Property tax liens can follow the property, not just the owner. If you're buying in Philadelphia and you skip the delinquency check, you could inherit someone else's debt, lose the property to a sheriff sale, or find yourself tangled in a city enforcement action you didn't create.
Philadelphia has one of the highest rates of property tax delinquency of any major American city. At any given time, tens of thousands of properties owe back taxes to the city, some by a few hundred dollars, some by six figures. Many of those properties quietly change hands, and buyers who don't check find out the hard way.
This guide explains what tax delinquency means in Philadelphia, how to look it up for any address, what OPA and BRT records tell you, and how to protect yourself if you're buying a property that carries a lien.
A property is considered tax delinquent when its owner has failed to pay property taxes owed to the City of Philadelphia by the due date. Philadelphia's property tax (known as the Real Estate Tax) is billed annually. The standard deadline is March 31. Payments received after that date accrue interest and penalty charges.
Once a property falls far enough behind, typically one year or more, the city can pursue enforcement, which ultimately means a sheriff sale: a public auction at which the city forces the sale of the property to satisfy the outstanding debt.
Here's the key legal point: in Pennsylvania, real estate tax liens are super-priority liens. They outrank almost everything else, including mortgages. If you buy a property without discovering a tax lien, you may be legally responsible for paying it. The lien doesn't disappear at settlement unless it's specifically paid off.
Pennsylvania law treats real estate tax liens as super-priority. They survive the sale of a property. If you close on a delinquent property without resolving the lien, you inherit it, and the city will come after you (or the property) to collect.
The city mails the tax bill in December for the following year. If it's unpaid by March 31, interest starts accruing (currently 1.5% per month) plus a 10% penalty on the overdue amount. The city will send reminder notices, but many delinquent owners simply ignore them.
The Department of Revenue can file a tax lien with the Philadelphia Court of Common Pleas. This officially clouds the title. The city may also refer the account to the Law Department for legal action and post a delinquency notice on the property.
Properties that remain delinquent for three or more years (sometimes sooner with large balances) can be scheduled for sheriff sale. Philadelphia's Sheriff's Office publishes a list of upcoming sheriff sales, and these are publicly accessible and updated regularly. Once a property is listed, it typically goes to auction unless the owner pays the full delinquent amount or enters into a payment plan.
A sheriff sale is a public auction held monthly at City Hall. The opening bid is typically set at the amount owed (taxes + interest + penalties + city fees). If no one bids, the city takes ownership. If a third party bids and wins, they receive a sheriff's deed, which can clear some (but not always all) prior claims. Title insurance is strongly recommended for any property purchased at sheriff sale.
There are three main ways to check any Philadelphia address for outstanding tax debt. Each gives you different information.
The OPA maintains the assessment database at property.phila.gov. Enter any address to see the assessed value, tax year, and whether taxes are paid or outstanding. The OPA record won't give you the full delinquency breakdown, but it will flag accounts with unpaid balances.
The most complete source. Go to secure.phila.gov/PaymentCenter/AccountLookup.aspx or the Revenue Department's Real Estate Tax portal. Enter the property's OPA account number (visible on property.phila.gov) to see the full payment history, current balance due, interest, penalties, and any active payment agreements.
The BRT handles tax appeals and assessment disputes. If a property has an active appeal or a reduced assessment in process, the BRT record may differ from what OPA shows. For contested properties, check both. BRT records are available at brt.phila.gov.
If you want to check whether a specific property is headed to sheriff sale, search the Sheriff's upcoming sales list at officeofphiladelphiasheriff.com. Listings are published 30 days before the scheduled sale date.
| Source | What it shows | URL |
|---|---|---|
| OPA | Assessed value, payment status, OPA account # | property.phila.gov |
| Revenue Dept | Full balance, interest, penalty, payment agreements | secure.phila.gov/PaymentCenter/AccountLookup.aspx |
| BRT | Active appeals, assessment disputes | brt.phila.gov |
| Sheriff's Office | Upcoming sheriff sales (30-day advance notice) | officeofphiladelphiasheriff.com |
When a property has multiple claims against it (mortgage, tax lien, contractor mechanic's lien, water/sewer debt), the order in which those creditors get paid matters enormously. Pennsylvania's lien priority rules follow a specific hierarchy.
This means that even if a seller has a mortgage, the city's tax lien gets paid first from any sale proceeds. If the combined delinquency plus enforcement costs exceeds the property's value, the mortgage lender may be wiped out, and at a sheriff sale, the lender often can't recover the full loan balance.
Philadelphia Water Department (PWD) charges, like real estate taxes, carry super-priority lien status in Pennsylvania. A property can owe thousands in water/sewer debt that acts like a tax lien. Always check PWD delinquency separately at phila.gov/departments/philadelphia-water-department/.
If your title search or due diligence turns up a tax lien, you have options, but you need to act deliberately. Here's how to handle it.
The cleanest path. Make the offer contingent on the seller paying off all outstanding tax liens at or before settlement. Your title company will verify the payoff amount and ensure it's applied before the deed transfers. This is standard practice for routine transactions.
