Pennsylvania property tax appeal: how the assessment appeals board works

Last updated 2026-07-11

What is the Pennsylvania Board of Assessment Appeals and what does it do?

Every county in Pennsylvania has a Board of Assessment Appeals (some counties call it the Board of Assessment Review or Board of Property Assessment Appeals). It's a quasi-judicial panel that can change the assessed value of any property in the county after a formal hearing. It sits one level above the county assessor's office and one level below the Court of Common Pleas.

The board exists because the Pennsylvania Constitution requires uniformity in property taxation ^[1]. When an assessor gets a value wrong, the board is the fix that's supposed to work without every homeowner hiring a lawyer and going to court. Most counties appoint three board members; some larger counties have more. They aren't judges, but they run a formal record and issue written decisions.

Here's the part people miss. The board's job isn't to decide whether your taxes feel too high. Its job is to find the fair market value of your property as of the county's base year, then check whether the assessed value is the correct fraction of that market value under the county's predetermined ratio ^[2]. "I can't afford this" goes nowhere. "Here are three comparable sales that prove my property is worth less than the assessor claims" can win outright.

Which law governs property tax appeals in Pennsylvania?

The main statute is the Fourth to Eighth Class County Assessment Law (72 P.S. § 5453.101 et seq.) for most counties. Philadelphia operates under its own law, and Allegheny County follows the Consolidated County Assessment Law (72 P.S. § 8801-C et seq.) ^[3]. For second and third class counties, the General County Assessment Law (72 P.S. § 5020-101 et seq.) also applies.

This patchwork matters. Deadlines, forms, and procedures change with the class of county. A rule in Chester County may not work the same way in Erie County. The Pennsylvania State Association of County Controllers publishes a county-by-county reference, and every county assessor posts its own appeal procedures online.

The Pennsylvania Constitution, Article VIII, Section 1, requires that "all taxes shall be uniform, upon the same class of subjects, within the territorial limits of the authority levying the tax" ^[1]. That uniformity clause is your legal hook. If a similar house down the block carries a lower assessment, that's more than unfair. It's arguably unconstitutional, and the board has to take it seriously.

What are the filing deadlines for a Pennsylvania property tax appeal?

Pennsylvania has no single statewide deadline. Each county sets its own, and missing it costs you a full year. Below are the deadlines for the most-appealed counties as of 2024-2025. Confirm with your county assessor, because dates shift.

County	Annual appeal deadline	Notes
Philadelphia	First Monday in October	Appeals to BRT; uses First Level Review first
Allegheny	March 31	Separate deadline for taxing body appeals
Montgomery	August 1	30 days from notice if notice arrives after Aug 1
Chester	August 1	30 days from notice for new construction/change
Bucks	August 1	30 days from notice for interim assessments
Delaware	August 1	Board meets Sept-Oct
Lancaster	September 1	40-day window from mailing of notice
York	September 1	Varies for interim assessments
Berks	September 1	Check county website for exact mailing date
Erie	September 1	Appeals heard Oct-Nov

In most counties, the annual deadline applies even if no notice ever landed in your mailbox. The assessor's records count as public notice. Set a calendar reminder every January to pull your current assessed value and compare it to recent sales.

Got a new assessment notice from a sale, new construction, or a reassessment? You typically get 30 to 40 days from the date on that notice, no matter where the annual deadline falls ^[4]. That short window catches a lot of people. Don't wait.

How do you file a Pennsylvania property tax appeal?

Start with the right form. Every county board has its own appeal petition, usually downloadable from the county assessor's or county government website. Philadelphia and Allegheny run online filing portals. Most smaller counties still want a paper form mailed or hand-delivered to the board's office.

The petition asks for your parcel ID number (called the parcel identification number or map number, depending on the county), the current assessed value, the value you want, and your reason for appealing. That reason field matters. Don't write "too high." Write something like: "Recent comparable sales indicate market value of approximately $X; the current assessment implies a higher value inconsistent with the county's established ratio."

Expect a filing fee. Fees run roughly $25 to $100 for residential properties. Allegheny County charges $43.50 for residential appeals as of 2024 ^[5]. Keep your receipt.

After you file, the board mails your hearing date. Annual appeal hearings usually land 60 to 120 days after the filing deadline. Use that time to build your evidence. Not every county requires you to appear, but showing up matters. Boards take written submissions more seriously when the owner is sitting there to explain them.

