The March 1 application deadline for property tax relief is set in the Homeowner Tax Relief Act (Section 341 of Act 72 of 2004). Homestead applications may be filed from December 15 through March 1 (or the next official business day should March 1 fall on a weekend).150 N. Queen St. Suite 310. Lancaster, PA 17603. The filing deadline for qualified applicants to receive consideration for a Homestead exemption for property taxes is March 1. Description: CoOp managers should complete and submit this form along with their annual online applications. The Homeowner Tax Relief Act applications will be mailed prior December 31. Deadline for filing the application is March 1 and within 30 days applicants will be notified if they qualify for a real estate tax reduction. You will not have to reapply again unless your status changes that would require you to fill out a new application. i.e. If known, fill in the tax map parcel number for which you are seeking a homestead exclusion.