If the seller can't pay off the lien but it's manageable, you can negotiate a reduction in the purchase price to account for the debt you'll assume. Multiply the delinquency by 1.2 to estimate the real cost (taxes + interest + city legal fees by the time of closing).
If you already own and occupy the property, the city's Owner-Occupied Payment Agreement (OOPA) lets you enter a structured repayment plan for delinquent taxes. Income-based caps apply; some homeowners pay as little as 0.5% of income toward the tax debt. OOPA stops the sheriff sale clock and is the primary tool for homeowners facing enforcement.
Note: the Longtime Owner Occupants Program (LOOP) is a separate program that provides property tax relief to homeowners who have lived in their home for 10+ years and meet income thresholds. LOOP is not a payment plan for delinquent taxes, and it is not available to buyers of delinquent properties; it is a tax-reduction benefit for qualifying long-term owner-occupants.
Bidding at a Philadelphia sheriff sale lets you acquire a property for close to the delinquency amount, sometimes far below market value. The risks are real: no interior inspection rights, possible additional liens (mechanic's, judgment) not cleared by the tax sale, and title insurance that may be difficult to obtain without a "quiet title" action. This is an advanced investor strategy, not a typical homebuyer path.
In Pennsylvania, a tax sale clears the tax lien that triggered the sale, but it does not automatically clear all prior liens. Depending on the type of sale and the lien structure, mechanic's liens, judgment liens, and water/sewer debts may survive. Always get title insurance and consult a real estate attorney for any sheriff sale purchase.
These two Philadelphia agencies both deal with property taxes, but they serve different functions, and buyers often confuse them.
The OPA sets the assessed value of every property in Philadelphia. Your real estate tax bill is calculated as: assessed value × 1.3998% (as of FY2025; verify current rate at phila.gov). The OPA maintains the official property database, which is public and searchable. OPA records include ownership information, land/building breakdown, zoning, homestead exemption status, and the current assessed value.
Critically, OPA records reflect the assessment, not whether taxes have been paid. A property can have a perfectly up-to-date OPA record and still owe back taxes.
The BRT is the independent appeals body for property owners who dispute the OPA's assessed value. If you believe your property is over-assessed (and in Philadelphia, many are), you file an appeal with the BRT. The BRT holds hearings and can lower the assessed value, which lowers future tax bills, but doesn't change what was already owed.
For buyers, the BRT matters when a property has a pending appeal at the time of sale. If the BRT subsequently reduces the assessed value, the tax savings flow to whoever owns the property at that time, which could be you. Some savvy buyers factor an existing BRT appeal into their offer.
The scale of delinquency in Philadelphia is significant. The city regularly carries hundreds of millions of dollars in uncollected property tax debt. Certain neighborhoods, particularly those that experienced rapid disinvestment in the 1970s and 1980s, have high concentrations of delinquent properties. North Philadelphia, West Philadelphia, and parts of Kensington have historically had some of the city's highest delinquency rates.
The city uses a combination of its own Revenue Department enforcement, contracts with outside collectors, and the sheriff sale process to pursue collection. In recent years, Philadelphia has also piloted land bank programs to address properties where the tax debt exceeds market value, effectively forgiving the debt in exchange for rehabilitation commitments.
When reviewing a property's tax history, these patterns suggest elevated risk:
Checking a Philadelphia property's tax status manually means navigating at least three separate city portals (OPA, the Revenue Department, and the BRT), plus cross-referencing the sheriff's sale list. Most buyers never do all four.
Flagstone pulls ownership data from the OPA's public database as part of every property report, including assessed value, market value, tax year, and homestead exemption status. Combined with our violations, permits, and 311 analysis, you get a complete picture of a property's risk profile before you make an offer.
We're also building direct tax delinquency status into Flagstone reports, so you'll see the payment status alongside everything else. Sign up for early access to get notified when that launches.
✓ Look up OPA record (property.phila.gov): check assessed value and OPA account number
✓ Check full tax balance (secure.phila.gov/PaymentCenter/AccountLookup.aspx): enter OPA account number
✓ Check water/sewer balance (phila.gov/departments/philadelphia-water-department/): separate from real estate tax
✓ Search sheriff's upcoming sales list (officeofphiladelphiasheriff.com): confirm property isn't listed
✓ Check BRT for active appeals (brt.phila.gov): could affect future tax bill
✓ Run a Flagstone report: violations, permits, 311, and OPA data in one place
Philadelphia property tax delinquency is common, legally consequential, and surprisingly easy to miss if you don't know where to look. The lien follows the property. It outranks your mortgage. And the city has the legal authority to take the property and sell it if the debt isn't resolved.
A thorough delinquency check costs nothing and takes fifteen minutes across the four city portals listed above. Skip it, and you're gambling with a super-priority lien that could cost you far more than the property is worth.
Flagstone pulls OPA data, L&I violations, permits, and 311 complaints into one plain-English property report, in under 60 seconds.
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