2026 taxable assessment $0 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $91,000; it is not the 2026 billed-year value.
Land report
527 W Montgomery Ave
Vacant lot · Philadelphia Land Bank · fully tax-exempt (2026 OPA). On the 500 block of W Montgomery Ave.
Property summary
Assessment$106,7002026 OPA assessment · 2027: $91,000
Last sale$14KRecorded 2018
Est. tax bill$0/year2026 OPA · full assessment exemption shown
Tax delinquency—Snapshot unavailable
Permits0Dated events in report
Violations0 openNo historical match in fetched records
“Open” reflects records available then historical records keep their source dates estimates are labeled
BlockReport AI · cited public records
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Property tax
The estimate, live balance, and back-tax record are different.
BlockReport can calculate the annual tax from the City’s taxable assessment. Payments, credits, interest, and a current amount due live separately in Philadelphia Tax Center.
A Tax Center balance is net of bills, payments, credits, interest, and adjustments. A credit—or an amount due—is not automatically “back taxes.”
OPA 1830302002026 OPA shows a zero or de minimis taxable assessment. The open assessment split does not establish the exemption's legal basis, continuing eligibility, or treatment after a transfer.
Historical delinquency sources Record found
The June 2022 delinquency snapshot was not verifiably available in this cached report. No conclusion about a match—or today’s balance—can be drawn from that absence.
A separate historical parcel ledger ending in 2016 records $13,177.08 and a lien entry. It is shown as historical context only.
1978$1,658.38 total · $231.99 principal · $664.65 interest · $16.24 penalty1979$905.46 total · $231.99 principal · $650.73 interest · $16.24 penalty1980$931.10 total · $241.44 principal · $662.76 interest · $16.90 penalty1981$1,001.02 total · $263.92 principal · $708.63 interest · $18.47 penalty1982$985.18 total · $263.92 principal · $692.79 interest · $18.47 penalty1983$579.89 total · $156.78 principal · $402.14 interest · $10.97 penalty1984$593.94 total · $163.34 principal · $409.17 interest · $11.43 penalty1985$584.11 total · $163.33 principal · $399.35 interest · $11.43 penalty1986$529.50 total · $150.36 principal · $358.61 interest · $10.53 penalty1987$506.14 total · $146.14 principal · $339.77 interest · $10.23 penalty1988$468.70 total · $137.54 principal · $311.53 interest · $9.63 penalty1989$457.26 total · $136.57 principal · $301.13 interest · $9.56 penalty1990$560.82 total · $144.72 principal · $310.42 interest · $10.13 penalty1991$577.89 total · $152.06 principal · $317.04 interest · $10.64 penalty1992$578.93 total · $152.06 principal · $307.92 interest · $10.64 penalty1993$110.77 total · $24.34 principal · $47.83 interest · $1.70 penalty1994$109.01 total · $24.33 principal · $46.35 interest · $1.70 penalty1995$107.25 total · $24.32 principal · $44.87 interest · $1.70 penalty1996$105.56 total · $24.33 principal · $43.43 interest · $1.70 penalty1997$103.84 total · $24.33 principal · $41.97 interest · $1.70 penalty1998$101.26 total · $24.33 principal · $39.78 interest · $1.70 penalty1999$98.67 total · $24.33 principal · $37.59 interest · $1.70 penalty2000$96.09 total · $24.33 principal · $35.40 interest · $1.70 penalty2001$93.50 total · $24.33 principal · $33.21 interest · $1.70 penalty2002$90.92 total · $24.33 principal · $31.02 interest · $1.70 penalty2003$88.33 total · $24.33 principal · $28.83 interest · $1.70 penalty2004$85.75 total · $24.33 principal · $26.64 interest · $1.70 penalty2005$83.17 total · $24.33 principal · $24.45 interest · $1.70 penalty2006$80.58 total · $24.33 principal · $22.26 interest · $1.70 penalty2007$78.00 total · $24.33 principal · $20.07 interest · $1.70 penalty2008$81.90 total · $27.37 principal · $20.12 interest · $1.92 penalty2009$79.00 total · $27.37 principal · $17.66 interest · $1.92 penalty2010$76.10 total · $27.37 principal · $15.20 interest · $1.92 penalty2011$78.09 total · $30.08 principal · $13.99 interest · $2.11 penalty2012$76.85 total · $31.23 principal · $11.71 interest · $2.19 penalty2013$75.34 total · $32.36 principal · $9.22 interest · $2.27 penalty2014$133.42 total · $89.38 principal · $17.43 interest · $6.26 penalty2015$123.92 total · $89.38 principal · $9.38 interest · $6.26 penalty2016$101.44 total · $93.37 principal · $1.40 interest · $0.93 penalty
For a purchase, refinance, or closing, request the City’s official Property Payoff statement in Tax Center under “More options.”