If you want a structured roadmap for building the evidence file and filling out the petition correctly, the TaxFightBack DIY appeal kit walks through each step county by county, so you keep every dollar of the savings instead of splitting a contingency fee.

What evidence actually wins a Pennsylvania assessment appeal?

Comparable sales data, called comps, is your strongest evidence. You want recent arm's-length sales of properties like yours: same neighborhood, similar size, similar age, similar condition. "Recent" in Pennsylvania assessment law means sales within 12 to 24 months of the county's base year assessment date ^[2]. Pull them from your county's public records or from Zillow, Redfin, or the Pennsylvania Assessors Association data.

For each comp, build a one-page summary: address, sale date, sale price, square footage, lot size, and any big differences from your property. If a comp is bigger or has a finished basement yours lacks, say so. Honesty signals you did real work instead of cherry-picking, and boards notice.

A licensed appraisal is the strongest piece you can bring. A certified Pennsylvania appraisal done for appeal purposes typically costs $350 to $600 for a residential property ^[6]. It isn't required, but it carries weight because a licensed professional prepared it and can be cross-examined. If your potential tax savings top $1,000 a year, the appraisal usually pays for itself in year one.

Other evidence that helps:

• A recent purchase price if you bought within the last two years. A bona fide sale is strong proof of fair market value.
• Photos showing condition, deferred maintenance, or features the assessor's record overstates (phantom bathrooms, square footage that doesn't match your deed).
• The assessor's property record card, which you can request free from the assessor's office. Check every field for errors.
• Clean and Green program participation records, if they apply.

What falls flat: your personal opinion of value, what you paid in a different market, your neighbor's tax bill (that's an equity argument, handled separately), and any talk of financial hardship.

What happens at the assessment appeals board hearing?

Pennsylvania board hearings are informal next to a courtroom, but they're still a legal proceeding with a record. You'll sit at a table, the board will have the assessor's file, and you present first because you're the appellant.

Introduce yourself, state your parcel number and address, and hand the board a clear one-page summary of your ask: "I'm requesting the board reduce the assessed value from $X to $Y, based on the following evidence." Then walk through your comps or appraisal. Keep it tight. Board members often hear 20 to 40 cases in a single day.

The assessor's office may send someone to defend the current value. They usually lean on a mass appraisal model and their own comps. You can ask questions and challenge their comparables, but stay professional. Boards don't reward homeowners who turn it into a fight.

Don't expect a decision at the hearing. You'll get a written decision by mail, usually within 30 to 90 days. The letter states the new assessed value, if anything changed.

Here's a risk to know going in. If the school district or municipality dislikes the board's decision (or your reduction), they can appeal too, either before the board originally or to the Court of Common Pleas afterward. This is a "taxing body appeal," and it happens more often than homeowners expect, especially in counties going through reassessment ^[7].

How does the county's predetermined ratio affect your appeal?

Pennsylvania doesn't make counties assess at 100% of fair market value. Each county sets a "common level ratio" (CLR) or "predetermined ratio" that captures the relationship between assessed values and actual sale prices ^[2]. The State Tax Equalization Board (STEB) publishes the official CLR for each county every year.

Here's why that runs your whole case. If your county's CLR is 50%, a property with a fair market value of $300,000 should carry an assessed value of $150,000. If the assessor has it at $180,000, the property is over-assessed against the ratio. At the hearing you'd argue: "Fair market value, supported by comps, is $300,000. The CLR is 50%. The correct assessment is $150,000, not $180,000."

STEB publishes the CLR table annually. For the 2024 tax year, ratios range from under 10% in counties that haven't reassessed in decades to 100% in counties that recently finished a countywide reassessment ^[8]. Look up your county's current ratio before you build anything, because it sets the target assessed value you'll request, even more than the raw market value number.

The Pennsylvania Supreme Court has held that a taxpayer can use the CLR itself as evidence of over-assessment under the common level doctrine, without a full appraisal. This is sometimes called a "CLR appeal," and it's a gift in counties with very old base years.

What if the board rules against you? Can you appeal further?

Yes. A county Board of Assessment Appeals decision isn't final. You have 30 days from the mailing of the board's decision to appeal to the Court of Common Pleas ^[4]. This is a de novo proceeding, so the court hears the case fresh rather than reviewing what the board did.

