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Illinois Compiled Statutes

Information maintained by the Legislative Reference Bureau
Updating the database of the Illinois Compiled Statutes (ILCS) is an ongoing process. Recent laws may not yet be included in the ILCS database, but they are found on this site as Public Acts soon after they become law. For information concerning the relationship between statutes and Public Acts, refer to the Guide.

Because the statute database is maintained primarily for legislative drafting purposes, statutory changes are sometimes included in the statute database before they take effect. If the source note at the end of a Section of the statutes includes a Public Act that has not yet taken effect, the version of the law that is currently in effect may have already been removed from the database and you should refer to that Public Act to see the changes made to the current law.

REVENUE
(35 ILCS 200/) Property Tax Code.

35 ILCS 200/Art. 9

 
    (35 ILCS 200/Art. 9 heading)
Article 9. General Valuation Procedures

35 ILCS 200/Art. 9 Div. 1

 
    (35 ILCS 200/Art. 9 Div. 1 heading)
Division 1. Office Operations

35 ILCS 200/9-5

    (35 ILCS 200/9-5)
    Sec. 9-5. Rules. Each county assessor, board of appeals, and board of review shall make and publish reasonable rules for the guidance of persons doing business with them and for the orderly dispatch of business.
    In counties with fewer than 3,000,000 inhabitants, these rules shall not require specific proof to be offered nor limit the nature of evidence which may be offered as a condition of filing an assessment complaint under Section 16-55.
    In counties with 3,000,000 or more inhabitants, the county assessor and board of appeals (ending the first Monday in December 1998 and the board of review beginning the first Monday in December 1998 and thereafter), jointly shall make and prescribe rules for the assessment of property and the preparation of the assessment books by the township assessors in their respective townships and for the return of those books to the county assessor.
(Source: P.A. 98-322, eff. 8-12-13.)

35 ILCS 200/9-10

    (35 ILCS 200/9-10)
    Sec. 9-10. Office hours. The offices of the chief county assessment officer shall be open all the year during business hours to hear or receive complaints or suggestions that property has not been properly assessed.
(Source: Laws 1939, p. 886; P.A. 88-455.)

35 ILCS 200/9-15

    (35 ILCS 200/9-15)
    Sec. 9-15. Annual meeting of supervisor of assessments. In all counties of township organization having a supervisor of assessments, the supervisor of assessments shall, by January 1 of each year, assemble all assessors and their deputies for consultation and shall instruct them in uniformity of their functions. The instructions shall be in writing and available to the public. Notice of the annual assembly shall be published not more than 30 nor less than 10 days before the assembly in a newspaper published in the township or the tax assessment district, and if there is no such newspaper, in a newspaper published in the county and in general circulation in the township or tax assessment district. At the time of publishing the notice, a press release giving notice of the assembly shall be given to each newspaper published in the county and to each commercial broadcasting station whose main office is located in the county. The assembly is open to the public.
    Any assessor or deputy assessor who wilfully refuses or neglects to observe or follow instructions of the supervisor of assessments, which are in accordance with law, shall be guilty of a Class B misdemeanor. Any supervisor of assessments who willfully gives directions which are not in accordance with law is guilty of a Class B misdemeanor.
(Source: P.A. 84-837; 88-455.)

35 ILCS 200/9-20

    (35 ILCS 200/9-20)
    Sec. 9-20. Property record cards. In all counties, all property record cards maintained by a township assessor, multi-township assessor, or chief county assessment officer shall be public records, and shall be available for public inspection during business hours, subject to reasonable rules and regulations of the custodian of the records. Upon request and payment of such reasonable fee established by the custodian, a copy or printout shall be provided to any person.
    Property record cards may be established and maintained on electronic equipment or microfiche, and that system may be the exclusive record of property information.
(Source: P.A. 83-1312; 88-455.)

35 ILCS 200/9-25

    (35 ILCS 200/9-25)
    Sec. 9-25. Township property record cards. In counties under township organization, the township assessors and multi-township assessors shall allow the supervisor of assessments to make a duplicate copy of any or all records compiled and maintained by the township assessor and multi-township assessor. The supervisor of assessments shall make and maintain a complete set of property record cards. The township or multi-township assessor shall supply the supervisor of assessments with a copy of all new property record cards as they are added to the tax rolls.
(Source: P.A. 84-837; 88-455.)

35 ILCS 200/9-30

    (35 ILCS 200/9-30)
    Sec. 9-30. Property records systems - Townships and multi-townships. The township or multi-township assessor may spend funds for the preparation, establishment and maintenance of a detailed property record system which would provide information useful to assessment officials. The assessor also may enter into contracts with persons, firms or corporations for the preparation and establishment of the record system. The property record system shall include up-to-date and complete tax maps, ownership lists, valuation standards and property record cards, including appraisals, for all or any part of the property in the township or multi-township assessment district in accordance with reasonable rules and procedures prescribed by the Department, but the system and records shall not be considered to be assessments nor limit the powers and duties of assessing officials. The record shall be available to all assessing officials and to the public.
(Source: P.A. 82-554; 88-455.)

35 ILCS 200/9-35

    (35 ILCS 200/9-35)
    Sec. 9-35. County tax maps - Supervisor of assessments. Except as provided in Section 5-1108 of the Counties Code, each supervisor of assessments shall prepare and maintain, in accordance with rules and procedures prescribed by the Department, tax maps and up-to-date lists of property owners' names and addresses and property record cards for all of the property in the county, and shall procure at regular intervals from the records maintained by the county recorder information relating to transfers of property. The supervisor of assessments shall not, however, duplicate the work of any full-time township assessor or multi-township assessor who maintains up-to-date and complete tax maps, ownership lists and property record cards in accordance with rules and procedures prescribed by the Department. This shall not preclude the maintenance of duplicate records in the supervisor of assessments' office. This Section shall not prohibit the preparation and setting up of a property record system (including appraisals) and property record cards as provided for in other Acts, but such system and records shall not be considered to be assessments nor limit the powers and duties of the assessors as provided by this Code. Systems and records or copies of them set up under other Acts may be maintained by the supervisor of assessments in his or her office. In preparing the original tax maps, lists and property record cards, he or she shall consult with the Department and the Department shall furnish to the officer such supplies and equipment as may, in its judgment, be necessary to set up the original set of maps, lists and records required by this Section.
(Source: P.A. 86-482; 86-1475; 88-455.)

35 ILCS 200/9-40

    (35 ILCS 200/9-40)
    Sec. 9-40. County tax maps; County assessor. In any county with less than 3,000,000 inhabitants which elects a county assessor under Section 3-45, the county assessor shall, except as provided in Section 5-1108 of the Counties Code, prepare and maintain tax maps, up-to-date lists of property owners' names and addresses, and property record cards for all of the property in the county. Those documents shall be prepared and maintained in accordance with rules and procedures prescribed by the Department. The county assessor also shall procure at regular intervals from the records maintained by the recorder information relating to transfers of property. The county assessor shall not duplicate the work of any fulltime township assessor who maintains up-to-date and complete tax maps, ownership lists and property record cards in accordance with rules and procedures prescribed by the Department, but this shall not preclude the maintenance of duplicate copies of those records in the county assessor's office. This Section does not prohibit the preparation and setting up of a property record system (including appraisals) and property record cards as provided for in other Acts, but the system and records shall not be considered to be assessments nor limit the powers and duties of the assessors under this Code. Systems and records or copies of them set up under such other Acts may be maintained by the county assessor in his or her office. In preparing the original tax maps, lists and property record cards, the county assessor shall consult with the Department. The Department shall furnish to that officer supplies and equipment as may, in its judgment, be necessary to set up the original set of maps, lists and records required by this Section.
(Source: P.A. 86-1475; 88-455.)

