The assessment notice that lands in your mailbox each year is not junk mail. It is the single document that sets your property tax bill — and it is written in a way that makes it easy to skim past the parts that matter most. Here is how to read it line by line.
Philadelphia does not tax your home based on what you paid for it or what you think it is worth. It taxes the market value the Office of Property Assessment (OPA) assigns through mass appraisal — a model applied across every parcel in the city at once. That value is printed on your notice, and your tax is a fixed percentage of it. If the value is too high, you overpay every year until you do something about it. Reading the notice carefully is the first, free step in catching that.
Find the assessed market value — the headline number. This is the OPA's estimate of what your property would sell for. Ask yourself one blunt question: could you actually sell your home for this today? If the figure feels high relative to what similar homes on your block have been trading for, that instinct is the seed of an appeal. To turn instinct into evidence, you compare it against real comparable sales.
Your notice may show the value without spelling out the arithmetic, so here it is. Philadelphia applies a total effective rate of about 1.3998% of assessed market value — a combined City and School District rate — after exemptions are subtracted. So a home assessed at, for example, $300,000 with no exemptions carries roughly $4,199 in annual tax; drop the assessment and the bill drops with it. We break the formula down in detail in how Philadelphia property taxes are calculated.
The market value is the only number on the notice you can actually challenge — and it is the one that drives everything else.
The notice reflects reductions applied to your account. The most common is the Homestead Exemption, which lowers the taxable portion of your assessed value by a fixed amount for owner-occupants. If you live in the home and see no homestead reduction, you may simply not be enrolled — worth fixing, because it stacks with an appeal rather than replacing it. Do not rely on a remembered dollar figure for the exemption; the amount changes, so confirm the current one at phila.gov. Older or income-qualified owners may also see reductions from programs like LOOP or the Senior Tax Freeze. We compare these levers in Homestead Exemption vs. appeal.
Tucked below the value, the notice (or the linked OPA record) lists the characteristics the model used: living area in square feet, year built, construction type, number of stories and units, and lot size. These are worth a careful look, because the model set your value from them. Overstated square footage, a phantom extra unit, or the wrong lot size can inflate your assessment through no fault of the market. Compare each line against what you know about your home:
Any discrepancy is potential appeal evidence in its own right, separate from the comps argument. Gather it the way we describe in the evidence guide.
Your notice prints the dates that apply to your assessment. Two appeal paths follow from it: an informal First Level Review with the OPA, whose deadline is printed on the notice, and a formal appeal to the Board of Revision of Taxes, whose deadline is generally the first Monday in October of the year before the tax year. These dates shift from year to year, and the First Level Review cutoff is usually earlier than the BRT one. Do not trust a date you saw in an old article — read it off the notice in front of you, and confirm the current BRT date on the Board of Revision of Taxes site.
When the notice arrives, do four things before you file it away: read the market value and gut-check it against your block; scan the property details for factual errors; confirm your exemptions are applied; and write the printed deadlines on your calendar. That ten-minute pass tells you whether you have a case — and TaxAssessmentIQ can confirm it instantly by pulling your live OPA record, checking it against real comparable sales, and telling you whether the gap is worth an appeal. If it is, the next stop is deciding whether your home is over-assessed in earnest.
The market value the OPA has assigned to your property. Your tax bill is calculated from it, and it is the number an appeal challenges. Everything else on the notice either feeds into it or flows from it.
Philadelphia applies a total effective rate of about 1.3998% of your assessed market value, after any exemptions are subtracted. That combined City and School District rate turns your assessed value into your annual tax.
The notice prints the dates that apply to your assessment, including the First Level Review deadline. Because these dates change from year to year, read them off your own notice rather than relying on a date you saw elsewhere.
Yes. Square footage, unit count, and lot size feed the model that set your value. If any are overstated, that error may have inflated your assessment and can support an appeal.
It generally reflects exemptions applied to your account. If you own and occupy the home but see no homestead reduction, you may not be enrolled — check your status and the current amount at phila.gov.
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.