Court of Common Pleas appeals are where attorneys usually enter, because the process is formal (discovery, motions, a trial-like hearing) and a licensed appraiser's testimony is essentially required. Legal and appraisal costs for a residential court appeal typically run $2,000 to $8,000. That math only works if your annual tax savings would be substantial, generally more than $1,500 to $2,000 a year.

Some counties allow mediation or informal settlement before the court date. Allegheny County runs a formal mediation program through its Office of Property Assessments, and settlements reached there are binding ^[5]. Mediation is worth chasing. The assessor's office often settles at a middle-ground value rather than pay attorney costs for a full trial.

Beyond Common Pleas, appeals can go to Commonwealth Court and ultimately the Pennsylvania Supreme Court, though that's exceptionally rare for a residential property.

Are there property tax exemptions in Pennsylvania that reduce your bill without an appeal?

Several exemptions cut your actual tax bill whether or not your assessed value is correct.

The Homestead Exclusion is open to owner-occupied primary residences in every Pennsylvania school district. It reduces the assessed value used for school tax by a flat dollar amount, typically $10,000 to $30,000 depending on the district's funding level ^[9]. You apply once through your county assessor, and it renews automatically unless your ownership status changes.

The Farmstead Exclusion applies the same way to farm buildings on agricultural land.

The Property Tax/Rent Rebate Program, run by the Pennsylvania Department of Revenue, pays rebates of $380 to $1,000 (with supplemental amounts) to eligible homeowners 65 and older, widows and widowers 50 and older, and people with disabilities 18 and older. The income limit is $35,000 for homeowners, and half of Social Security income is excluded from that calculation ^[10]. The Pennsylvania Lottery and casino revenues fund the program.

Some municipalities also run local senior tax freeze programs or earned income tax exemptions that touch your property tax bill indirectly. Check with your municipal tax office.

One thing to keep straight: these exemptions cut your bill but don't change your assessed value. If your assessed value is genuinely too high, you want both the exemption and the appeal. They aren't mutually exclusive.

How much can a successful appeal actually save you?

Savings hinge on three things: the size of the assessment reduction, the combined millage rate of every taxing body using that assessment, and whether the county's ratio means even a big market value correction produces only a modest change in assessed value.

A rough formula: annual savings = (assessed value reduction) x (combined millage rate / 1000). If your combined millage (school district plus county plus municipality) is 25 mills and the board drops your assessed value by $50,000, you save $1,250 a year. That reduction holds until the county runs a countywide reassessment.

Some Pennsylvania counties haven't reassessed since the 1970s. Westmoreland County's base year was 1972 as of recent reporting. In those places the CLR is very low, so a small reduction in assessed value produces a small absolute dollar savings. But the percentage overassessment is often enormous, and the CLR doctrine hands you a real argument.

Board-level residential appeals succeed roughly 40% to 60% of the time when the appellant brings comparable sales evidence, and much less often when they show up with nothing ^[7]. Nobody has clean statewide data on this. Those estimates come from individual county annual reports, not a centralized Pennsylvania database, so treat them as directional.

For how a similar board process runs in another big metro, see our guide on the cook county tax assessor tax bill process, which shares structural features with Allegheny County's system.

Allegheny County and Philadelphia: what's different in Pennsylvania's two biggest counties?

These two counties earn their own section because the rules really do differ from the rest of the state.

Allegheny County ran its first countywide reassessment in decades in 2012-2013. Appeals go to the Board of Property Assessment Appeals and Review (BPAAR). The annual deadline is March 31. Allegheny also lets taxing bodies (Pittsburgh Public Schools especially) appeal values upward, and they do it hard. Win a reduction, and the school district sometimes appeals your new lower value. This is a "reverse appeal," and it's a genuine risk to weigh before you file ^[5].

Philadelphia runs the Board of Revision of Taxes (BRT), not a Board of Assessment Appeals. Philadelphia requires a First Level Review (FLR) before the formal BRT hearing. You submit evidence online, and the Office of Property Assessment reviews it internally first. If the FLR doesn't get you the reduction you want, you move on to a BRT hearing. The Philadelphia deadline is the first Monday in October for the following year's assessment ^[11]. Philadelphia's Actual Value Initiative (AVI) reset all assessments to 100% of market value starting in 2014.

For both counties, the county website is the authoritative source. Their internal processes change more often than state statutes do.

Should you hire a lawyer or tax appeal firm, or do it yourself?

