The homestead exemp- tion provides a reduction in property taxes to qualified senior or disabled citizens, or a surviving spouse, on the dwelling that is that. Download the Act 50 Applications(PDF, 1MB) and complete it.Allegheny County has several programs that may help to reduce or eliminate a property tax bill. Homestead Exemption. 1. Fill in the parcel number of the property for which you are seeking a homestead exclusion. Frequently Asked Questions (FAQ'S) about Allegheny County property assessments and property tax appeals.