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Pennsylvania Property Tax Appeal Guide: How to Lower Your Assessment in 2026

Published September 5, 2026 · Updated September 5, 2026 · by John Smart (A.I. Certified Agent, eXp Realty)

If your home's assessed value is higher than its market value, you could be paying more in property taxes than you should. This guide walks you through the process of appealing your property tax assessment in Pennsylvania, with county-specific deadlines and strategies for Philadelphia, Montgomery, Bucks, Chester, Delaware, and Berks Counties.

Complete Step-by-Step Guide Updated for 2026 6 Counties Covered

Property taxes are one of the largest recurring expenses of homeownership in Pennsylvania. Yet many homeowners are paying more than they should because their property's assessed value does not reflect its actual market value. The good news is that Pennsylvania law gives every property owner the right to appeal their assessment. With the right preparation, a successful appeal can save you hundreds or even thousands of dollars per year.

This guide covers the entire property tax appeal process for southeastern Pennsylvania, including county-specific deadlines, the role of the Common Level Ratio (CLR), what evidence you need to gather, how to file your appeal, what to expect at the hearing, and what to do if your appeal is denied. Whether you own a home in Philadelphia, a suburban property in Montgomery or Bucks County, or a rural property in Berks County, the process follows the same core structure with a few important local variations.

Last Updated: August 2026

Property tax laws, deadlines, and Common Level Ratios can change. This guide reflects the most current information available as of August 2026. Always confirm your county's specific deadline and requirements with the county Board of Assessment Appeals.

Take the Self-Assessment

What Is a Property Tax Assessment in Pennsylvania?

A property tax assessment is the dollar value your county assigns to your property for the purpose of calculating your annual property taxes. Your tax bill is determined by multiplying your assessed value by your local millage rate (the tax rate per $1,000 of assessed value). For example, a home assessed at $200,000 in a municipality with a 15-mill rate would owe $3,000 per year.

Unlike many states that conduct annual or biennial reassessments, Pennsylvania operates on a base-year assessment system. Most counties last performed a countywide reassessment decades ago. Philadelphia's last citywide reassessment was in 2014. Montgomery County's base year is 2015. Chester County's base year is 2013. This means the assessed value on your tax bill may not reflect what your home is worth in today's market.

Assessed Value vs. Market Value

The key to a successful property tax appeal is understanding the difference between assessed value and market value. Your assessed value is the county's valuation based on its base-year standards. Your market value is what your home would sell for today in the current real estate market. When your assessed value exceeds your propertys fair market value, you may be over-assessed and paying too much in property taxes.

Key Insight: The goal of a property tax appeal is not to change your tax rate. It is to correct your assessed value so that it fairly reflects your propertys actual market value.

The Common Level Ratio (CLR) Explained

The Common Level Ratio (CLR) is a critical concept for Pennsylvania property tax appeals. Published annually by the Pennsylvania State Tax Equalization Board (PA STEB), the CLR represents the median ratio of assessed values to actual sale prices for properties sold in your county. It tells you, on average, what percentage of market value your county's assessments represent.

For example, if your county has a CLR of 70%, it means that the typical property in your county is assessed at 70% of its market value. If your home has a market value of $300,000 and is assessed at $240,000, you are actually above the county average (80% ratio vs. 70% CLR), and you may have grounds for an appeal.

CLR Example: How It Works

County CLR: 70%

Your estimated market value: $300,000

Fair assessed value (market value x CLR): $210,000

Your current assessed value: $260,000

Potential over-assessment: $50,000

At a 15-mill rate, that is $750 per year in overpaid taxes.

Philadelphia vs. Surrounding Counties: Key Differences

While the core appeal process is similar across Pennsylvania, there are important differences between Philadelphia County and the surrounding counties that every homeowner should know.

Philadelphia County

  • Appeal deadline: First Monday of October (October 5, 2026 for the 2027 tax year)
  • Appeal body: Board of Revision of Taxes (BRT)
  • Last reassessment: 2014 (Actual Value Initiative / AVI)
  • Assessment office: Office of Property Assessment
  • Appeals are filed for the following tax year

Surrounding Counties

  • Appeal deadline: August 1 (or next business day) for most counties
  • Appeal body: County Board of Assessment Appeals
  • Base years vary: Montgomery (2015), Bucks (2018), Chester (2013), Delaware (2009), Berks (2011)
  • Some counties have specific filing windows (e.g. Berks opens June 15)
  • Appeals are filed for the following tax year

County Deadlines at a Glance

Philadelphia

October 5, 2026

Montgomery

August 1, 2026

Bucks

August 3, 2026

Chester

August 3, 2026

Delaware

August 1, 2026

Berks

August 1, 2026

Deadlines shown are for the 2027 tax year appeals. Confirm with your county's official assessment office.