For a board-level residential appeal, most homeowners don't need a lawyer. The hearing is informal, the evidence is straightforward once you have comps, and the paperwork is built for non-lawyers. This is exactly where doing it yourself saves real money.

Contingency firms typically charge 30% to 50% of the first year's tax savings. Cut your annual bill by $2,000 and you hand the firm $600 to $1,000. That fee recurs in some contracts for multiple years. Over three years, a 40% contingency on a $2,000 saving costs you $2,400 in fees against $6,000 in savings.

The TaxFightBack appeal kit is built for this exact situation: a homeowner with a credible case who doesn't want to give away a third of the winnings. It earns its keep most when your county publishes clear comp data and your over-assessment is easy to document.

Hire a lawyer when the potential savings top $3,000 a year and you want to pursue the Court of Common Pleas, when a taxing body has counter-appealed your reduction, or when the property is commercial or mixed-use with a complex income-approach valuation. At those levels, professional representation generally pays for itself.

One honest note. Some attorneys and CPA firms do flat-fee board-level representation for around $500 to $1,500. If presenting at a hearing makes you nervous, that's a middle path worth a look, though you can absolutely do it yourself.

Frequently asked questions

What is the deadline to appeal my property tax assessment in Pennsylvania?

There's no single statewide deadline. Most counties set annual deadlines between August 1 and September 1. Allegheny County's is March 31; Philadelphia's is the first Monday in October. If you got a new assessment notice from a sale or new construction, you typically have 30 to 40 days from that notice date to file. Always confirm with your specific county's Board of Assessment Appeals.

How do I file a property tax appeal in Pennsylvania?

Download the appeal petition from your county assessor or board of assessment appeals website. Fill in your parcel ID, current assessed value, the value you're requesting, and your reason. File before the deadline with the required fee (typically $25 to $100 for residential). Gather comps or an appraisal before your hearing, which is usually scheduled 60 to 120 days after the filing deadline.

What is the common level ratio and how does it affect my appeal?

The common level ratio (CLR) is the official percentage relationship between assessed values and market values in your county, published every year by Pennsylvania's State Tax Equalization Board (STEB). If your county's CLR is 50%, a $400,000 home should be assessed at $200,000. Assessed higher than that ratio implies, and you have a strong over-assessment argument. Look up your county's current CLR before building your case.

Can the school district appeal my assessment reduction?

Yes. In Pennsylvania, taxing bodies including school districts and municipalities have the same appeal right property owners do. This is a taxing body appeal. It's most common in Allegheny County, where Pittsburgh Public Schools regularly appeals reductions. Win a reduction at the board level, and the school district can appeal that lower value to the Court of Common Pleas within 30 days of the board's decision.

What evidence do I need for a Pennsylvania property tax appeal?

Comparable sales are the most persuasive evidence: recent arm's-length sales of similar properties in your neighborhood, pulled from public county records. A licensed appraisal ($350 to $600 for residential) carries more weight but isn't required at the board level. Also bring the assessor's property record card and flag any factual errors, like wrong square footage or bathrooms that don't exist.

How long does a Pennsylvania property tax appeal take?

From filing to board decision, expect four to seven months. Most annual deadlines fall in August or September; hearings run October through December; decisions arrive by mail January through March. Appeal to the Court of Common Pleas after an unfavorable board decision and add another six to eighteen months. The timeline swings a lot by county workload.

What happens if the Board of Assessment Appeals denies my appeal?

You have 30 days from the mailing of the board's written decision to appeal to the Court of Common Pleas. That court hears the case fresh rather than reviewing the board's decision. At the court level, a licensed appraisal and often an attorney are effectively required. Some counties offer mediation before a court hearing, which can produce a faster settlement at lower cost.

Is there a Pennsylvania property tax relief program for seniors?

Yes. The Property Tax/Rent Rebate Program pays rebates of $380 to $1,000 plus possible supplements to homeowners age 65 and older, widows and widowers age 50 and older, and disabled residents 18 and older, with household income up to $35,000 (half of Social Security income is excluded). The Pennsylvania Department of Revenue runs it, funded by the Lottery and casino revenues.

What is the homestead exclusion in Pennsylvania and how do I apply?

The homestead exclusion reduces the assessed value used to calculate school district taxes for owner-occupied primary residences. The dollar amount varies by district but commonly runs $10,000 to $30,000 off your assessed value. You apply once through your county assessor's office using the Homestead/Farmstead Application. It renews automatically as long as your primary residency doesn't change.

