Amends the Property Tax Code. Provides that the abatement for property located in an area of urban decay also applies to newly remodeled single-family or duplex residential dwelling units (currently, only newly constructed single-family or duplex dwelling units). Provides that provisions requiring the abatement to be reduced in 20% increments annually during the last 4 years of the abatement period apply only to abatements granted prior to the effective date. Effective immediately.