Synopsis As Introduced Amends the Property Tax Code in the provisions dealing with the Board of Review in counties of 3,000,000 or more in habitants. Provides that a commercial building owner who has an agreement with a municipality that contains representations made at public municipal hearings that the building shall be fully leased may not file a complaint to the Board of Review requesting a reduction in assessment for any tax year based on the buildings occupancy rate (currently, no prohibition). Provides that commercial building owner may file a complaint for any other valid reason.