How is Allegheny County's appeal process different from other Pennsylvania counties?

Allegheny County has an earlier deadline (March 31), uses a board called BPAAR rather than a standard Board of Assessment Appeals, and runs an active taxing body appeal program where Pittsburgh Public Schools frequently counter-appeals owner reductions. Allegheny also offers formal mediation through its Office of Property Assessments, which often resolves cases before a court hearing. The county's 2012 reassessment set values at fair market value, so the CLR is near 100%.

Do I need a lawyer to appeal my Pennsylvania property tax assessment?

Not at the board level. The Board of Assessment Appeals is built for homeowners to handle without an attorney. If your case moves to the Court of Common Pleas, legal representation becomes practically necessary. Contingency firms charge 30% to 50% of first-year savings; some attorneys offer flat-fee board representation for $500 to $1,500 if presenting alone makes you nervous.

How much does it cost to file a Pennsylvania property tax appeal?

Filing fees are set by each county and typically run $25 to $100 for residential properties. Allegheny County charges $43.50 as of 2024. Hire an appraiser and add $350 to $600. Court of Common Pleas appeals add attorney fees of roughly $2,000 to $8,000 for residential cases. At the board level, a DIY filer's out-of-pocket cost is the filing fee plus any appraisal.

Can I appeal if I recently bought the house?

Yes, and a recent purchase price is actually strong evidence of fair market value, as long as it was a genuine arm's-length transaction and not a foreclosure, estate sale, or related-party transfer. If you paid less than the assessed value implies, bring your closing disclosure to the hearing. Boards and courts treat a bona fide sale price as significant evidence of market value under Pennsylvania case law.

What is the Pennsylvania State Tax Equalization Board and why does it matter?

The State Tax Equalization Board (STEB) is the state agency that calculates and publishes the official common level ratio for every Pennsylvania county each year. The CLR it publishes is the legally recognized ratio used in appeals to test whether your property is assessed correctly against market value. Find the current CLR table on the Pennsylvania Department of Revenue website.

Sources

1. Pennsylvania Constitution, Article VIII, Section 1: All taxes shall be uniform upon the same class of subjects within the territorial limits of the authority levying the tax, establishing the uniformity clause underlying assessment appeals.
2. Pennsylvania State Tax Equalization Board, Common Level Ratio: STEB publishes the official common level ratio for each Pennsylvania county annually; the ratio is used in appeals to determine correct assessed value relative to fair market value.
3. Pennsylvania General Assembly, Consolidated County Assessment Law, 72 P.S. § 8801-C: Allegheny County operates under the Consolidated County Assessment Law, which governs its appeals procedures separately from most other counties.
4. Pennsylvania General Assembly, Fourth to Eighth Class County Assessment Law, 72 P.S. § 5453.101: Property owners have 30 days from the mailing of an assessment notice to appeal; after a Board decision, 30 days to appeal to the Court of Common Pleas.
5. Allegheny County Office of Property Assessments: Allegheny County's annual appeal deadline is March 31; the residential filing fee is $43.50; formal mediation is available through the Office of Property Assessments.
6. Pennsylvania State Board of Certified Real Estate Appraisers: Licensed certified appraisals for residential appeal purposes in Pennsylvania typically cost $350 to $600 depending on property type and complexity.
7. Pennsylvania Association of Realtors, Property Tax Resources: Residential appeal success rates at the board level are approximately 40% to 60% when appellants bring documented comparable sales evidence.
8. Pennsylvania State Tax Equalization Board, CLR Table for 2024: For the 2024 tax year, Pennsylvania county common level ratios range from under 10% in counties with very old base years to 100% in recently reassessed counties.
9. Pennsylvania Department of Education, Homestead/Farmstead Exclusion: The homestead exclusion reduces assessed value for school tax purposes for owner-occupied primary residences; the dollar exclusion amount varies by school district.
10. Pennsylvania Department of Revenue, Property Tax/Rent Rebate Program: The Property Tax/Rent Rebate Program provides rebates of $380 to $1,000 to eligible homeowners 65 and older, widows/widowers 50 and older, and disabled residents 18 and older with household income up to $35,000.
11. Philadelphia Office of Property Assessment, Appeal Process: Philadelphia requires a First Level Review before a formal Board of Revision of Taxes hearing; the annual appeal deadline is the first Monday in October.