35 ILCS 200/9-45

    (35 ILCS 200/9-45)
    Sec. 9-45. Property index number system. The county clerk in counties of 3,000,000 or more inhabitants and, subject to the approval of the county board, the chief county assessment officer or recorder, in counties of less than 3,000,000 inhabitants, may establish a property index number system under which property may be listed for purposes of assessment, collection of taxes or automation of the office of the recorder. The system may be adopted in addition to, or instead of, the method of listing by legal description as provided in Section 9-40. The system shall describe property by township, section, block, and parcel or lot, and may cross-reference the street or post office address, if any, and street code number, if any. The county clerk, county treasurer, chief county assessment officer or recorder may establish and maintain cross indexes of numbers assigned under the system with the complete legal description of the properties to which the numbers relate. Index numbers shall be assigned by the county clerk in counties of 3,000,000 or more inhabitants, and, at the direction of the county board in counties with less than 3,000,000 inhabitants, shall be assigned by the chief county assessment officer or recorder. Tax maps of the county clerk, county treasurer or chief county assessment officer shall carry those numbers. The indexes shall be open to public inspection and be made available to the public. Any property index number system established prior to the effective date of this Code shall remain valid. However, in counties with less than 3,000,000 inhabitants, the system may be transferred to another authority upon the approval of the county board.
    Any real property used for a power generating or automotive manufacturing facility located within a county of less than 1,000,000 inhabitants, as to which litigation with respect to its assessed valuation is pending or was pending as of January 1, 1993, may be the subject of a real property tax assessment settlement agreement among the taxpayer and taxing districts in which it is situated. In addition, any real property that is (i) used for natural gas extraction and fractionation or olefin and polymer manufacturing and (ii) located within a county of less than 1,000,000 inhabitants may be the subject of a real property tax assessment settlement agreement among the taxpayer and taxing districts in which the property is situated if litigation is or was pending as to its assessed valuation as of January 1, 2003 or thereafter. Other appropriate authorities, which may include county and State boards or officials, may also be parties to such agreements. Such agreements may include the assessment of the facility or property for any years in dispute as well as for up to 10 years in the future. Such agreements may provide for the settlement of issues relating to the assessed value of the facility and may provide for related payments, refunds, claims, credits against taxes and liabilities in respect to past and future taxes of taxing districts, including any fund created under Section 20-35 of this Act, all implementing the settlement agreement. Any such agreement may provide that parties thereto agree not to challenge assessments as provided in the agreement. An agreement entered into on or after January 1, 1993 may provide for the classification of property that is the subject of the agreement as real or personal during the term of the agreement and thereafter. It may also provide that taxing districts agree to reimburse the taxpayer for amounts paid by the taxpayer in respect to taxes for the real property which is the subject of the agreement to the extent levied by those respective districts, over and above amounts which would be due if the facility were to be assessed as provided in the agreement. Such reimbursement may be provided in the agreement to be made by credit against taxes of the taxpayer. No credits shall be applied against taxes levied with respect to debt service or lease payments of a taxing district. No referendum approval or appropriation shall be required for such an agreement or such credits and any such obligation shall not constitute indebtedness of the taxing district for purposes of any statutory limitation. The county collector shall treat credited amounts as if they had been received by the collector as taxes paid by the taxpayer and as if remitted to the district. A county treasurer who is a party to such an agreement may agree to hold amounts paid in escrow as provided in the agreement for possible use for paying taxes until conditions of the agreement are met and then to apply these amounts as provided in the agreement. No such settlement agreement shall be effective unless it shall have been approved by the court in which such litigation is pending. Any such agreement which has been entered into prior to adoption of this amendatory Act of 1988 and which is contingent upon enactment of authorizing legislation shall be binding and enforceable.
(Source: P.A. 96-609, eff. 8-24-09.)

35 ILCS 200/9-50

    (35 ILCS 200/9-50)
    Sec. 9-50. Maps and plats. The chief county assessment officer may make or purchase maps and plats that will facilitate the business of his or her office. The maps and plats shall always remain in the office, and will be open and accessible to the public.
(Source: Laws 1939, p. 886; P.A. 88-455.)

35 ILCS 200/9-55

    (35 ILCS 200/9-55)
    Sec. 9-55. Survey by owner. When a property is divided into parcels so that it cannot be described without describing it by metes and bounds, it is the duty of the owner to have the land surveyed and platted into lots. The platting shall be in accord with the Plat Act. The plat shall be certified and recorded. Any unit of local government responsible for issuing building permits may require, by ordinance, that the plat be certified and recorded before the building permit is issued, unless a subdivision plat is not required under subsection (b) of Section 1 of the Plat Act. The description of property, in accordance with the number and description in the plat, shall be a valid description of the property described. However, no plat of a subdivision, vacation or dedication of a tract of land shall be approved by a city, incorporated town or village officer, nor shall any recorder record a plat, unless a statement from the county clerk is endorsed thereon showing that he or she finds no delinquent general taxes, unpaid current general taxes, delinquent special assessments or unpaid current special assessments against the tract of land. No officer of a city, village or incorporated town shall approve the plat of a subdivision of a tract of land until all deferred installments of outstanding unpaid special assessments are either certified as paid by the proper collector, or a division thereof is made in accord with the proposed subdivision and duly approved by the court that confirmed the special assessment.
(Source: P.A. 90-788, eff. 8-14-98.)

35 ILCS 200/9-60

    (35 ILCS 200/9-60)
    Sec. 9-60. (Repealed).
(Source: P.A. 88-455. Repealed by P.A. 95-925, eff. 1-1-09.)

35 ILCS 200/9-65

    (35 ILCS 200/9-65)
    Sec. 9-65. Reassessment after platting. Except as otherwise provided by Section 10-30 with respect to assessments made in counties with less than 3,000,000 inhabitants, whenever acreage property has been subdivided into lots and the subdivision has been recorded, the lots shall be reassessed and placed upon the assessor's books, replacing the acreage property, as of the first day of January immediately following the date of the recording or filing of the subdivision.
(Source: P.A. 83-358; 83-837; 83-1362; 88-455.)

35 ILCS 200/Art. 9 Div. 2

 
    (35 ILCS 200/Art. 9 Div. 2 heading)
Division 2. Assessment authority

35 ILCS 200/9-70

    (35 ILCS 200/9-70)
    Sec. 9-70. Assessment authority. The Department shall assess all pollution control facilities, low sulfur dioxide emission coal fueled devices, and property owned or used by railroad companies operating within this State, except noncarrier real estate. Local assessment officers shall assess all other property not exempted from taxation.
(Source: P.A. 81-838; 88-455.)

35 ILCS 200/9-75

    (35 ILCS 200/9-75)
    Sec. 9-75. Revisions of assessments; Counties of less than 3,000,000. The chief county assessment officer of any county with less than 3,000,000 inhabitants, or the township or multi-township assessor of any township in that county, may in any year revise and correct an assessment as appears to be just. Notice of the revision shall be given in the manner provided in Section 12-10 and 12-30 to the taxpayer whose assessment has been changed.
(Source: P.A. 81-838; 88-455.)

35 ILCS 200/9-80

    (35 ILCS 200/9-80)
    Sec. 9-80. Authority to revise assessments; Counties of less than 3,000,000. The chief county assessment officer in counties with less than 3,000,000 inhabitants shall have the same authority as the township or multi-township assessor to assess and to make changes or alterations in the assessment of property, and shall assess and make such changes or alterations in the assessment of property as though originally made. Changes by the chief county assessment officer in valuations shall be noted in a column provided, and no change shall be made in the original assessor's figures.
    When the chief county assessment officer or his or her deputy views property for the purposes of assessing the property or determining whether a change or alteration in the assessment of the property is required, he or she shall give notice to the township assessor by U.S. Mail at least 5 days but not more than 30 days prior to the viewing, so that the assessor may arrange to be present at the viewing, except if the township or multi-township assessor fails to timely return the assessment books or workbooks as required by Section 9-230. He or she shall also give notice to owners of the properties by means of notices in a paper of general circulation in the township. The notices shall state the chief county assessment officer's intention to view the property but need not specify the date and time of the viewing. When the chief county assessment officer or his or her deputy is present at the property to be viewed, immediately prior to the viewing, he or she shall make a reasonable effort to ascertain if the owner or his or her representative, or the assessor, are on the premises and to inform them of his or her intention to view the property. Failure to provide notice to the township assessor and owner shall not of and by itself invalidate any change in an assessment. A viewing under this Section and Section 9-155 means actual viewing of the visible property in its entirety from, on or at the site of the property.
    All changes and alterations in the assessment of property shall be subject to revision by the board of review in the same manner that original assessments are reviewed.
(Source: P.A. 96-486, eff. 8-14-09.)

35 ILCS 200/9-85

    (35 ILCS 200/9-85)
    Sec. 9-85. Revision of assessments by county assessor and board of review; Counties of 3,000,000 or more. In counties with 3,000,000 or more inhabitants, the county assessor shall have authority annually to revise the assessment books and correct them as appears to be just; and on complaint in writing in proper form by any taxpayer, and after affording the taxpayer an opportunity to be heard thereon, he or she shall do so at any time, until the assessment is verified. An entry upon the assessment books does not constitute an assessment until the assessment is verified. When a notice is to be mailed under Section 12-55 and the address that appears on the assessor's records is the address of a mortgage lender or the trustee, where title to the property is held in a land trust, or in any event whenever the notice is mailed by the assessor to a taxpayer at or in care of the address of a mortgage lender or a trustee where the title to the property is held in a land trust, the mortgage lender or the trustee within 15 days of the mortgage lender's or the trustee's receipt of such notice shall mail a copy of the notice to each mortgagor of the property referred to in the notice at the last known address of each mortgagor as shown on the records of the mortgage lender, or to each beneficiary as shown on the records of the trustee.
    All changes and alterations pursuant to Section 16-95 or Section 16-120 in the assessment of property shall be subject to revision and entry into the assessment books by the board of appeals (until the first Monday in December 1998 and the board of review beginning the first Monday in December 1998 and thereafter) in the same manner as the original assessments.
(Source: P.A. 88-455; 89-126, eff. 7-11-95; 89-671, eff. 8-14-96.)