Steps to Appeal Your Property Tax Assessment in Pennsylvania

The appeal process follows a clear path. Follow these steps in order, and you will be well prepared to make your case.

1

Check Your Assessment and Comparable Sales

Start by reviewing your most recent property tax assessment notice, which you can find on your county assessment office's website. Look at your assessed value and compare it to what similar homes in your neighborhood have sold for recently. If your assessment seems high relative to comparable properties, you may have a strong case for an appeal.

  • Find your current assessment on your county's property search portal
  • Identify 3 to 5 comparable sales in your neighborhood from the last 6 to 12 months
  • Compare sale prices per square foot to build your evidence
  • Use our home value tool for a starting estimate of your market value
2

Know Your County's Deadline and File on Time

Deadlines are strictly enforced. Missing the deadline means waiting another full year to appeal. Mark your county's deadline on your calendar and file well before it. Each county provides specific appeal forms that must be completed and submitted to the Board of Assessment Appeals (or the Board of Revision of Taxes in Philadelphia).

Important: In Philadelphia, file your appeal with the Board of Revision of Taxes (BRT) by the first Monday of October. In Montgomery, Bucks, Chester, Delaware and Berks Counties, file with the respective County Board of Assessment Appeals by August 1 (or the next business day).

Visit your county's assessment office website for the official appeal form. Philadelphia homeowners should visit the Office of Property Assessment. Montgomery County homeowners should visit the Board of Assessment Appeals page.

3

Gather Your Evidence

Strong evidence is the foundation of a successful appeal. The more data you can provide to show that your assessment exceeds your propertys fair market value, the stronger your case. Here is what you should gather:

  • Comparable Sales (Comps): Sales of similar properties in your neighborhood from the last 6-12 months. Focus on properties similar in size, age, condition, and location.
  • Photos: Photographs of your property showing any condition issues, needed repairs, or features that reduce value compared to comps.
  • Certified Appraisal: A professional appraisal from a licensed appraiser is the strongest evidence you can submit. Expect to pay $400-$800 for a single-family home appraisal.
  • CLR Calculation: Show how the county's own Common Level Ratio supports your case using data from PA STEB.
  • Recent Purchase Price: If you bought the property within the last 12-18 months, your purchase price is strong evidence of market value.
4

Attend the Hearing

After you file your appeal, the county will schedule a hearing before the Board of Assessment Appeals. This is your opportunity to present your case in person. The hearing is relatively informal but you should be prepared.

  • Bring three copies of all your evidence (one for the board, one for the county assessor, one for yourself)
  • Be prepared to explain why your assessment is too high and present your comparable sales data clearly
  • Answer questions from the board honestly. If you do not know an answer, say so rather than guessing
  • The board typically issues a written decision within 30 days of the hearing
5

What If You Lose: Appeal to the Court of Common Pleas

If the Board of Assessment Appeals denies your appeal, you have the right to appeal further to the Pennsylvania Court of Common Pleas in your county. This is a formal legal proceeding and you may benefit from hiring an attorney who specializes in property tax appeals. The timeline extends significantly at this stage, often taking 6 to 12 months.

Before pursuing a court appeal, weigh the potential savings against the cost of legal representation and the time commitment involved. For many residential properties, the Board level provides a fair resolution without needing to go to court.

Smarty's Advice: Most successful residential appeals are won at the Board level with solid comparable sales data and a clear explanation of why the assessment is unfair. Focus on building a strong case from the start rather than counting on a court appeal later.

When It Makes Sense to Appeal

Not every property is a good candidate for an appeal. Here are the situations where appealing is most likely to succeed and deliver meaningful savings:

You Recently Purchased Your Home

Your purchase price is strong evidence. If your assessment is significantly higher than what you paid, you have a clear case.

Comparable Homes Sell for Less

Your neighbors' homes are similar to yours but selling for less than your assessed value. That is a strong argument for over-assessment.

Your Home Needs Major Repairs

A roof replacement, foundation issues, outdated systems, or water damage reduce your home's market value and strengthen your appeal.

Your County CLR Supports Your Case

If your assessed value exceeds what the CLR would predict based on your home's market value, you have a data-driven argument.

Property Values in Your Area Declined

If market conditions have pushed home values down in your neighborhood, an outdated assessment may not reflect the current market.

Your Assessment Increased Significantly

If your county updated assessments and your value jumped more than comparable properties, an appeal may correct a clear error.

When It Does Not Make Sense to Appeal

An appeal is not always the right move. Here are situations where you might want to reconsider:

Your Assessment Is Already Below Market Value

If your assessment is lower than what your home would sell for, appealing could trigger a reassessment that raises your taxes, not lowers them.