What stands out
From the public recordHistory
Why it mattersL&I violation (2008); L&I violation (2025); L&I: 1 failed, 1 passed (2025).
View supporting records →Legal due diligence
What this record proves—and what it does not.
These checks are triggered by this property’s actual City rows. They identify the controlling document to verify; they do not declare a use legal, a building safe, or title clear.
1 verify
VerifyOPA shows a full exemption; its legal basis is unverifiedOPA currently marks the land and building assessment fully tax-exempt; BlockReport does not receive the exemption determination or basis.
Why it mattersFull OPA exemptions can have different legal bases, including government, religious, charitable/institutional, veteran, or other treatment. The current owner/use record is not a buyer’s tax forecast.
Verify nextConfirm the exact exemption basis, buyer eligibility, and next tax-year treatment directly with OPA.
Open the controlling City guidance ↗Closing file: checks no public-record summary can replace3 documents/searches to assign before settlement
Property Sales Certification
The seller must obtain Philadelphia’s certificate showing the base zoning, last use in the zoning record, and open violations. The City warns that it does not prove Building Code occupancy or show zoning overlays.
Next: Obtain the fresh certificate and compare it with the CO, permits, and Atlas overlays.
Official guidance ↗Date-effective City Property Payoff
The Tax Center Property Payoff covers Real Estate Tax, Commercial Trash, and L&I abatement-work invoices. Philadelphia says it does not include business-tax debts or liens, water and sewer charges, or fines for code violations.
Next: Request the City statement effective through settlement; read every period and invoice.
Official guidance ↗Professional title and water-lien searches
OPA ownership, deed summaries, and a zero tax balance are not clear title. Mortgages, judgments, municipal claims, water liens, easements, heirs, and other encumbrances require separate searches.
Next: Use a Pennsylvania lawyer/title company and obtain owner’s title insurance; order the separate water search/payoff.
Official guidance ↗Separate water-lien guidance ↗Informational only—not a legal opinion, title report, code inspection, tax payoff, or substitute for a Pennsylvania lawyer, title company, inspector, or tax professional.
Records to verify together
Rule-based groupings across this property's dated public records. Each flag shows the records that belong in the same verification step and where the inference stops.
Assessment/permit mismatch
The assessment jumped 615% in 2023, but no matching permit appears in the property timeline.
Evidence: assessment moved from $17,200 to $123,000 · no permit shown in 2022-2024
Limit: Not proof of unpermitted work; reassessment, corrected data, or a permit under another parcel can also explain it.
Transparent record rules, not a score or forecast. Each flag is a prompt to verify the cited records, not a prediction or allegation.
Vacant landLand report
An empty lot: no building, just the land and its paper trail. The homeowner tools don't apply; the deed history, owner and zoning are below, and the analyst can trace what the owner holds citywide.
historical lien entry · through 2016
What it is
Vacant lot
Vacant Land Reside < Acre
Owner
Philadelphia Land Bank
OPA tax treatment
Full assessment exemption shown
2026 OPA taxable assessment $0 · basis and live balance require separate verification
Assessed value
$106,700
2026 OPA · 2027: $91,000
Lot size
992 sqft
Zoning
RSA5
Block context
527 W Montgomery Ave sits on the 500 block of W Montgomery Ave. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 525 W Montgomery Ave · 529 W Montgomery Ave
Where this comes from
- Assessment, spec sheet & owner — OPA Property Assessments, Office of Property Assessment
- Sales & deed history — Realty Transfer Tax records, Recorder of Deeds
- Permits, violations & inspections — L&I Property History · Atlas
- Tax delinquency snapshot · June 2022 — Real Estate Tax Delinquencies, Dept. of Revenue
- Historical tax ledger & liens · through 2016 — Real Estate Tax Balances, Dept. of Revenue
- Current property-tax balance — Verify with Philadelphia Revenue
- Zoning appeals — L&I & Zoning Board appeals
- Neighborhood income & rents — US Census ACS 5-year estimates
- Historical mortgage rates — Freddie Mac Primary Mortgage Market Survey, annual averages
- Imagery — Street photo © Google · Aerial © Esri, Maxar
Methodology & freshness
This report was assembled Jul 9, 2026, 10:36 PM ET. Available City datasets are queried from OpenDataPhilly (phl.carto.com) and the cited City ArcGIS feeds; record queries paginate rather than silently taking a first page. “Unavailable” means the source query failed or was not supplied, not “no record.” Reports re-pull on view after seven days and on an overnight rolling schedule; citywide benchmarks recompute weekly. Source dates still govern: the parcel-level tax-delinquency snapshot is June 2022 and the separate detailed tax ledger ends in 2016, so neither establishes today’s balance. The live balance and date-effective payoff must be verified in Tax Center. AI-written passages are grounded in the assembled record and rejected if they state a number the record does not hold.
Official city record ↗ · L&I history ↗ · See the whole block · Download this record (JSON)