2026 taxable assessment $0 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $188,300; it is not the 2026 billed-year value.
Land report
666 N 10th St
Vacant lot · Redevelopment Authority & Philadelphia Of · fully tax-exempt (2026 OPA). On the 600 block of N 10th St.
Property summary
Assessment$215,5002026 OPA assessment · 2027: $188,300
Last sale—No sale value available
Est. tax bill$0/year2026 OPA · full assessment exemption shown
Tax delinquencyNo 2022 matchNot proof account is current
Permits0Every fetched City permit
Violations0 open13 historical across 7 cases
“Open” reflects records available then historical records keep their source dates estimates are labeled
BlockReport AI · cited public records
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BlockReport can explain a discrepancy, but it cannot rewrite an official City record. Use the agency that owns the underlying fact:
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 1411136102026 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 No current conclusion
This parcel did not match the June 2022 delinquency snapshot. That absence does not confirm the account is current today.
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 matters2 L&I violations (2018); 2 L&I violations (2020); L&I: 1 failed, 1 passed (2020); 2 L&I violations (2021); L&I: 1 failed, 1 passed (2021); L&I violation (2022); Inspection failed ×2 (2022).
View supporting records →City Property History
Fetched L&I and zoning records
Every row successfully fetched for this report is counted below. Dataset availability and matching can differ from the City's interactive file; use the official link for current detail.
- Recorded owner
- Redevelopment Authority & Philadelphia Of
- Tax mailing address
- 1234 MARKET ST, PHILADELPHIA PA, 19107
- L&I district
- CENTRAL EAST
- Building ID (BIN)
- —
- OPA account
- 141113610
Permits0No match
Violation cases713 violation records · 0 open
Investigations64 failed · 2 passed · 0 closed
Building certifications0No match
Business licenses0No match
Appeals0No match
PermitsPermit number, issued date, work and City status0
No permits matched this parcel in the fetched City dataset.
Violation cases13 individual violation records; resolved history remains visible7
Case 393940CLOSED
STANDARD · Opened Jul 26, 2013 · completed Aug 14, 2013
- EXT A-VACANT LOT CLEAN/MAINTAIViolation 2878097Jul 26, 2013 COMPLIED
- CLIP VIOLATION NOTICEViolation 2878096Jul 26, 2013 COMPLIED
Case 498409CLOSED
STANDARD · Opened Aug 20, 2015 · completed Mar 16, 2016
- CLIP VIOLATION NOTICEViolation 3683862Aug 20, 2015 COMPLIED
- EXT A-VACANT LOT CLEAN/MAINTAIViolation 3683863Aug 20, 2015 COMPLIED
Case 544752CLOSED
STANDARD · Opened Jul 18, 2016 · completed Sep 27, 2016
- CLIP VIOLATION NOTICEViolation 4012464Jul 18, 2016 COMPLIED
- EXT A-VACANT LOT CLEAN/MAINTAIViolation 4012465Jul 18, 2016 COMPLIED
Case 634107CLOSED
STANDARD · Opened May 16, 2018 · completed Jun 15, 2018
- CLIP VIOLATION NOTICEViolation 4675064May 16, 2018 COMPLIED
- EXT A-VACANT LOT CLEAN/MAINTAIViolation 4675065May 16, 2018 COMPLIED
Case CF-2020-026945CLOSED
NOTICE OF VIOLATION · Opened Jun 16, 2020 · completed Jul 1, 2020
- VACANT STRUCTURE & LANDViolation VI-2020-010954Jun 16, 2020 COMPLIED
- EXTERIOR AREA WEEDSViolation VI-2020-010953Jun 16, 2020 COMPLIED
Case CF-2021-039137CLOSED
NOTICE OF VIOLATION · Opened May 13, 2021 · completed May 27, 2021
- EXTERIOR AREA WEEDSViolation VI-2021-029070May 13, 2021 COMPLIED
- VACANT STRUCTURE & LANDViolation VI-2021-029071May 13, 2021 COMPLIED
Case CF-2022-034329CLOSED
NOTICE OF VIOLATION · Opened Apr 22, 2022 · completed May 10, 2022
- EXTERIOR AREA WEEDSViolation VI-2022-026659Apr 22, 2022 COMPLIED
InvestigationsEvery inspector visit, including CLOSED outcomes6
L&I investigationCase CF-2020-026945
Jun 16, 2020 FAILED
L&I investigationCase CF-2020-026945
Jul 1, 2020 PASSED
L&I investigationCase CF-2021-039137
May 13, 2021 FAILED
L&I investigationCase CF-2021-039137
May 27, 2021 PASSED
L&I investigationCase CF-2022-034329
Apr 22, 2022 FAILED
L&I investigationCase CF-2022-034329
May 10, 2022 FAILED
Building certificationsInspection result and filed expiration date by L&I building ID0
No building certifications matched this parcel in the fetched City dataset.
Business licensesHistorical and active licenses are both retained0
No business licenses matched this parcel in the fetched City dataset.
AppealsApplication status and decision are separate City fields0
No appeals matched this parcel in the fetched City dataset.
City of Philadelphia OPA, L&I and Zoning Board records, shown as filed. A CLOSED investigation is an outcome label, not a missing visit; an appeal's application status and decision may differ.
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.
3 verify
1 favorable dated record
VerifyFailed inspections are dated events—not the current condition4 failed, 2 passed, and 0 CLOSED investigation outcomes are in the fetched history; the latest dated visit was FAILED on May 10, 2022.
Why it mattersA PASSED or FAILED value applies to that inspection visit. CLOSED is a separate source status; none of the three alone proves the parent permit or violation case closed—or describes today’s condition.
Verify nextOpen the parent case/permit for each material failure and confirm its later disposition.
Open the controlling City guidance ↗VerifyThe latest nominal transfer is not a market sale—or a title opinionThe latest deed in the assembled record moved for nominal consideration.
Why it mattersA $1 or nominal deed can be a valid family, estate, or entity transfer. It does not establish a sale price, clear title, or by itself prove a tangled title.
Verify nextRead the recorded deed and have the title search confirm every grantor, grantee, estate/probate step, lien, and authority to sell.
Open the controlling City guidance ↗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 ↗Favorable dated recordNo open violation; closed history remains relevantThe fetched record shows 0 open and 13 historical violations across 7 cases.
Why it mattersA closed case is materially better than an open one, but it does not by itself prove that every altered use, unit, or concealed condition matches today’s approvals.
Verify nextUse the closed cases to target the inspection and occupancy-file review.
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 58% in 2025, but no matching permit appears in the property timeline.
Evidence: assessment moved from $136,500 to $215,500 · no permit shown in 2024-2026
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.
What it is
Vacant lot
Vacant Land Reside < Acre
Owner
Redevelopment Authority
OPA tax treatment
Full assessment exemption shown
2026 OPA taxable assessment $0 · basis and live balance require separate verification
Assessed value
$215,500
2026 OPA · 2027: $188,300
Lot size
970 sqft
Zoning
RSA5
Block context
666 N 10th St sits on the 600 block of N 10th St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 664 N 10th St · 668 N 10th St
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 10, 2026, 3:42 AM 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. For this property: Permits: queried · Violations: queried · Investigations: queried · Appeals: queried · Licenses: queried · Building certifications: queried. “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)