{"data":{"id":"us-il/35-ilcs-250-25","jurisdiction":"us-il","citation":"35 ILCS 250/25","heading":"Retroactive application.","body":"The corporate authorities of a county to which this Act applies may use any county record or other information that predates the effective date of this Act by up to 5 years for the purpose of determining whether an increase in the market value of a longtime owner-occupant's principal residence is a consequence of the refurbishing or renovating of other residences or the construction of new residences in long-established residential areas or areas of deteriorated, vacant, or abandoned homes and properties.","path":["CHAPTER 35 REVENUE","Longtime Owner-Occupant Property Tax Relief Act."],"source_url":"https://www.ilga.gov/legislation/ILCS/details?ActID=607\u0026ChapterID=8\u0026ChapAct=FullText\u0026Print=True","current_through":"at least Public Act 104-790","vintage":"","retrieved_at":"2026-09-15T04:46:20Z","sha256":"565314557af65ee0859bb1fc371563ee2186f07a1f7c8509e8120db4bf51d9af","source_id":"us-il","stale":false,"prev":"us-il/35-ilcs-250-20","next":"us-il/35-ilcs-250-30"},"notice":"GroundRules: Original legal text. Not legal advice."}