Download the Act 50 Applications(PDF, 1MB) and complete it. File this form and all supporting documentation with the appraisal district office in each county in which the property is located generally between Jan.This video will cover how to fill out the homestead exemption form. The application can be found on your appraisal district website or using Texas Comptroller Form 50-114. Homestead exemption allegheny county. 1. Fill in the parcel number of the property for which you are seeking a homestead exclusion. Please read the instructions before completing this application. Basic Information. 1. You must apply with your county appraisal district to get a homestead exemption. Applying is free and only needs to be filed once.