Synopsis As Introduced Amends the Mobile Home Park Act. Provides that there must be an open space of 3 meters (10 feet) side-to-side, 2.4 meters (8 feet) end-to-side, or 1.8 meters (6 feet) end-to-end horizontally between mobile homes or community buildings, unless the exposed composite walls and roof of either structure are without openings and constructed of materials that will provide a one-hour fire resistance rating or the structures are separated by a one-hour fire-rated barrier (instead of requiring an open space of at least 10 feet adjacent to the sides and at least 5 feet adjacent to the ends of every mobile home). Provides that whenever an owner of a mobile home or a manager, agent, or representative from a mobile home community enlarges or expands a concrete pad used to support a mobile home, installs a new mobile home, or replaces an existing mobile home on or after the effective date of this amendatory Act, that change shall be deemed to be a new site and is subject to the setback requirements imposed by this amendatory Act. Provides that the space under a manufactured home may not be used for the storage of combustible materials or for the storage or placement of flammable liquids, gases, or liquid-fuel-powered or gas-fuel-powered equipment. Provides that porches and other specified structures must be constructed of materials that do not support combustion (instead of materials specified by regulations). Provides that accessory buildings or sheds that are constructed of materials that do not support combustion shall be not less than 0.9 meters (3 feet) from a mobile home. Effective immediately.