Download the Act 50 Applications(PDF, 1MB) and complete it. Homeowners should contact their county assessment office (position 48) for a copy of their county's homestead and farmstead application form.1. Fill in the parcel number of the property for which you are seeking a homestead exclusion. Have lived in and owned their current Allegheny County residence for at least 10 years. To receive a homestead or farmstead exclusion, a Pennsylvania resident must submit an application to the county assessor prior to March 1. Must have owned and occupied a primary residence in Allegheny County continuously for the past 10 years. To qualify for the Allegheny County Homestead Act, you must be the owner of the property and occupy the dwelling as your primary residence. Act 50 – Homestead Tax Exemption. What is the homestead exclusion for Allegheny County? If known, fill in the parcel number of the property for which you are seeking a homestead exclusion.