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How do I appeal my property tax assessment in Pennsylvania?

Federal & State Law Editorial TeamLast reviewed: 2026-05-17

Pennsylvania property tax appeals operate under the Fourth-to-Eighth Class County Assessment Law (53 Pa.C.S. Ch. 88), the Second Class County Code, and Philadelphia's separate AVI system.

1. Common-Level Ratio (CLR)

Because counties rarely reassess, the State Tax Equalization Board (STEB) publishes a CLR each year (Common Level Ratio). To win on overvaluation, you generally must show: assessed value > (market value × CLR). For example, if CLR is 50% and market value is $300,000, the lawful assessment cap is $150,000.

2. File Appeal with Board of Assessment Appeals (BAA)

Deadlines vary:

  • Most counties: August 1 for the following tax year.
  • Allegheny County: March 31.
  • Philadelphia (OPA + BRT): first Monday in October for annual appeals.
  • 3. BAA Hearing

    Bring an independent appraisal, recent comparable sales, photos of physical defects, and (for commercial) income/expense statements. The school district can also appeal — and often does file "spot appeals" on properties that recently sold above assessment.

    4. Court of Common Pleas

    Appeal the BAA's order within 30 days to the Court of Common Pleas under 72 P.S. § 5350 / 53 Pa.C.S. § 8854. The court hears the matter de novo. Either party may then appeal to Commonwealth Court.

    5. Homestead/Farmstead Exclusion

    Act 50 of 1998 allows counties and school districts to grant a homestead exclusion that reduces assessed value of an owner-occupied residence. Apply by March 1 with the county assessor.

    This is legal information, not legal advice.

    When to Talk to a Lawyer
    • High-value commercial property assessment appeal
    • Complex valuation methodology dispute or spot appeal by school district
    • Court of Common Pleas appeal after BAA ruling
    Related Statutes & Laws
    • 72 P.S. § 5347
    • 72 P.S. § 5350
    • 53 Pa.C.S. § 8854
    • 53 Pa.C.S. § 8584 (Homestead)
    • Pa. Const. art. VIII § 1 (Uniformity)

    This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.