2026 assessment
$668K
OPA value, not a listing price
Property report
129 S 10th St
Research this property with Analyst →2,677 sqftCMX5built 1900
Property at a glanceApartment building
Thomas Jefferson University
2027 published assessment
$784K
Future roll, not the current tax bill
Location
100 block of S 10th St
ZIP 19107
Neighborhood area
Washington Square West · Chinatown
Approximate · based on ZIP 19107
Assessment and City record timeline
The line tracks this property’s published City assessment. Markers show deeds, permits, inspections, licenses, violations, certifications, and appeals on their recorded dates. Select one to read the filing.
Assessments are tax-roll values, not sale prices or appraisals. OPA has published a 2027 assessment of $784,300. It is not yet the billed-year tax basis.
- OPA assessment · 2016$482K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2017$482K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2018$405K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2019$417K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2020$422K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2021$422K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2022$422K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2023$501K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2024$501K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2025$668K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2026$668K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2027$784K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- Permit · 2025-11-19Commercial Make Safe PermitThis permit category usually covers construction, repair, alteration, addition, or occupancy work. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- L&I violation · 2010-05-13FLOOR/CEILING PARTIALLY C IDA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- L&I violation · 2010-05-13WALL PARTIALLY COLLAPSED IDA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- L&I violation · 2010-05-13ROOF FIRE DAMAGED IDA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- Inspection · 2010-05-13CSUINITIALA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2010-05-13CSUINITIALA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- L&I violation · 2023-08-08UNSAFE STRUCTUREA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- L&I violation · 2023-08-08ROOF DEFICIENCIESA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- L&I violation · 2023-08-08INTERIOR UNSAFE GENERALA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- Inspection · 2023-08-08L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2023-09-12L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2024-02-15L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2024-07-20L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2024-09-25L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2024-11-01L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2025-01-07L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2025-03-14L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2025-05-28L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2025-09-19L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2025-10-09L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2025-10-21L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2025-12-10L&I investigationA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- License · 2025-09-04Thomas Jefferson University: Vacant Residential Property / Lot landlord or residential registration initially issuedA City license record tied to an activity or property use. Its issue, expiration, inactive, and status fields—not the category alone—show what was recorded for this date.Philadelphia L&I licenses and property records ↗
Property assessmentAssessmentL&I violationPermitInspectionLicense
Scroll horizontally to move through the years. Each icon sits on its recorded date; records without a day are labeled and centered within their year. Select one to explain the filing.
Highlight
Every dated record23 events · exact dates, newest first
- InspectionL&I investigation
- PermitCommercial Make Safe Permit
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- LicenseThomas Jefferson University: Vacant Residential Property / Lot landlord or residential registration initially issued
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationUNSAFE STRUCTURE
- L&I violationROOF DEFICIENCIES
- L&I violationINTERIOR UNSAFE GENERAL
- InspectionL&I investigation
- L&I violationFLOOR/CEILING PARTIALLY C ID
- L&I violationWALL PARTIALLY COLLAPSED ID
- L&I violationROOF FIRE DAMAGED ID
- InspectionCSUINITIAL
- InspectionCSUINITIAL
Verify the public record
Property tax
$9,344/year estimated property tax
2026 taxable assessment $667,500 × 1.3998%. This is an estimate, not a bill or account balance. The City maintains payments, credits, interest, and the current amount due.
OPA has published a 2027 assessment of $784,300. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 8712716002026 taxable assessment equals the full assessed value.
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.”
Where the record looks off
Conflicts in City paperwork. Flags on the data, not the property.
"Built 1900" is usually a placeholder
Philadelphia records use 1900 as a stand-in when the real construction year was never documented. Treat the age as unknown, not as 120+ years.
Property report
Not a house
Apartment building. A $0 assessment-based estimate does not prove the live Tax Center account has no prior-period balance or other charges.