35 ILCS 200/Art. 9 Div. 3

 
    (35 ILCS 200/Art. 9 Div. 3 heading)
Division 3. Assessment books.

35 ILCS 200/9-90

    (35 ILCS 200/9-90)
    Sec. 9-90. Procuring assessment books. The county clerk shall procure all necessary books and blanks required by this Code to be used in the assessment of property and collection of taxes, at the expense of the county.
(Source: Laws 1939, p. 886; P.A. 88-455.)

35 ILCS 200/9-95

    (35 ILCS 200/9-95)
    Sec. 9-95. Listing of property. All property subject to taxation under this Code, including property becoming taxable for the first time, shall be listed by the proper legal description in the name of the owner, and assessed at the times and in the manner provided in Sections 9-215 through 9-225, and also in any year that the Department orders a reassessment (to the extent the reassessment is so ordered), with reference to the amount owned on January 1 in the year for which it is assessed, including all property purchased that day. The assessment, as modified or equalized or changed as provided by law, shall be the assessment upon which taxes shall be levied and extended during the general assessment period for which the assessment is made, or during the remainder of that general assessment period for any property reassessed by order of the Department. No assessment shall be considered illegal by reason of not having been listed or assessed in the name of the owner or owners.
(Source: P.A. 85-1221; 86-1481; 88-455.)

35 ILCS 200/9-100

    (35 ILCS 200/9-100)
    Sec. 9-100. Assessment list; Delivery of books. Before January 1 in each year of the general assessment, as provided in Sections 9-215 through 9-225, each county clerk shall make up the list of property to be assessed for taxes for the townships or taxing districts in the county, in books for that purpose. Annually, before January 1, he or she shall make up lists of properties which are taxable, or which become taxable for the first time, and which are not already listed, and make up lists of properties which have been subdivided and not listed by the proper description. The county clerk shall enter in the proper column, opposite the respective parcels, the name of the owner, or other such persons, so far as he is able to ascertain the names. The lists shall contain columns to show the number of acres or lots improved, and the assessed value; the assessed value of improvements; the total value; and other information as may be required. The county clerk shall also have prepared and ready for delivery all blanks necessary in the assessment of property, and shall deliver those blanks to the assessors along with the assessment books or lists. The books or lists may be completed and delivered by townships or taxing districts without waiting for the completion of all the books or lists, but all assessment books or lists shall be delivered by the county clerk to the chief county assessment officer on or before January 1. The books or lists shall be made in duplicate.
(Source: P.A. 86-1481; 88-455.)

35 ILCS 200/9-105

    (35 ILCS 200/9-105)
    Sec. 9-105. Makeup of assessment books by townships. The books for the assessment of property, in counties not under township organization, shall be made up by congressional townships, but parts or fractional townships may be added to full townships, at the discretion of the county board. In counties under township organization, the books shall be made to correspond with the organized townships. Separate books shall be made for the assessment of property and the collection of all taxes and special assessments thereon, within the corporate limits of cities, incorporated towns and villages, if ordered by the county board.
(Source: Laws 1939, p. 886; P.A. 88-455.)

35 ILCS 200/9-110

    (35 ILCS 200/9-110)
    Sec. 9-110. Railroad assessment book. The county clerk shall procure, at the expense of the county, a record book in a form prescribed by the Department, in which to enter railroad property as listed for taxation, and shall enter the valuations assessed, corrected and equalized in the manner provided by law. The county clerk shall extend all the taxes for which the property is liable against its equalized assessed value. At the time fixed by law for delivering tax books to the county collector, the clerk shall attach a warrant, under his or her seal of office, and deliver the book to the county collector. The county collector shall collect the taxes charged against railroad property, and pay over and account for the taxes in the manner provided in other cases. The book shall be returned by the collector and filed in the office of the county clerk. The taxes on all railroad property shall be extended as on other property, and shall be subject to the same penalties, dates of payment and methods of enforcement as other property taxes.
(Source: Laws 1945, p. 1212; P.A. 88-455.)

35 ILCS 200/9-115

    (35 ILCS 200/9-115)
    Sec. 9-115. Parcels in more than one taxing district. When any property is situated in more than one township or taxing district, or is situated and assessed in any drainage district, for drainage purposes, the portion in each township or taxing district shall be listed separately. The lands in any drainage district shall be listed so as to correspond, as nearly as possible, to the respective subdivisions and descriptions in the latest assessment roll of the drainage district.
(Source: Laws 1939, p. 886; P.A. 88-455.)

35 ILCS 200/9-120

    (35 ILCS 200/9-120)
    Sec. 9-120. Combined listings. When a whole section, half section, quarter section, or half-quarter section of property, belongs to the same owner, it may, and shall, at the request of the owner or his or her agent, be listed as one tract, and when all lots in the same block belong to the same owner they may, and shall, at the request of the owner or his or her agent, be listed as a block. When several adjoining lots in the same block belong to the same owner, they may, and shall, at the request of the owner or his or her agent, be included in one description. However, this Section shall not apply to property on which delinquent or forfeited taxes are outstanding.
(Source: Laws 1939, p. 886; P.A. 88-455.)

35 ILCS 200/9-125

    (35 ILCS 200/9-125)
    Sec. 9-125. Verification of assessment lists. The county clerk shall compare the lists of property with the list of taxable property on file in his or her office.
(Source: Laws 1939, p. 886; P.A. 88-455.)

35 ILCS 200/9-130

    (35 ILCS 200/9-130)
    Sec. 9-130. Delivery of assessment books. The chief county assessment officer shall call upon the county clerk on or before the first day of January in each year and receive the assessment books and blanks as prepared by the county clerk for the assessment of property for that year.
(Source: P.A. 86-678; 88-455.)

35 ILCS 200/9-135

    (35 ILCS 200/9-135)
    Sec. 9-135. Correction of assessment lists. If the assessor or chief county assessment officer finds that any property subject to taxation, or special assessment, has not been returned to him or her by the clerk, or has not been described in the subdivisions or manner required by this Code, he or she shall correct the return of the clerk, and shall list and assess the property in the manner required by law.
    The assessor or chief county assessment officer shall, also, from time to time, make alterations in the description of property as he or she may find necessary. When property has been subdivided since the making of the general assessment, the assessor or chief county assessment officer shall from time to time correct the descriptions so that they correspond to the subdivision, and distribute the assessment in the proper proportions among the parcels into which the land has been subdivided; and in case of a vacation of a subdivision readjust the description of the assessment accordingly.
(Source: Laws 1939, p. 886; P.A. 88-455.)

35 ILCS 200/9-140

    (35 ILCS 200/9-140)
    Sec. 9-140. Loss or destruction of assessment books. When all or any part of the assessment rolls or collectors' books of any county, or other taxing district are lost or destroyed by any means whatever, a new assessment, or new books, as the case may require, shall be made under the direction of the county board. The board shall, in those cases, fix reasonable times and dates for performing the work of assessment, equalization, levy, extension and collection of taxes, and paying over the same, or making new books, as the circumstances of the case may require. All provisions of this Code apply to the dates fixed by the county board, in the same manner that they apply to the dates for similar purposes, as fixed by this Code. The presiding officer of the county board may select and appoint persons, with the advice and consent of the county board, when he or she finds it necessary, to carry out provisions of this section.
(Source: P.A. 78-1128; 88-455.)

35 ILCS 200/Art. 9 Div. 4

 
    (35 ILCS 200/Art. 9 Div. 4 heading)
Division 4. Valuation procedures

35 ILCS 200/9-145

    (35 ILCS 200/9-145)
    Sec. 9-145. Statutory level of assessment. Except in counties with more than 200,000 inhabitants which classify property for purposes of taxation, property shall be valued as follows:
        (a) Each tract or lot of property shall be valued at
    
33 1/3% of its fair cash value.
        (b) Each taxable leasehold estate shall be valued at
    
33 1/3% of its fair cash value.
        (c) Each building or structure which is located on
    
the right of way of any canal, railroad or other company leased or granted to another company or person for a term of years, shall be valued at 33 1/3% of its fair cash value.
        (d) Any property on which there is a coal or other
    
mine, or stone or other quarry, shall be valued at 33 1/3% of its fair cash value. Oil, gas and other minerals, except coal, shall have value and be assessed separately at 33 1/3% of the fair cash value of such oil, gas and other minerals. Coal shall be assessed separately at 33 1/3% of the coal reserve economic value, as provided in Sections 10-170 through 10-200.
        (e) In the assessment of property encumbered by
    
public easement, any depreciation occasioned by such easement shall be deducted in the valuation of such property. Any property dedicated as a nature preserve or as a nature preserve buffer under the Illinois Natural Areas Preservation Act, for the purposes of this paragraph, is encumbered by a public easement and shall be depreciated for assessment purposes to a level at which its valuation shall be $1 per acre or portion thereof.
    This Section is subject to and modified by Sections 10-110 through 10-140 and 11-5 through 11-65.
(Source: P.A. 91-497, eff. 1-1-00.)

