Why Did My Philly Property Assessment Go Up? Here's How to Appeal Before September 1.

If you opened your mailbox recently and found a Notice of Valuation from the City of Philadelphia, you're not alone, and you're probably not thrilled. The Office of Property Assessment started mailing new 2027 assessments on June 29, and the majority of homeowners are seeing values higher than the last citywide revaluation two years ago.

Here's the good news. You have options, they're free, and you don't need a lawyer in most cases. But the clock is ticking. The first deadline is September 1, 2026, and it will be here faster than you think.

Let's walk through what happened, what it means for your tax bill, and exactly what to do next.

Why did my assessment go up?

Philadelphia reassesses every property in the city on a regular cycle, more than 580,000 of them, using a computer assisted mass appraisal system that pulls from recent sales data, aerial imagery, and market trends. The goal is to keep assessed values in line with what homes are actually selling for.

And here's the thing. Philly's market has stayed strong. Home values in many neighborhoods have climbed since the last revaluation, so when the city ran the numbers again, most assessments came back higher. Citywide, the median change was around 3 percent from the 2025 tax year, but that's just the middle of the range. Plenty of homeowners in fast-appreciating neighborhoods opened notices showing much bigger jumps.

For the median-valued home, the city estimates the 2027 tax bill will go up about $97. If your assessment climbed well past the median, your increase will be bigger.

Is the city's math even right? City Council wants to know too

If your first reaction was "there's no way my house is worth that," you're in good company. City Council members are publicly pressing the Parker administration on how these numbers were calculated. Council member Mike Driscoll sent a letter to the city's Chief Assessment Officer with six pointed questions about the methodology, demanding answers by August 15. A Council hearing is expected, and the City Controller is running a performance audit of the assessment office and the appeals process. The city has also hired an independent consultant to evaluate whether this revaluation was accurate and fair.

None of that changes your assessment automatically. But it tells you something important. Even the people who run the city acknowledge the process deserves scrutiny, and assessments do contain mistakes. Which is exactly why the appeal process exists.

Your two ways to appeal, and why you should file both

You have two free options, and here's a tip most homeowners don't know. You don't have to choose. Housing attorneys in the city recommend filing both at the same time.

Option 1: First Level Review (FLR), deadline September 1, 2026

This is the informal route. You're asking the Office of Property Assessment to take a second look. There's no hearing. You fill out the FLR form that came in the envelope with your Notice of Valuation, attach your supporting documents, and submit it by Tuesday, September 1. Lost the form? Download a replacement from the city's First Level Review forms page.

To win an FLR, you need to show at least one of these:

• Your valuation is too high, or the property characteristics the city has on file are substantially wrong. Think incorrect square footage, wrong number of bathrooms, or a "finished basement" that's actually bare concrete.
• Your assessment is not uniform with similar properties. If the rowhomes on your block with the same footprint are assessed for less, that's evidence.
• An exemption or abatement on your property is missing or incorrect.

Option 2: Formal appeal with the Board of Revision of Taxes (BRT), deadline October 5, 2026

This is the formal route, and it comes with an actual hearing where you make your case to an independent board. Grab the BRT appeal forms here and review the full appeal instructions. You can submit in person, by mail, or by email to [email protected].

Fair warning, it takes patience. Some cases run a year or more. While you wait, keep paying your taxes based on the prior assessment. The worst move is paying nothing, which can put your home at risk regardless of how the appeal turns out.

What evidence actually wins appeals

Whether you file an FLR, a BRT appeal, or both, your case is only as strong as your paperwork. Here's what to gather:

• A recent appraisal, if you have one from a refinance or purchase in the last year or two.
• Comparable sales. Pull three to five recent sales of similar homes near you. Look for the same style, similar square footage, and similar condition.
• Photos of your home's condition. If your property needs a new roof, has water damage, or hasn't been updated since the Clinton administration, document it. The city's mass appraisal model can't see inside your house.
• Your property record at property.phila.gov. Check every detail. Wrong lot size, wrong building description, and phantom renovations are more common than you'd think.

