Philadelphia Assessment Appeal Appraisal Before October 5

The Philadelphia assessment appeal appraisal question comes up every September for one reason. Monday, October 5, 2026 is the last day to file a tax year 2027 market value appeal with the Board of Revision of Taxes. The First Level Review window at the Office of Property Assessment closed on September 1. For most owners, the formal BRT appeal is the only door still open.

Here is the part that trips people up. October 5 is a filing deadline, not an appraisal deadline. Under the BRT rules, most supporting documents can be filed later. That sounds like breathing room. In practice it is a trap for anyone who files first and thinks about evidence second.

By the end of this article, you’ll know:

• What the October 5 deadline covers, and the three narrow exceptions to it
• What the Board expects from an appraisal report and from the owner, by property type
• Why ordering the appraisal before you file is the safer sequence, and what to do this week

What the first Monday of October actually covers

The rule is simple. A market value appeal must be filed with the BRT no later than the first Monday of October in the year before the tax year being appealed. For 2027 values, that is October 5, 2026.

There are three narrow exceptions. A new owner who takes title after the deadline and before December 31 gets 30 days from the deed. An owner whose assessment notice is dated after the deadline gets 30 days from the notice. A buyer under an agreement of sale signed in that same window gets 30 days from signing. Outside those, a late filing needs a nunc pro tunc petition. The Board can consider one, but it is a request, not a right.

You can file by mail, in person at 601 Walnut Street, Suite 325 East, or by emailing the PDF form to appealinquiry@phila.gov. Email gives you a timestamp. Mail does not.

Once the appeal is in, the Board sends a hearing notice roughly 45 to 90 days ahead of the hearing date. The property documents the rules require can be attached to the application or filed within 45 days of that hearing date. An appraisal report from an expert witness rides on the same clock.

Why the appraisal should still be done before you file

So the rules give you time to get the Philadelphia assessment appeal appraisal done later. Four reasons not to take it.

You are stating a position. A BRT appeal has to prove one of three things: the value is too high or too low, it is not uniform with similar properties nearby, or the recorded characteristics are substantially wrong. You only know which argument you have once someone has valued the property against the market. File on a hunch and hope the appraisal lands where you need it, and you get the appeal that quietly gets withdrawn in December. The Board sees the same attorneys every year. It remembers.

A waived hearing compresses the clock. If the owner waives the oral hearing, any additional evidence is due within 20 days of filing. The appraisal still has to meet the expert report rules. Twenty days in October is not enough time to start a narrative report from zero.

The report the Board wants is not a quick one. Rule 7 spells it out. A full narrative appraisal report prepared in conformity with USPAP. Three hard copies and one electronic copy. A summary of the appraiser’s qualifications. Proof of compliance with Pennsylvania real estate licensing. A written statement that the appraiser has no financial interest in the property and that the fee is not contingent on the outcome. The rules also say the property information should be contained in a report prepared by an appraiser certified by the Commonwealth of Pennsylvania. Narrative reports take weeks. Rule 8 adds the consequence: failure to produce documents or to strictly comply can be grounds for denial.

Your appraiser is already booked. Every property tax attorney in the city is working the same date. Inspections need scheduling. Rent rolls and two years of income and expense statements have to come from the client before the report can be finished. Clients are slow in September. Appraisers are not the bottleneck. The paperwork behind them is.

What the Board wants to see, by property type

Rule 6 lists the documents by category. The short version:

• Owner-occupied home. Photos of the front, rear, sides, and street view. Anything else the owner wants considered. An appraisal is not required here, but it changes the conversation from opinion to evidence.
• Owner-occupied commercial or industrial. Two years of operating expenses with explanations, the same photo set, and a plan locating every building on the site.
• Leased property, four or fewer tenants. Executed leases with every amendment and rider, two years of income and expense statements, photos. Industrial adds the building plan and site layout.
• Five or more tenants. A typical residential lease plus all commercial leases, a current rent roll with square footage, lease terms, rents, and other revenue, two years of income and expense statements, photos, and a plot plan.
• Office buildings and shopping centers. Their own lists, built around the rent roll, pass-throughs, and two years of income and expense.

For every category above the owner-occupied home, the rules repeat the same line: it is suggested this information be contained in an appraisal report prepared by a Pennsylvania certified appraiser. Read that as a strong hint about how the Board prefers to receive it.

If you own or advise on an income property, the useful move this week is boring. Pull the last two years of income and expense statements, the current rent roll, and every lease with its amendments. Send them to the attorney and the appraiser at the same time. The Board requires them regardless, and the appraiser cannot finish without them.

What an over-assessment costs

The Real Estate Tax rate is 1.3998%, split between the City at 0.6159% and the School District at 0.7839%. It has not changed since 2016 and stays the same for 2027. So every $100,000 of over-assessment costs roughly $1,400 a year. On a $1,000,000 gap, that is about $14,000 a year, every year, until someone fixes it.

The 2027 values came out of a citywide revaluation. OPA mailed notices starting June 29 and says its computer assisted mass appraisal system reviewed more than 580,000 properties. Mass appraisal is good at the average property. It is not built to see the vacancy on the second floor, the lease that rolls in March, or the roof that failed in February. That gap is where a property-specific appraisal earns its fee.

A working timeline from here

Between now and October 5, the sequence that works looks like this. Order the appraisal now, not after filing. Get the client’s documents moving the same day. File the application before October 5, by email so there is proof. Calendar the 20-day window if the hearing is waived and the 45-day window if it is not. Decide with counsel whether a hearing helps or hurts on this particular file.

One line we hold. Whether to file, and on which ground, is the attorney’s call. What the property is worth, and whether the assessment holds up against the market, is the appraiser’s job. We stay on our side of that line, and we put the support in the report so you do not have to argue it from memory.

Appraisal Support for Philadelphia Assessment Appeals

Philadelphia is one of the five markets PahRoo Appraisal & Consultancy serves, alongside Chicago and Cook County, Dallas-Fort Worth, Phoenix, and Naples, and property tax appeal work is part of that commitment. Our MAI and SRA designated team prepares appraisals for owners, attorneys, and CPAs across our appraisal service lines, and our Philadelphia page covers the neighborhoods and property types we handle. Michael Hobbs, MAI, SRA, signs every report and is available for testimony. To discuss a Philadelphia file before the filing date, contact our team.