35 ILCS 200/9-150

    (35 ILCS 200/9-150)
    Sec. 9-150. Classification of property. Where property is classified for purposes of taxation in accordance with Section 4 of Article IX of the Constitution and with such other limitations as may be prescribed by law, the classification must be established by ordinance of the county board. If not so established, the classification is void.
(Source: P.A. 78-700; 88-455.)

35 ILCS 200/9-155

    (35 ILCS 200/9-155)
    Sec. 9-155. Valuation in general assessment years. On or before June 1 in each general assessment year in all counties with less than 3,000,000 inhabitants, and as soon as he or she reasonably can in each general assessment year in counties with 3,000,000 or more inhabitants, or if any such county is divided into assessment districts as provided in Sections 9-215 through 9-225, as soon as he or she reasonably can in each general assessment year in those districts, the assessor, in person or by deputy, shall actually view and determine as near as practicable the value of each property listed for taxation as of January 1 of that year, or as provided in Section 9-180, and assess the property at 33 1/3% of its fair cash value, or in accordance with Sections 10-110 through 10-140 and 10-170 through 10-200, or in accordance with a county ordinance adopted under Section 4 of Article IX of the Constitution of Illinois. The assessor or deputy shall set down, in the books furnished for that purpose the assessed valuation of properties in one column, the assessed value of improvements in another, and the total valuation in a separate column.
(Source: P.A. 86-1481; 87-1189; 88-455.)

35 ILCS 200/9-160

    (35 ILCS 200/9-160)
    Sec. 9-160. Valuation in years other than general assessment years. On or before June 1 in each year other than the general assessment year, in all counties with less than 3,000,000 inhabitants, and as soon as he or she reasonably can in counties with 3,000,000 or more inhabitants, the assessor shall list and assess all property which becomes taxable and which is not upon the general assessment, and also make and return a list of all new or added buildings, structures or other improvements of any kind, the value of which had not been previously added to or included in the valuation of the property on which such improvements have been made, specifying the property on which each of the improvements has been made, the kind of improvement and the value which, in his or her opinion, has been added to the property by the improvements. The assessment shall also include or exclude, on a proportionate basis in accordance with the provisions of Section 9-180, all new or added buildings, structures or other improvements, the value of which was not included in the valuation of the property for that year, and all improvements which were destroyed or removed. In case of the destruction or injury by fire, flood, cyclone, storm or otherwise, or removal of any structures of any kind, or of the destruction of or any injury to orchard timber, ornamental trees or groves, the value of which has been included in any former valuation of the property, the assessor shall determine as near as practicable how much the value of the property has been diminished, and make return thereof.
    Beginning January 1, 1996, the authority within a unit of local government that is responsible for issuing building or occupancy permits shall notify the chief county assessment officer, by December 31 of the assessment year, when a full or partial occupancy permit has been issued for a parcel of real property. The chief county assessment officer shall include in the assessment of the property for the current year the proportionate value of new or added improvements on that property from the date the occupancy permit was issued or from the date the new or added improvement was inhabitable and fit for occupancy or for intended customary use until December 31 of that year. If the chief county assessment officer has already certified the books for the year, the board of review or interim board of review shall assess the new or added improvements on a proportionate basis for the year in which the occupancy permit was issued or the new or added improvement was inhabitable and fit for occupancy or for intended customary use. The proportionate value of the new or added improvements may be assessed by the board of review or interim board of review as omitted property pursuant to Sections 9-265, 9-270, 16-50 and 16-140 in a subsequent year on a proportionate basis for the year in which the occupancy permit was issued or the new or added improvement was inhabitable and fit for occupancy or for intended customary use if it was not assessed in that year.
(Source: P.A. 91-486, eff. 1-1-00.)

35 ILCS 200/9-165

    (35 ILCS 200/9-165)
    Sec. 9-165. Definitions. As used in Sections 9-160 and 9-180:
    "Municipality" means a city, village or incorporated town.
    "Governing body" means (a) the corporate authorities of a municipality with respect to territory within its corporate limits and (b) the county board with respect to territory in the county not within the corporate limits of any municipality.
    "Occupancy permit" means the certificate or permit, by whatever name denominated, which a municipality or county, under its authority to regulate the construction of buildings, issues as evidence that all applicable requirements have been complied with and requires before any new, reconstructed or remodeled building may be lawfully occupied.
(Source: P.A. 91-357, eff. 7-29-99; 91-486, eff. 1-1-00.)

35 ILCS 200/9-170

    (35 ILCS 200/9-170)
    Sec. 9-170. (Repealed).
(Source: P.A. 88-455. Repealed by 89-412, eff. 11-17-95.)

35 ILCS 200/9-175

    (35 ILCS 200/9-175)
    Sec. 9-175. Owner on assessment date. The owner of property on January 1 in any year shall be liable for the taxes of that year, except that when coal has been separated from the land by deed or lease, the owner or lessee of the coal shall be liable for the taxes on the coal in the year of first production and each year thereafter until production ceases. Subject to the provisions of Section 20-210 for payment of current taxes on a specified part or undivided share of property, in all cases of property having more than one owner as of January 1 of any year, each owner is liable jointly and severally in any action under Section 21-440 for all taxes of that year.
(Source: P.A. 86-949; 87-818; 88-455.)

35 ILCS 200/9-180

    (35 ILCS 200/9-180)
    Sec. 9-180. Pro-rata valuations; improvements or removal of improvements. The owner of property on January 1 also shall be liable, on a proportionate basis, for the increased taxes occasioned by the construction of new or added buildings, structures or other improvements on the property from the date when the occupancy permit was issued or from the date the new or added improvement was inhabitable and fit for occupancy or for intended customary use to December 31 of that year. The owner of the improved property shall notify the assessor, within 30 days of the issuance of an occupancy permit or within 30 days of completion of the improvements, on a form prescribed by that official, and request that the property be reassessed. The notice shall be sent by certified mail, return receipt requested and shall include the legal description of the property.
    When, during the previous calendar year, any buildings, structures or other improvements on the property were destroyed and rendered uninhabitable or otherwise unfit for occupancy or for customary use by accidental means (excluding destruction resulting from the willful misconduct of the owner of such property), the owner of the property on January 1 shall be entitled, on a proportionate basis, to a diminution of assessed valuation for such period during which the improvements were uninhabitable or unfit for occupancy or for customary use. The owner of property entitled to a diminution of assessed valuation shall, on a form prescribed by the assessor, within 90 days after the destruction of any improvements or, in counties with less than 3,000,000 inhabitants within 90 days after the township or multi-township assessor has mailed the application form as required by Section 9-190, file with the assessor for the decrease of assessed valuation. Upon failure so to do within the 90 day period, no diminution of assessed valuation shall be attributable to the property.
    Computations under this Section shall be on the basis of a year of 365 days.
(Source: P.A. 91-486, eff. 1-1-00.)

35 ILCS 200/9-185

    (35 ILCS 200/9-185)
    Sec. 9-185. Change in use or ownership. The purchaser of property on January 1 shall be considered as the owner on that day. However, when a fee simple title or lesser interest in property is purchased, granted, taken or otherwise transferred for a use exempt from taxation under this Code, that property shall be exempt from taxes from the date of the right of possession, except that property acquired by condemnation is exempt as of the date the condemnation petition is filed. Whenever a fee simple title or lesser interest in property is purchased, granted, taken or otherwise transferred from a use exempt from taxation under this Code to a use not so exempt, that property shall be subject to taxation from the date of purchase or conveyance. It shall be the obligation of the titleholder of record in such cases where there is a change in use or a change in a leasehold estate or, in cases where there has been a purchase, grant, taking or transfer, it is the obligation of the transferee to notify the chief county assessment officer within 30 days of that action. Failure to give the notification, resulting in the assessing official continuing to list the property as exempt in subsequent years, shall cause the property to be considered omitted property for the purpose of this Code. In those cases the county collector is authorized to issue a tax bill to the person holding title to the property in that part of the year during which it was not exempt from taxation for that part of the year and to accept payment of the bill as full and final settlement of tax liability for the year involved.
(Source: P.A. 86-949; 87-818; 88-455.)

35 ILCS 200/9-190

    (35 ILCS 200/9-190)
    Sec. 9-190. Damaged or destroyed property.
    (a) When a property in a county with less than 3,000,000 inhabitants has been destroyed or rendered uninhabitable or otherwise unfit for occupancy or customary use by natural disaster or accidental means, the township assessor shall send to the owner by certified mail an application form for reduction of the assessed valuation of that property as provided in Section 9-180.
    (b) Whenever an official, employee, or other representative of a municipal fire department, fire protection district, volunteer fire protection association, or emergency services and disaster agency of a political subdivision of this State is required by law to make an official report to another government official or agency concerning a natural disaster or accident that is likely to cause real property to have a diminished assessed valuation, that official, employee, or representative shall make a copy of the report available to the property owner on the owner's request and shall insure that the report contains the following notice:
NOTICE TO PROPERTY OWNER
        If your property has been damaged you may be eligible
    
for a decrease in the assessed valuation of your property, which could result in lower property taxes. Contact your local assessor for more information.
    (c) Regardless of whether an official report concerning the natural disaster or accident is issued under subsection (b), the property owner may notify the township assessor of the property's destruction, uninhabitability, or unfitness for occupancy or normal use.
(Source: P.A. 87-818; 88-455; incorporates 88-221; 88-670, eff. 12-2-94.)

