If Pennsylvania has over-valued your home, you overpay property tax every year until you fix it. Filing an appeal is a standard, homeowner-friendly process — here is exactly how it works in Pennsylvania, including the deadline, the governing law, and the five steps to file.
The Pennsylvania deadline
The appeal window in Pennsylvania is typically July - September, and the filing deadline is August 1 or September 1 (varies by county). Miss it and you generally wait a full year, so check your assessment notice the moment it arrives. See the national deadline calendar for how this compares.
How Pennsylvania values your home
Pennsylvania assesses property at 100% of market value, so the value on your notice is what the county believes your home would sell for. Compare it directly to recent sales. Pennsylvania counties assess at a fraction of market value based on a base year, using the common level ratio to convert current market value to assessed value. The process is authorized under 53 Pa. Stat. § 8844 (assessment appeals); county assessment law.
How to appeal your property taxes in Pennsylvania
Step 1. Review your assessed value and the county's common level ratio (CLR).
Step 2. File an appeal with the county Board of Assessment Appeals by the county deadline (Aug 1 or Sept 1).
Step 3. Provide comparable sales and apply the CLR to estimate implied market value.
Step 4. Present your case at the Board of Assessment Appeals hearing.
Step 5. Appeal to the county Court of Common Pleas within 30 days if needed.
Build your evidence
The strongest case is a tight set of comparable sales — 3 to 5 similar homes near you that sold for less than your assessed value — plus any property-record errors you can document. You can also make an unequal-assessment argument if comparable homes are assessed for less than yours.
Don't forget exemptions
An appeal lowers your value, but a homestead exemption cuts your taxable base directly — and the two stack. Confirm you're enrolled with your county before you file.
The shortcut
Checking comps and building the packet is where most homeowners give up. TaxAppealAgent does it for you: check your Pennsylvania property for $4.99 (credited), and if you're over-assessed we assemble the comparable-sales evidence and a Pennsylvania-specific appeal letter for a flat $29. You file it and keep 100% of the savings. See the full Pennsylvania appeal guide.