There's a quiet myth that challenging your Philadelphia assessment requires a lawyer on retainer. It doesn't. The appeal process was built for ordinary owners to use directly — and the one genuinely hard part is research you can now hand to software.
Philadelphia's assessment system is designed so that any property owner can question the number the city put on their home. Assessments come from the Office of Property Assessment (OPA), which uses mass appraisal — a statistical model applied to hundreds of thousands of parcels at once. Because it's a model, it misses things: a recent sale down the block, a leaking roof, a wrong square-footage figure in the record. Correcting those is your right, and you exercise it through two channels that both accept filings directly from owners.
The first is an informal First Level Review (FLR) — a request that OPA take a second look at your number. The second is a formal appeal to the Board of Revision of Taxes (BRT). Neither requires an attorney for a residential property. You fill out a form, attach your evidence, and submit it before the deadline. Thousands of Philadelphia homeowners do exactly this every year without ever hiring anyone.
It helps to be precise about what you'd be paying a professional for. In a residential appeal, a lawyer or consultant is not arguing constitutional law in front of a judge. They are doing three concrete things: pulling your property's official record, finding sales of comparable homes, and arranging that material into the format the Board reviews. That's the work.
None of these tasks require a law degree. What they require is access to good sales data and the patience to line it up correctly. If you have that, you have everything a professional would bring to a routine residential appeal.
The value of a lawyer on a simple residential appeal isn't legal expertise — it's the research and formatting. And that's precisely the part you can automate.
You don't need to master the whole system to appeal successfully. The process breaks into a few plain steps, each of which has its own detailed guide:
Every step above is manageable except one: assembling comparable sales that actually hold up. It's easy to grab a handful of nearby sales; it's much harder to pick the ones that are truly comparable in size, age, condition, and recency — and to avoid the traps, like leaning on a renovated flip or a sale from three years ago. Do it badly and the Board isn't persuaded. Do it well and a residential appeal is often straightforward.
This is exactly the gap TaxAssessmentIQ was built to close. It pulls your live OPA record, surfaces the real comparable sales that support a lower value, tells you honestly whether the gap is worth appealing, and generates a BRT-ready packet. You still file it yourself — copy, paste, sign, stamp, send — but the research a firm would charge you for is already done. No contingency fee, no share of your savings.
DIY is the right call for most homeowners, but not everyone. If your property is a large commercial building, part of a multi-property portfolio, or involves an income-based valuation dispute, the analysis gets more specialized and the dollars at stake can justify professional representation. The same is true if a case looks headed for litigation beyond the Board. For a single owner-occupied rowhome or twin, though, the cost of hiring out usually outweighs the benefit — which is worth understanding before you sign anything. We break the numbers down in what appeal lawyers and consultants cost.
The honest bottom line: no tool and no lawyer can guarantee an appeal will win. What you can control is filing a well-evidenced, correctly formatted case on time. Do that, and you keep 100% of any savings that follow — every year they recur.
Yes. Property owners can file both a First Level Review with the Office of Property Assessment and a formal appeal to the Board of Revision of Taxes themselves. No attorney is required for a residential appeal.
For a straightforward residential appeal, mostly the research and formatting — pulling your record, selecting comparable sales, and packaging the argument. Those are exactly the tasks that software can now do for you. Lawyers add the most value in complex commercial cases or contested litigation.
Finding genuinely comparable sales and presenting them in the format the Board expects. The forms and deadlines are simple by comparison; the evidence is where most owners get stuck, which is the part TaxAssessmentIQ automates.
When the property is a large commercial building, part of a portfolio, involves an income-based valuation dispute, or is likely to end up in litigation. For a single owner-occupied home, the math usually favors doing it yourself.
No. No tool or lawyer can guarantee an outcome. What good research does is tell you honestly whether the gap is worth appealing and give the Board a clean, well-evidenced case to consider.
TaxAssessmentIQ gives you a free, honest verdict from the City's own recorded sales — just enter your address, no sign-up and no account. If your home looks over-assessed, you can get a ready-to-file appeal packet for a flat, one-time price, backed by a money-back guarantee. If it isn't worth filing, we tell you that too — for free, before you pay anything.