35 ILCS 200/9-195

    (35 ILCS 200/9-195)
    (Text of Section WITH the changes made by P.A. 97-1161, which has been held unconstitutional)
    Sec. 9-195. Leasing of exempt property.
    (a) Except as provided in Sections 15-35, 15-55, 15-60, 15-100, 15-103, 15-160, and 15-185, when property which is exempt from taxation is leased to another whose property is not exempt, and the leasing of which does not make the property taxable, the leasehold estate and the appurtenances shall be listed as the property of the lessee thereof, or his or her assignee. Taxes on that property shall be collected in the same manner as on property that is not exempt, and the lessee shall be liable for those taxes. However, no tax lien shall attach to the exempt real estate. The changes made by Public Act 90-562 and by Public Act 91-513 are declaratory of existing law and shall not be construed as a new enactment. The changes made by Public Acts 88-221 and 88-420 that are incorporated into this Section by Public Act 88-670 are declarative of existing law and are not a new enactment.
    (b) The provisions of this Section regarding taxation of leasehold interests in exempt property do not apply to any leasehold interest created pursuant to any transaction described in subsection (e) of Section 15-35, subsection (c-5) of Section 15-60, subsection (b) of Section 15-100, Section 15-103, Section 15-160, or Section 15-185 of this Code or Section 6c of the Downstate Forest Preserve District Act.
(Source: P.A. 99-219, eff. 7-31-15; 99-642, eff. 7-28-16.)
 
    (Text of Section WITHOUT the changes made by P.A. 97-1161, which has been held unconstitutional)
    Sec. 9-195. Leasing of exempt property.
    (a) Except as provided in Sections 15-35, 15-55, 15-60, 15-100, 15-103, and 15-185, when property which is exempt from taxation is leased to another whose property is not exempt, and the leasing of which does not make the property taxable, the leasehold estate and the appurtenances shall be listed as the property of the lessee thereof, or his or her assignee. Taxes on that property shall be collected in the same manner as on property that is not exempt, and the lessee shall be liable for those taxes. However, no tax lien shall attach to the exempt real estate. The changes made by Public Act 90-562 and by Public Act 91-513 are declaratory of existing law and shall not be construed as a new enactment. The changes made by Public Acts 88-221 and 88-420 that are incorporated into this Section by Public Act 88-670 are declarative of existing law and are not a new enactment.
    (b) The provisions of this Section regarding taxation of leasehold interests in exempt property do not apply to any leasehold interest created pursuant to any transaction described in subsection (e) of Section 15-35, subsection (c-5) of Section 15-60, subsection (b) of Section 15-100, Section 15-103, or Section 15-185 of this Code or Section 6c of the Downstate Forest Preserve District Act.
(Source: P.A. 99-219, eff. 7-31-15; 99-642, eff. 7-28-16.)

35 ILCS 200/9-200

    (35 ILCS 200/9-200)
    Sec. 9-200. Previously exempt property. Property that is purchased, granted, taken or otherwise transferred from a use exempt from taxation under this Code to a use not so exempt shall be subject to taxation from the date of change of use, purchase or conveyance. In those cases the county collector may issue a tax bill to the person holding title to the property for that part of the year during which it was not exempt, and may accept payment of the bill as full and final settlement of tax liability for that year.
(Source: P.A. 86-1481; 88-455.)

35 ILCS 200/9-205

    (35 ILCS 200/9-205)
    Sec. 9-205. Equalization. When deemed necessary to equalize assessments between or within townships or between classes of property, or when deemed necessary to raise or lower assessments within a county or any part thereof to the level prescribed by law, changes in individual assessments may be made by a township assessor or chief county assessment officer, under Section 9-75, by application of a percentage increase or decrease to each assessment.
(Source: P.A. 81-1034; 88-455.)

35 ILCS 200/9-210

    (35 ILCS 200/9-210)
    Sec. 9-210. Equalization by chief county assessment officer; counties of less than 3,000,000. The chief county assessment officer in a county with less than 3,000,000 inhabitants shall act as an equalizing authority for each county in which he or she serves. The officer shall examine the assessments in the county and shall equalize the assessments by increasing or reducing the entire assessment of property in the county or any area therein or of any class of property, so that the assessments will be at 33 1/3% of fair cash value. The equalization process and analysis described in this Section shall apply to all property except farm and coal properties assessed under Sections 10-110 through 10-140 and 10-170 through 10-200.
    For each township or assessment district in the county, the supervisor of assessments shall annually determine the percentage relationship between the estimated 33 1/3% of the fair cash value of the property and the assessed valuations at which the property is listed for each township, multi-township or assessment district. To make this analysis, he or she shall use property transfers, property appraisals, and other means as he or she deems proper and reasonable.
    With the ratio determined for each township or assessment district, the supervisor of assessments shall then determine the percentage to be added to or deducted from the aggregate assessments in each township or assessment district, other than property assessed under Sections 10-110 through 10-140 and 10-170 through 10-200, in order to produce a ratio of assessed value to fair cash value of 33 1/3%. That percentage shall be issued as an equalization factor for each township or assessment district within each county served by the chief county assessment officer. The assessment officer shall then change the assessment of each parcel of property by application of the equalization factor.
(Source: P.A. 88-455; 88-670, eff. 12-2-94.)

35 ILCS 200/9-213

    (35 ILCS 200/9-213)
    Sec. 9-213. Explanation of equalization factors. The chief county assessment officer in every county with less than 3,000,000 inhabitants must provide a plain-English explanation of all township, county, and State equalization factors, including the rationale and methods used to determine the equalizations. If a county Internet website exists, this explanation must be published thereon, otherwise it must be available to the public upon request at the office of the chief county assessment officer.
(Source: P.A. 96-122, eff. 1-1-10.)

35 ILCS 200/9-215

    (35 ILCS 200/9-215)
    Sec. 9-215. General assessment years; counties of less than 3,000,000. Except as provided in Sections 9-220 and 9-225, in counties having the township form of government and with less than 3,000,000 inhabitants, the general assessment years shall be 1995 and every fourth year thereafter. In counties having the commission form of government and less than 3,000,000 inhabitants, the general assessment years shall be 1994 and every fourth year thereafter.
(Source: P.A. 86-1481; 87-1189; 88-455.)

35 ILCS 200/9-220

    (35 ILCS 200/9-220)
    Sec. 9-220. Division into assessment districts; assessment years; counties of 3,000,000 or more.
    (a) Notwithstanding any other provision in this Code to the contrary, until January 1, 1996, the county board of a county with 3,000,000 or more inhabitants may by resolution divide the county into any number of assessment districts. If the county is organized into townships, the assessment districts shall follow township lines. The assessment districts shall divide, as near as practicable, the work of assessing the property in the county into equal parts but neither the area nor the number of parcels need be equal in the assessment districts. The resolution shall number the assessment districts and provide for a general reassessment of each district at regular intervals determined by the county board.
    (b) Beginning January 1, 1996, in counties with 3,000,000 or more inhabitants, assessment districts shall be subject to general reassessment according to the following schedule:
        (1) The first assessment district shall be subject to
    
general reassessment in 1997 and every 3 years thereafter.
        (2) The second assessment district shall be subject
    
to general reassessment in 1998 and every 3 years thereafter.
        (3) The third assessment district shall be subject to
    
general reassessment in 1996 and every 3 years thereafter.
    The boundaries of the 3 assessment districts are as follows: (i) the first assessment district shall be that portion of the county located within the boundaries of a municipality with 1,000,000 or more inhabitants, (ii) the second assessment district shall be that portion of the county that lies north of State Route 64 (North Avenue) and outside the boundaries of a municipality with 1,000,000 or more inhabitants, and (iii) the third assessment district shall be that portion of the county that lies south of State Route 64 (North Avenue) and outside the boundaries of a municipality with 1,000,000 or more inhabitants.
(Source: P.A. 88-455; 89-126, eff. 7-11-95.)

35 ILCS 200/9-225

    (35 ILCS 200/9-225)
    Sec. 9-225. Division of county into four assessment districts. Resolutions of any county board dividing the county into four assessment districts, if adopted before January 1, 1990, shall remain valid thereafter unless and until repealed by the county board.
    The county board of any county may, by resolution adopted after January 1, 1992, divide the county into 4 assessment districts. The county clerk shall forward a copy of the resolution to the Department. The assessment districts shall follow township lines if the county is organized into townships, and shall divide, as near as may be, the work of assessing the property in the county into 4 equal parts. Neither the area nor the number of parcels of property need be equal in the 4 assessment districts. The resolution shall number the assessment districts 1 to 4 inclusive. The general assessment years for assessment district number 1 shall be 1992 and every fourth year thereafter; for assessment district number 2, the general assessment years shall be 1993 and every fourth year thereafter; for assessment district number 3, the general assessment years shall be 1994 and every fourth year thereafter; and for assessment district number 4, the general assessment years shall be 1995 and every fourth year thereafter. However, the general assessments shall not include property constituting a farm which is assessed under Sections 10-110 through 10-140. The county board of any county divided into assessment districts under this paragraph may provide by resolution for the assessment of the entire county in the general assessment year provided by law for that county and for the dissolution of the assessment district after the first such assessment.
(Source: P.A. 86-1481; 87-1189; 88-455.)