Can't make the value argument? You can still lower your bill

Even if your assessment is accurate, Philly offers real relief programs, and the city is actively pushing homeowners to use them:

• Homestead Exemption. Every owner-occupant qualifies, no income limits. For 2027 it knocks $100,000 off your taxable value, saving most homeowners $1,399 a year. If you're not enrolled, this is the single easiest money you'll ever save. Apply by December 1, 2026.
• LOOP (Longtime Owner Occupants Program). If you've owned and lived in your home for 10 or more years, your assessment spiked at least 50 percent in one year or 75 percent over five years, and you meet income limits, LOOP caps your taxable value. Note that you can't have LOOP and the Homestead Exemption at the same time, so run the numbers on both.
• Senior Citizen Tax Freeze. Homeowners 65 and older with income under $33,500 (single) or $41,500 (married) can freeze their tax bill permanently, even if assessments or rates rise later.
• Low-Income Tax Freeze. Similar concept without the age requirement, and you can stack it with the Homestead Exemption.

You can apply for multiple programs at once through the combined application on the Philadelphia Tax Center, and it will tell you which ones you qualify for.

Bookmark these official links

• Check your new assessment and property record: property.phila.gov
• First Level Review forms (informal appeal, due September 1): phila.gov FLR forms
• How assessments and FLRs work: Office of Property Assessment
• Formal appeal forms (due October 5): Board of Revision of Taxes appeal forms
• Formal appeal process and hearing info: BRT property assessment appeals
• Apply for tax relief programs in one application: Philadelphia Tax Center
• Free legal help with assessments and appeals: Community Legal Services

Key dates to put in your phone right now

• September 1, 2026: First Level Review deadline
• October 5, 2026: Formal BRT appeal deadline
• December 1, 2026: Homestead Exemption deadline, and tax bills start mailing
• January 1, 2027: New assessments take effect
• March 31, 2027: 2027 Real Estate Tax due

The bottom line

A higher assessment isn't a final verdict. It's the city's opinion of your home's value, and opinions can be challenged, especially when City Council itself is questioning the methodology. File your First Level Review before September 1, file the BRT appeal as a backup, gather your comps, and make sure you're enrolled in every relief program you qualify for.

And if you're wondering what your new assessment says about your home's actual market value, that's a conversation worth having. Sometimes an assessment jump is a headache. Sometimes it's a signal that your equity has grown more than you realized. If you'd like a real-world market analysis of what your home would sell for today, whether you're in Philly proper or out in the PA or South Jersey suburbs, reach out. I'm happy to pull the numbers, no strings attached.

Frequently asked questions

How do I appeal my Philadelphia property assessment?

File a free First Level Review with the Office of Property Assessment by September 1, 2026, using the form mailed with your Notice of Valuation. You can also file a formal appeal with the Board of Revision of Taxes by October 5, 2026. Experts recommend filing both at the same time. Neither requires an attorney.

Why did my Philadelphia property assessment go up for 2027?

The city reassessed all 580,000+ properties to match current market values, and home prices have risen in most neighborhoods since the last revaluation. The citywide median change was about 3 percent, though many neighborhoods saw larger increases.

What is the deadline to appeal a Philadelphia property assessment?

Two deadlines matter: September 1, 2026 for the informal First Level Review with the OPA, and October 5, 2026 for a formal appeal with the Board of Revision of Taxes.

How much will my Philadelphia property taxes go up in 2027?

The city estimates the median residential tax bill will rise about $97. Your actual change depends on your new assessed value and whether you're enrolled in relief programs like the Homestead Exemption, which saves most homeowners $1,399 per year.

Do I need a lawyer to appeal my Philly property assessment?

No. Both the First Level Review and the BRT formal appeal are free and designed for homeowners to file themselves. Strong evidence like comparable sales, photos, and a recent appraisal matters more than legal representation for most residential appeals.

This post is for general information, not legal or tax advice. For complex appeals, consider consulting a real estate attorney or Community Legal Services.