What it is
Apartment building
Str/Off+Apt 3.5 Sty Mason
Owner
Thomas Jefferson University
Public / institutional
$ / sq ft
$293
assessed value ÷ interior sqft
Corridor
Market East
city commercial corridor
Interior area
2,677 sqft
Lot size
960 sqft
Built
1900
Zoning
CMX5
Recorded owner
Who's behind it
Thomas Jefferson University · corporate / LLC owner
• Owns 4 properties across Philadelphia under this name, assessed at $5.9M combined
• Tax bills mail to 129 S 10th St, Philadelphia PA, 19107
Block context
100 block of S 10th St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 127 S 10th St · 131 S 10th St
L&I license dates · data through Jul 24, 2026
Business licenses at this address Latest pull
What L&I has registered at this OPA parcel, newest initial license date first.
No L&I business license is on record at this address in data through Jul 24, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
Thomas Jefferson UniversityActive
Vacant Residential Property / Lot · Initial issue date Sep 4, 2025 · Filed expiration Sep 3, 2026
A license is an L&I registration, not proof that a business is open, operating today, or located at this storefront. Dates are license dates. Events are deduped by parcel, business identity, and license type, so a renewal is not shown as another opening. Other permit and filing types remain in the full source ledger.
Open every source row 23 dated rows
- InvestigationL&I investigation
Case CF-2023-076120 · PASSED
The cited inspection visit was marked passed.
- PermitCommercial Make Safe Permit
Permit CP-2025-004939 · Completed
**MAKE SAFE PERMIT** FOR THE REPLACEMENT OF FLOOR JOIST, NEW POST, SHORING, FLASHING, PARGING, TO COMPLY WITH VIOLATION CASE #CF-2023-076120. NOT TO EXCEED SCOPE OF WORK NOTED IN ENGINEER'S REPORT AND SHOWN ON APPROVED PLANS. SEPARATE PERMITS REQUIRED FOR ANY ADDITIONAL ALTERATIONS THAT ARE NOT SPECIFICALLY ADDRESSED ON THE VIOLATIONS. IN ACCORDANCE WITH CODE BULLETIN PM-1801, A PA PROFESSIONAL ENGINEER IS REQUIRED TO MONITOR REPAIRS MADE UNDER THIS PERMIT. THE ENGINEER MUST SUBMIT A SEALED STATEMENT TO THE DEPARTMENT CONFIRMING THAT THE STRUCTURE IS IN SOUND CONDITION AT COMPLETION.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License issue eventThomas Jefferson University: Vacant Residential Property / Lot landlord or residential registration initially issued
License 0988005 · Active
License event. Registration does not prove present operation or storefront occupancy.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationUNSAFE STRUCTURE
Case CF-2023-076120 · Violation VI-2023-058089 · Code PM15-108.1 · COMPLIED
Resolution: COMPLIED - PERMIT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationROOF DEFICIENCIES
Case CF-2023-076120 · Violation VI-2023-058090 · Code PM15-304.1(H) · COMPLIED
Resolution: COMPLIED - PERMIT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationINTERIOR UNSAFE GENERAL
Case CF-2023-076120 · Violation VI-2023-058091 · Code PM15-305.1 · COMPLIED
Resolution: COMPLIED - PERMIT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2023-076120 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationFLOOR/CEILING PARTIALLY C ID
Case 235153 · Violation 1682978 · Code PM-308.1/5 · ERROR
- ViolationWALL PARTIALLY COLLAPSED ID
Case 235153 · Violation 1682976 · Code PM-308.1/11 · ERROR
- ViolationROOF FIRE DAMAGED ID
Case 235153 · Violation 1682977 · Code PM-308.1/3 · ERROR
- InvestigationCSUINITIAL
Case 235153 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationCSUINITIAL
Case 235153 · CLOSED
City marked the record closed; open the case for the closing reason.
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
- Imagery: Street photo © Google · Aerial © Esri, Maxar
Methodology & freshness
This report was assembled Jul 24, 2026, 11:07 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. 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)