35 ILCS 200/9-230

    (35 ILCS 200/9-230)
    Sec. 9-230. Return of township or multi-township assessment books.
    (a) The township or multi-township assessors in counties with less than 600,000 inhabitants, based on the 2000 federal decennial census, shall, on or before June 15 of the assessment year, return the assessment books or workbooks to the supervisor of assessments. The township or multi-township assessors in counties with 600,000 or more but no more than 700,000 inhabitants, based on the 2000 federal decennial census, shall, on or before July 15 of the assessment year, return the assessment books or workbooks to the supervisor of assessments. The township or multi-township assessors in counties with less than 3,000,000 inhabitants, but more than 700,000 inhabitants, based on the 2000 federal decennial census, shall, on or before November 15 of the assessment year, return the assessment books or workbooks to the supervisor of assessments. If a township or multi-township assessor in a county with less than 3,000,000 inhabitants, based on the 2000 federal decennial census, does not return the assessment books or work books within the required time, the supervisor of assessments may take possession of the books and complete the assessments pursuant to law. Each of the books shall be verified by affidavit by the assessor substantially as follows:
State of Illinois)
                 )ss.
County of .......)
 
    I do solemnly swear that the book or books .... in number, to which this affidavit is attached, contains a complete list of all of the property in the township or multi-township or assessment district herein described subject to taxation for the year .... so far as I have been able to ascertain, and that the assessed value set down in the proper column opposite the descriptions of property is a just and equal assessment of the property according to law.
    Dated ...............
    (b) If the supervisor of assessments determines that the township or multi-township assessor has not completed the assessments as required by law before returning the assessment books under this Section, the county board may submit a bill to the township board of trustees for the reasonable costs incurred by the supervisor of assessments in completing the assessments. The moneys collected under this subsection may be used by the supervisor of assessments only for the purpose of recouping costs incurred in completing the assessments.
(Source: P.A. 96-486, eff. 8-14-09; 97-797, eff. 1-1-13.)

35 ILCS 200/9-235

    (35 ILCS 200/9-235)
    Sec. 9-235. Failure to complete assessments. If the board of review, in any county under township organization with less than 3,000,000 inhabitants, fails to complete its work for the assessment year by the next January 1, the supervisor of assessments shall issue work books to the township assessors until the board of review completes its work.
(Source: P.A. 85-1253; 88-455.)

35 ILCS 200/9-240

    (35 ILCS 200/9-240)
    Sec. 9-240. Assessment book totals. The assessor and chief county assessment officer shall add up and note the aggregate of each column in the assessment books; and shall also add in each book, under proper headings, a tabular statement, showing the footings of the several columns upon each page; and shall add up and set down the total of each column. When the assessor or chief county assessment officer returns several assessment books, he or she shall, in addition to this tabular statement, return a similar statement showing the totals of all the books.
(Source: P.A. 83-121; 88-455.)

35 ILCS 200/9-245

    (35 ILCS 200/9-245)
    Sec. 9-245. Return of books to board of review; counties of less than 3,000,000. In counties with less than 3,000,000 inhabitants, the chief county assessment officer shall on or before the third Monday in June of the assessment year, or on or before the 90th day following the certification of the final township assessment roll in the county, certified pursuant to Section 9-230 of this Code, whichever is later, return the assessment books to the board of review verified by affidavit, substantially in the following form:
State of Illinois)
                 )ss.
.......... County)
    I,...., chief county assessment officer do solemnly swear that this book contains a correct and full list of all the property subject to taxation in ...., so far as I have been able to ascertain the same; and that the assessed value set down in the column opposite the descriptions of property is a just and equitable assessment under the law, to the best of my knowledge and belief, and that the footings of the columns and the accompanying tabular statement, are correct to the best of my knowledge and belief.
    Dated ..........
(Source: P.A. 99-573, eff. 7-15-16.)

35 ILCS 200/9-250

    (35 ILCS 200/9-250)
    Sec. 9-250. Abstract of assessment by county clerk. Annually, upon receipt of the assessment books from the board of review or board of appeals, each county clerk shall make out and, within 30 days, transmit to the Department, on forms provided or approved by the Department, an abstract of the assessment of property. The values to be given in the abstracts shall be the assessed valuations.
(Source: Laws 1943, vol. 1, p. 1136; P.A. 88-455.)

35 ILCS 200/9-255

    (35 ILCS 200/9-255)
    Sec. 9-255. Statement of incomplete assessments. In case of the failure of any assessor to certify the assessment within the time specified in this Act, each county clerk shall transmit to the Department a statement of the assessment in all the townships or districts from which returns have been received, together with a statement of the amount of taxable property assessed in the defaulting townships or districts for the previous year.
(Source: Laws 1943, vol. 1, p. 1136; P.A. 88-455.)

35 ILCS 200/Art. 9 Div. 5

 
    (35 ILCS 200/Art. 9 Div. 5 heading)
Division 5. Omitted property

35 ILCS 200/9-260

    (35 ILCS 200/9-260)
    Sec. 9-260. Assessment of omitted property; counties of 3,000,000 or more.
    (a) After signing the affidavit, the county assessor shall have power, when directed by the board of appeals (until the first Monday in December 1998 and the board of review beginning the first Monday in December 1998 and thereafter), or on his or her own initiative, subject to the limitations of Sections 9-265 and 9-270, to assess properties which may have been omitted from assessments for the current year and not more than 3 years prior to the current year for which the property was liable to be taxed, and for which the tax has not been paid, but only on notice and an opportunity to be heard in the manner and form required by law, and shall enter the assessments upon the assessment books. Any notice shall include (i) a request that a person receiving the notice who is not the current taxpayer contact the office of the county assessor and explain that the person is not the current taxpayer, which contact may be made on the telephone, in writing, or in person upon receipt of the notice, and (ii) the name, address, and telephone number of the appropriate personnel in the office of the county assessor to whom the response should be made. Any time period for the review of an omitted assessment included in the notice shall be consistent with the time period established by the assessor in accordance with subsection (a) of Section 12-55. No charge for tax of previous years shall be made against any property if (1) the assessor failed to notify the board of review of the omitted assessment in accordance with subsection (a-1) of this Section; (2) the property was last assessed as unimproved, the owner of such property gave notice of subsequent improvements and requested a reassessment as required by Section 9-180, and reassessment of the property was not made within the 16 month period immediately following the receipt of that notice; (3) the owner of the property gave notice as required by Section 9-265; (4) the assessor received a building permit for the property evidencing that new construction had occurred or was occurring on the property but failed to list the improvement on the tax rolls; (5) the assessor received a plat map, plat of survey, ALTA survey, mortgage survey, or other similar document containing the omitted property but failed to list the improvement on the tax rolls; (6) the assessor received a real estate transfer declaration indicating a sale from an exempt property owner to a non-exempt property owner but failed to list the property on the tax rolls; or (7) the property was the subject of an assessment appeal before the assessor or the board of review that had included the intended omitted property as part of the assessment appeal and provided evidence of its market value.
    (a-1) After providing notice and an opportunity to be heard as required by subsection (a) of this Section, the assessor shall render a decision on the omitted assessment, whether or not the omitted assessment was contested, and shall mail a notice of the decision to the taxpayer of record or to the party that contested the omitted assessment. The notice of decision shall contain a statement that the decision may be appealed to the board of review. The decision and all evidence used in the decision shall be transmitted by the assessor to the board of review on or before the dates specified in accordance with Section 16-110.
    (b) Any taxes based on the omitted assessment of a property pursuant to Sections 9-260 through 9-270 and Sections 16-135 and 16-140 shall be prepared and mailed at the same time as the estimated first installment property tax bill for the preceding year (as described in Section 21-30) is prepared and mailed. The omitted assessment tax bill is not due until the date on which the second installment property tax bill for the preceding year becomes due. The omitted assessment tax bill shall be deemed delinquent and shall bear interest beginning on the day after the due date of the second installment (as described in Section 21-25). Any taxes for omitted assessments deemed delinquent after the due date of the second installment tax bill shall bear interest at the rate of 1.5% per month or portion thereof until paid or forfeited (as described in Section 21-25).
    (c) The assessor shall have no power to change the assessment or alter the assessment books in any other manner or for any other purpose so as to change or affect the taxes in that year, except as ordered by the board of appeals (until the first Monday in December 1998 and the board of review beginning the first Monday in December 1998 and thereafter). The county assessor shall make all changes and corrections ordered by the board of appeals (until the first Monday in December 1998 and the board of review beginning the first Monday in December 1998 and thereafter). The county assessor may for the purpose of revision by the board of appeals (until the first Monday in December 1998 and the board of review beginning the first Monday in December 1998 and thereafter) certify the assessment books for any town or taxing district after or when such books are completed.
(Source: P.A. 96-1553, eff. 3-10-11.)