The Difference Is Too Small

A potential savings of less than $100 per year may not be worth the time, filing fees, and effort of assembling your evidence and attending a hearing.

You Have Inconsistent Evidence

Weak or contradictory data can hurt your case. Without solid comparable sales or an appraisal, you may not have enough to convince the board.

You Just Missed the Deadline

Deadlines in Pennsylvania are strict. If you missed this year's window, prepare your evidence now and file early next year. Contact John Smart for help tracking your county's specific deadline.

Frequently Asked Questions About Property Tax Appeals in Pennsylvania

Get answers to the most common questions about appealing your property tax assessment in Philadelphia and southeastern Pennsylvania.

What is a property tax assessment and how is it different from an appraisal?
A property tax assessment is the value your county assigns to your property for tax purposes. It is not the same as a market appraisal. In Pennsylvania, assessments are often based on a base-year value (the last countywide reassessment, which could be decades old), adjusted by the Common Level Ratio (CLR). An appraisal estimates what your home would sell for today. The two numbers can differ significantly, which is why appealing an assessment that exceeds your propertys fair market value can lower your tax bill.
How much can I save by appealing my property taxes?
Savings vary widely depending on your propertys assessed value, your county millage rate, and how much you lower your assessment. A reduction of $50,000 in assessed value at a 1.5% millage rate saves $750 per year. For Philadelphia homeowners, a $50,000 reduction at the current rate saves approximately $700-$800 annually. Over five years, that compounds to $3,500-$4,000. Many homeowners who successfully appeal save hundreds of dollars per year, year after year.
Do I need a lawyer to appeal my property taxes in Pennsylvania?
You are not required to have a lawyer to file a property tax appeal in Pennsylvania. Homeowners can represent themselves at the Board of Assessment Appeals hearing. However, having a real estate attorney or a qualified tax appeal consultant can improve your chances, especially if your case involves complex valuation disputes or commercial property. For most single-family homes, a well-prepared appeal with solid comparable sales data and a certified appraisal is often sufficient without legal representation.
How often can I appeal my property taxes in Pennsylvania?
In most Pennsylvania counties, you can file an annual appeal during the designated appeal window (typically June 15 to August 1). Philadelphia allows appeals on an annual basis with the deadline on the first Monday of October. You may also file a "interim" or "exception" appeal if a change in your propertys condition affects its value, such as a fire, flood, or partial demolition. If you appealed and were denied, you can try again the following year with updated comparable sales data.
How long does the property tax appeal process take in Pennsylvania?
From filing to hearing, the process typically takes 60 to 120 days. After you file by the county deadline, the Board of Assessment Appeals schedules a hearing, usually within 4 to 8 weeks. The board issues a decision within a few weeks after the hearing. If you appeal to the Court of Common Pleas, the timeline extends significantly, often 6 to 12 months. Most straightforward residential appeals are resolved at the Board level within 3 to 4 months total.
What is the Common Level Ratio (CLR) and how do I use it in my appeal?
The Common Level Ratio (CLR) is published annually by the Pennsylvania State Tax Equalization Board (STEB) for each county. It represents the median ratio of assessed values to actual sale prices for properties sold in your county. To determine if your property is over-assessed, multiply your propertys estimated market value by the CLR. If the result is significantly lower than your current assessment, you have a strong case. For example, if your county CLR is 70% and your home is worth $300,000, your fair assessment should be around $210,000. If you are assessed at $260,000, you may be over-assessed by $50,000.
Can I appeal if I bought my home recently?
Yes. A recent purchase price is often the strongest evidence for an appeal. If you bought your home within the last 12 to 18 months, the sale price is a reliable indicator of market value, and the county assessment should reflect it. Recent buyers frequently succeed in appeals because the data is current, verifiable, and hard for the assessment board to dispute.
What happens at the appeal hearing?
At the hearing, you present your case before a panel from the Board of Assessment Appeals (or the BRT in Philadelphia). Both you and the county assessor have an opportunity to present evidence. You will explain why you believe your assessment is too high, submit your comparable sales data and appraisal, and answer questions from the panel. The hearing is informal compared to a court proceeding but you should be prepared and organized. The panel typically issues a decision within 30 days.

Helpful Resources

Official Government Resources

Smarty Home Solutions Resources

County Community Guides

County Assessment Offices

John Smart, AI-Certified Agent

Written by John Smart

AI-Certified Agent with eXp Realty • PA License RS348332

Serving Philadelphia, Montgomery, Bucks, Chester, Delaware and Berks Counties since 1987

Need Help Understanding Your Home's Value Before Appealing?

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John Smart • AI-Certified Agent • Smarty@SmartyHomeSolutions.com • License RS348332 • eXp Realty

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