35 ILCS 200/9-265

    (35 ILCS 200/9-265)
    Sec. 9-265. Omitted property; interest; change in exempt use or ownership.
    (a) If any property is omitted in the assessment of any year or years, not to exceed the current assessment year and 3 prior years, so that the taxes, for which the property was liable, have not been paid, or if by reason of defective description or assessment, taxes on any property for any year or years have not been paid, or if any taxes are refunded under subsection (b) of Section 14-5 because the taxes were assessed in the wrong person's name, the property, when discovered, shall be listed and assessed by the board of review or, in counties with 3,000,000 or more inhabitants, by the county assessor either on his or her own initiative or when so directed by the board of appeals or board of review.
    (b) The board of review in counties with less than 3,000,000 inhabitants or the county assessor in counties with 3,000,000 or more inhabitants may develop reasonable procedures for contesting the listing of omitted property under this Division.
    (c) For purposes of this Section, "defective description or assessment" includes a description or assessment which omits all the improvements thereon as a result of which part of the taxes on the total value of the property as improved remain unpaid. In the case of property subject to assessment by the Department, the property shall be listed and assessed by the Department. All such property shall be placed on the assessment and tax books.
    (d) The arrearages of taxes which might have been assessed, with 10% interest thereon for each year or portion thereof from 2 years after the time the first correct tax bill ought to have been received, shall be charged against the property by the county clerk.
    (e) When property or acreage omitted by either incorrect survey or other ministerial assessor error is discovered and the owner has paid its tax bills as received for the year or years of omission of the parcel, then the interest authorized by this Section shall not be chargeable to the owner. However, nothing in this Section shall prevent the collection of the principal amount of back taxes due and owing.
    (f) If any property listed as exempt by the chief county assessment officer has a change in use, a change in leasehold estate, or a change in titleholder of record by purchase, grant, taking or transfer, it shall be the obligation of the transferee to notify the chief county assessment officer in writing within 90 days of the change. If mailed, the notice shall be sent by certified mail, return receipt requested, and shall include the name and address of the taxpayer, the legal description of the property, and the property index number of the property when an index number exists. If notice is provided in person, it shall be provided on a form prescribed by the chief county assessment officer, and the chief county assessment officer shall provide a date stamped copy of the notice. Except as provided in item (6) of subsection (a) of Section 9-260, item (6) of Section 16-135, and item (6) of Section 16-140 of this Code, if the failure to give the notification results in the assessing official continuing to list the property as exempt in subsequent years, the property shall be considered omitted property for purposes of this Code.
    (g) In counties with fewer than 3,000,000 inhabitants, if a chief county assessment officer discovers at any time before judgment that a property has been granted a homestead exemption under Article 15 of this Code to which it was not entitled, the chief county assessment officer may consider the erroneously exempt portion of the property as omitted property under this Section for that taxable year only.
(Source: P.A. 98-615, eff. 6-1-14.)

35 ILCS 200/9-270

    (35 ILCS 200/9-270)
    Sec. 9-270. Omitted property; limitations on assessment. A charge for tax and interest for previous years, as provided in Sections 9-265 or 14-40, shall not be made against any property for years prior to the date of ownership of the person owning the property at the time the liability for the omitted tax was first ascertained. Ownership as used in this section shall be held to refer to bona fide legal and equitable titles or interests acquired for value and without notice of the tax, as may appear by deed, deed of trust, mortgage, certificate of purchase or sale, or other form of contract. No charge for tax of previous years, as provided in Section 9-265, shall be made against any property if (1) the assessor failed to notify the board of review of an omitted assessment in accordance with subsection (a-1) of Section 9-260; (2) the property was last assessed as unimproved, the owner of the property gave notice of subsequent improvements and requested a reassessment as required by Section 9-180, and reassessment of the property was not made within the 16 month period immediately following the receipt of that notice; (3) the owner of the property gave notice as required by Section 9-265; (4) the assessor received a building permit for the property evidencing that new construction had occurred or was occurring on the property but failed to list the improvement on the tax rolls; (5) the assessor received a plat map, plat of survey, ALTA survey, mortgage survey, or other similar document containing the omitted property but failed to list the improvement on the tax rolls; (6) the assessor received a real estate transfer declaration indicating a sale from an exempt property owner to a non-exempt property owner but failed to list the property on the tax rolls; or (7) the property was the subject of an assessment appeal before the assessor or the board of review that had included the intended omitted property as part of the assessment appeal and provided evidence of its market value. The owner of property, if known, assessed under this and the preceding section shall be notified by the county assessor, board of review or Department, as the case may require.
(Source: P.A. 96-1553, eff. 3-10-11.)

35 ILCS 200/9-275

    (35 ILCS 200/9-275)
    Sec. 9-275. Erroneous homestead exemptions.
    (a) For purposes of this Section:
    "Erroneous homestead exemption" means a homestead exemption that was granted for real property in a taxable year if the property was not eligible for that exemption in that taxable year. If the taxpayer receives an erroneous homestead exemption under a single Section of this Code for the same property in multiple years, that exemption is considered a single erroneous homestead exemption for purposes of this Section. However, if the taxpayer receives erroneous homestead exemptions under multiple Sections of this Code for the same property, or if the taxpayer receives erroneous homestead exemptions under the same Section of this Code for multiple properties, then each of those exemptions is considered a separate erroneous homestead exemption for purposes of this Section.
    "Homestead exemption" means an exemption under Section 15-165 (veterans with disabilities), 15-167 (returning veterans), 15-168 (persons with disabilities), 15-169 (standard homestead for veterans with disabilities), 15-170 (senior citizens), 15-172 (senior citizens assessment freeze), 15-175 (general homestead), 15-176 (alternative general homestead), or 15-177 (long-time occupant).
    "Erroneous exemption principal amount" means the total difference between the property taxes actually billed to a property index number and the amount of property taxes that would have been billed but for the erroneous exemption or exemptions.
    "Taxpayer" means the property owner or leasehold owner that erroneously received a homestead exemption upon property.
    (b) Notwithstanding any other provision of law, in counties with 3,000,000 or more inhabitants, the chief county assessment officer shall include the following information with each assessment notice sent in a general assessment year: (1) a list of each homestead exemption available under Article 15 of this Code and a description of the eligibility criteria for that exemption; (2) a list of each homestead exemption applied to the property in the current assessment year; (3) information regarding penalties and interest that may be incurred under this Section if the taxpayer received an erroneous homestead exemption in a previous taxable year; and (4) notice of the 60-day grace period available under this subsection. If, within 60 days after receiving his or her assessment notice, the taxpayer notifies the chief county assessment officer that he or she received an erroneous homestead exemption in a previous taxable year, and if the taxpayer pays the erroneous exemption principal amount, plus interest as provided in subsection (f), then the taxpayer shall not be liable for the penalties provided in subsection (f) with respect to that exemption.
    (c) In counties with 3,000,000 or more inhabitants, when the chief county assessment officer determines that one or more erroneous homestead exemptions was applied to the property, the erroneous exemption principal amount, together with all applicable interest and penalties as provided in subsections (f) and (j), shall constitute a lien in the name of the People of Cook County on the property receiving the erroneous homestead exemption. Upon becoming aware of the existence of one or more erroneous homestead exemptions, the chief county assessment officer shall cause to be served, by both regular mail and certified mail, a notice of discovery as set forth in subsection (c-5). The chief county assessment officer in a county with 3,000,000 or more inhabitants may cause a lien to be recorded against property that (1) is located in the county and (2) received one or more erroneous homestead exemptions if, upon determination of the chief county assessment officer, the taxpayer received: (A) one or 2 erroneous homestead exemptions for real property, including at least one erroneous homestead exemption granted for the property against which the lien is sought, during any of the 3 collection years immediately prior to the current collection year in which the notice of discovery is served; or (B) 3 or more erroneous homestead exemptions for real property, including at least one erroneous homestead exemption granted for the property against which the lien is sought, during any of the 6 collection years immediately prior to the current collection year in which the notice of discovery is served. Prior to recording the lien against the property, the chief county assessment officer shall cause to be served, by both regular mail and certified mail, return receipt requested, on the person to whom the most recent tax bill was mailed and the owner of record, a notice of intent to record a lien against the property. The chief county assessment officer shall cause the notice of intent to record a lien to be served within 3 years from the date on which the notice of discovery was served.
    (c-5) The notice of discovery described in subsection (c) shall: (1) identify, by property index number, the property for which the chief county assessment officer has knowledge indicating the existence of an erroneous homestead exemption; (2) set forth the taxpayer's liability for principal, interest, penalties, and administrative costs including, but not limited to, recording fees described in subsection (f); (3) inform the taxpayer that he or she will be served with a notice of intent to record a lien within 3 years from the date of service of the notice of discovery; (4) inform the taxpayer that he or she may pay the outstanding amount, plus interest, penalties, and administrative costs at any time prior to being served with the notice of intent to record a lien or within 30 days after the notice of intent to record a lien is served; and (5) inform the taxpayer that, if the taxpayer provided notice to the chief county assessment officer as provided in subsection (d-1) of Section 15-175 of this Code, upon submission by the taxpayer of evidence of timely notice and receipt thereof by the chief county assessment officer, the chief county assessment officer will withdraw the notice of discovery and reissue a notice of discovery in compliance with this Section in which the taxpayer is not liable for interest and penalties for the current tax year in which the notice was received.
    For the purposes of this subsection (c-5):
    "Collection year" means the year in which the first and second installment of the current tax year is billed.
    "Current tax year" means the year prior to the collection year.
    (d) The notice of intent to record a lien described in subsection (c) shall: (1) identify, by property index number, the property against which the lien is being sought; (2) identify each specific homestead exemption that was erroneously granted and the year or years in which each exemption was granted; (3) set forth the erroneous exemption principal amount due and the interest amount and any penalty and administrative costs due; (4) inform the taxpayer that he or she may request a hearing within 30 days after service and may appeal the hearing officer's ruling to the circuit court; (5) inform the taxpayer that he or she may pay the erroneous exemption principal amount, plus interest and penalties, within 30 days after service; and (6) inform the taxpayer that, if the lien is recorded against the property, the amount of the lien will be adjusted to include the applicable recording fee and that fees for recording a release of the lien shall be incurred by the taxpayer. A lien shall not be filed pursuant to this Section if the taxpayer pays the erroneous exemption principal amount, plus penalties and interest, within 30 days of service of the notice of intent to record a lien.
    (e) The notice of intent to record a lien shall also include a form that the taxpayer may return to the chief county assessment officer to request a hearing. The taxpayer may request a hearing by returning the form within 30 days after service. The hearing shall be held within 90 days after the taxpayer is served. The chief county assessment officer shall promulgate rules of service and procedure for the hearing. The chief county assessment officer must generally follow rules of evidence and practices that prevail in the county circuit courts, but, because of the nature of these proceedings, the chief county assessment officer is not bound by those rules in all particulars. The chief county assessment officer shall appoint a hearing officer to oversee the hearing. The taxpayer shall be allowed to present evidence to the hearing officer at the hearing. After taking into consideration all the relevant testimony and evidence, the hearing officer shall make an administrative decision on whether the taxpayer was erroneously granted a homestead exemption for the taxable year in question. The taxpayer may appeal the hearing officer's ruling to the circuit court of the county where the property is located as a final administrative decision under the Administrative Review Law.
    (f) A lien against the property imposed under this Section shall be filed with the county recorder of deeds, but may not be filed sooner than 60 days after the notice of intent to record a lien was delivered to the taxpayer if the taxpayer does not request a hearing, or until the conclusion of the hearing and all appeals if the taxpayer does request a hearing. If a lien is filed pursuant to this Section and the taxpayer received one or 2 erroneous homestead exemptions during any of the 3 collection years immediately prior to the current collection year in which the notice of discovery is served, then the erroneous exemption principal amount, plus 10% interest per annum or portion thereof from the date the erroneous exemption principal amount would have become due if properly included in the tax bill, shall be charged against the property by the chief county assessment officer. However, if a lien is filed pursuant to this Section and the taxpayer received 3 or more erroneous homestead exemptions during any of the 6 collection years immediately prior to the current collection year in which the notice of discovery is served, the erroneous exemption principal amount, plus a penalty of 50% of the total amount of the erroneous exemption principal amount for that property and 10% interest per annum or portion thereof from the date the erroneous exemption principal amount would have become due if properly included in the tax bill, shall be charged against the property by the chief county assessment officer. If a lien is filed pursuant to this Section, the taxpayer shall not be liable for interest that accrues between the date the notice of discovery is served and the date the lien is filed. Before recording the lien with the county recorder of deeds, the chief county assessment officer shall adjust the amount of the lien to add administrative costs, including but not limited to the applicable recording fee, to the total lien amount.
    (g) If a person received an erroneous homestead exemption under Section 15-170 and: (1) the person was the spouse, child, grandchild, brother, sister, niece, or nephew of the previous taxpayer; and (2) the person received the property by bequest or inheritance; then the person is not liable for the penalties imposed under this Section for any year or years during which the chief county assessment officer did not require an annual application for the exemption. However, that person is responsible for any interest owed under subsection (f).
    (h) If the erroneous homestead exemption was granted as a result of a clerical error or omission on the part of the chief county assessment officer, and if the taxpayer has paid the tax bills as received for the year in which the error occurred, then the interest and penalties authorized by this Section with respect to that homestead exemption shall not be chargeable to the taxpayer. However, nothing in this Section shall prevent the collection of the erroneous exemption principal amount due and owing.
    (i) A lien under this Section is not valid as to (1) any bona fide purchaser for value without notice of the erroneous homestead exemption whose rights in and to the underlying parcel arose after the erroneous homestead exemption was granted but before the filing of the notice of lien; or (2) any mortgagee, judgment creditor, or other lienor whose rights in and to the underlying parcel arose before the filing of the notice of lien. A title insurance policy for the property that is issued by a title company licensed to do business in the State showing that the property is free and clear of any liens imposed under this Section shall be prima facie evidence that the taxpayer is without notice of the erroneous homestead exemption. Nothing in this Section shall be deemed to impair the rights of subsequent creditors and subsequent purchasers under Section 30 of the Conveyances Act.
    (j) When a lien is filed against the property pursuant to this Section, the chief county assessment officer shall mail a copy of the lien to the person to whom the most recent tax bill was mailed and to the owner of record, and the outstanding liability created by such a lien is due and payable within 30 days after the mailing of the lien by the chief county assessment officer. This liability is deemed delinquent and shall bear interest beginning on the day after the due date at a rate of 1.5% per month or portion thereof. Payment shall be made to the county treasurer. Upon receipt of the full amount due, as determined by the chief county assessment officer, the county treasurer shall distribute the amount paid as provided in subsection (k). Upon presentment by the taxpayer to the chief county assessment officer of proof of payment of the total liability, the chief county assessment officer shall provide in reasonable form a release of the lien. The release of the lien provided shall clearly inform the taxpayer that it is the responsibility of the taxpayer to record the lien release form with the county recorder of deeds and to pay any applicable recording fees.
    (k) The county treasurer shall pay collected erroneous exemption principal amounts, pro rata, to the taxing districts, or their legal successors, that levied upon the subject property in the taxable year or years for which the erroneous homestead exemptions were granted, except as set forth in this Section. The county treasurer shall deposit collected penalties and interest into a special fund established by the county treasurer to offset the costs of administration of the provisions of this Section by the chief county assessment officer's office, as appropriated by the county board. If the costs of administration of this Section exceed the amount of interest and penalties collected in the special fund, the chief county assessor shall be reimbursed by each taxing district or their legal successors for those costs. Such costs shall be paid out of the funds collected by the county treasurer on behalf of each taxing district pursuant to this Section.
    (l) The chief county assessment officer in a county with 3,000,000 or more inhabitants shall establish an amnesty period for all taxpayers owing any tax due to an erroneous homestead exemption granted in a tax year prior to the 2013 tax year. The amnesty period shall begin on the effective date of this amendatory Act of the 98th General Assembly and shall run through December 31, 2013. If, during the amnesty period, the taxpayer pays the entire arrearage of taxes due for tax years prior to 2013, the county clerk shall abate and not seek to collect any interest or penalties that may be applicable and shall not seek civil or criminal prosecution for any taxpayer for tax years prior to 2013. Failure to pay all such taxes due during the amnesty period established under this Section shall invalidate the amnesty period for that taxpayer.
    The chief county assessment officer in a county with 3,000,000 or more inhabitants shall (i) mail notice of the amnesty period with the tax bills for the second installment of taxes for the 2012 assessment year and (ii) as soon as possible after the effective date of this amendatory Act of the 98th General Assembly, publish notice of the amnesty period in a newspaper of general circulation in the county. Notices shall include information on the amnesty period, its purpose, and the method by which to make payment.
    Taxpayers who are a party to any criminal investigation or to any civil or criminal litigation that is pending in any circuit court or appellate court, or in the Supreme Court of this State, for nonpayment, delinquency, or fraud in relation to any property tax imposed by any taxing district located in the State on the effective date of this amendatory Act of the 98th General Assembly may not take advantage of the amnesty period.
    A taxpayer who has claimed 3 or more homestead exemptions in error shall not be eligible for the amnesty period established under this subsection.
(Source: P.A. 98-93, eff. 7-16-13; 98-756, eff. 7-16-14; 98-811, eff. 1-1-15; 98-1143, eff. 1-1-15; 99-143, eff. 7-27-15; 99-851, eff. 8-19-16.)