2026 assessment
$526K
OPA value, not a listing price
Multi-family report
4526 Sansom St
3 stories2,256 sqftRSA5built 1925
Property at a glanceApartment building
Individual, other or unknown mailing address
ZIP 19139 area
Walnut Hill · Haddington
4500 block of Sansom St
Open L&I record
Open City history ↗3 violation rows marked OPEN in 1 active case
The actual City titles, code sections, case posture, and latest recorded inspections are shown here instead of only an aggregate count.
Case CF-2026-079925
IN VIOLATIONNotice Of Violation
- Rental License Multi Family (R2)
9-3902 (2) - Exterior Structure Roof Drainage
PM15-304.7 - Exterior Area Weeds
PM15-302.4
OPEN is the status in the fetched L&I file, not a new inspection by BlockReport. Read the notice for the cited condition and required correction, then verify the live case with L&I.
Assessment and City record timeline
Published City assessments for this building against its block and ZIP. Dated City filings are marked on the same line. Select one to read it. Assessments are tax-roll values, not sale prices or appraisals.
- OPA assessment · 2016$282K 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$282K 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$282K 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$347K 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$361K 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$361K 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$361K 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$346K 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$346K 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$526K 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$526K 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$647K 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 ↗
- Deed / sale · 2022Deed / sale $500KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Permit · 2014-03-11UseThis permit category usually covers the property’s allowed use, dimensions, occupancy, or site configuration. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2014-05-20Major alterationA broad legacy permit work category for a substantial building alteration. It can include changed layouts, partitions, fixtures, finishes, structural work, or occupancy-related work, but only the approved scope and plans say what this permit actually authorized; separate trade permits may be required.What Philadelphia building permits can cover ↗
- Permit · 2014-05-27AdministrativeThis 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 ↗
- Permit · 2014-06-20ElectricalThis permit category usually covers electrical installation, alteration, replacement, or repair. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2014-07-18PlumbingThis permit category usually covers water, drainage, fixtures, or other plumbing work. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2021-04-14AlterationsThis 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 ↗
- Permit · 2022-08-24AlterationsThis 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 ↗
- License · 2022-08-24Xia Chen: Rental 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 ↗
- L&I violation · 2013-12-09PERMB- ALTER REP'R EXT PORTIONA 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 · 2013-12-09PENALTY- NO BLDG PERM INFOA 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 · 2013-12-09PENALTY- NO PLUMB PERM INFOA 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 · 2013-12-09PENALTY- NO ELEC PERM INFOA 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 · 2013-12-09STOP WORK ORDERA 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 · 2013-12-09PERMB- ALTER REPAIR INT PART (Building permit required for interior alteration or repair)Building permit required for interior alteration or repairHow L&I violations and orders work ↗
- L&I violation · 2013-12-09BLDG PERMIT REQUIREDA 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 · 2013-12-09SWO- CONSTR W/O BLDG PERMIT (Stop-work order for construction without a building permit)Stop-work order for construction without a building permitHow L&I violations and orders work ↗
- Inspection · 2013-12-09BP_BLDGA 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 · 2019-05-20VACANT STRUCTURE LICENSEA 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 · 2019-05-20HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- L&I violation · 2026-07-02RENTAL LICENSE MULTI FAMILY (R2)A 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 · 2026-07-02EXTERIOR STRUCTURE ROOF DRAINAGEA 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 · 2026-07-02EXTERIOR AREA WEEDSA 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 · 2026-07-02L&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 ↗
- L&I violation · 2014-10-23WORKMANLIKE- FIRE CODEA 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 · 2014-01-16BP_BLDGA 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 · 2014-02-21BP_BLDGA 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 · 2014-04-03BP_BLDGA 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 · 2014-06-18PRECOURT (likely: pre-court compliance inspection)A follow-up before or during enforcement escalation; confirm the case sequence in the City file.What Philadelphia inspections check ↗
- Inspection · 2019-11-19HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- License · 2023-10-22Xia Chen: Rental landlord or residential registration marked inactiveA 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 ↗
- License · 2019-05-29FORTRESS TRUST: Rental 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 ↗
- License · 2022-07-27FORTRESS TRUST: Rental landlord or residential registration marked inactiveA 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 ↗
- License · 2014-11-17FORTRESS TRUST: 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 ↗
- License · 2015-04-29FORTRESS TRUST: Vacant Residential Property / Lot landlord or residential registration marked inactiveA 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 assessmentBlock median & rangeZIP 19139 (Walnut Hill · Haddington) medianAssessmentDeed / saleL&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 record35 events · exact dates, newest first
- L&I violationRENTAL LICENSE MULTI FAMILY (R2)
- L&I violationEXTERIOR STRUCTURE ROOF DRAINAGE
- L&I violationEXTERIOR AREA WEEDS
- InspectionL&I investigation
- LicenseXia Chen: Rental landlord or residential registration marked inactive
- PermitAlterations
- LicenseXia Chen: Rental landlord or residential registration initially issued
- LicenseFORTRESS TRUST: Rental landlord or residential registration marked inactive
- Deed / saleDeed / sale $500K
- PermitAlterations
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- LicenseFORTRESS TRUST: Rental landlord or residential registration initially issued
- L&I violationVACANT STRUCTURE LICENSE
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- LicenseFORTRESS TRUST: Vacant Residential Property / Lot landlord or residential registration marked inactive
- LicenseFORTRESS TRUST: Vacant Residential Property / Lot landlord or residential registration initially issued
- L&I violationWORKMANLIKE- FIRE CODE
- PermitPlumbing
- PermitElectrical
- InspectionPRECOURT (likely: pre-court compliance inspection)
- PermitAdministrative
- PermitMajor alteration
- InspectionBP_BLDG
- PermitUse
- InspectionBP_BLDG
- InspectionBP_BLDG
- L&I violationPERMB- ALTER REP'R EXT PORTION
- L&I violationPENALTY- NO BLDG PERM INFO
- L&I violationPENALTY- NO PLUMB PERM INFO
- L&I violationPENALTY- NO ELEC PERM INFO
- L&I violationSTOP WORK ORDER
- L&I violationPERMB- ALTER REPAIR INT PART (Building permit required for interior alteration or repair)
- L&I violationBLDG PERMIT REQUIRED
- L&I violationSWO- CONSTR W/O BLDG PERMIT (Stop-work order for construction without a building permit)
- InspectionBP_BLDG
Flags: 3 L&I violation rows marked OPEN. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$7,356/year estimated property tax
2026 taxable assessment $525,500 × 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 $647,200. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 6010307002026 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.”
The property, on paper
OPA physical field record.
Stories
3
Interior
2,256 sqft
livable area
Lot
1,536 sqft
Basement
Full
city code D
Central air
No
Exterior condition
Average
city code 4
Above averageBelow average
Interior condition
Average
city code 4
Above averageBelow average
Quality grade
C+
assessor's grade
ABCDE
Zoning
RSA5
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
4500 block of Sansom St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 4528 Sansom St · 4530 Sansom St
L&I license dates · data through Jul 21, 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 21, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
Xia ChenInactive
Rental · Initial issue date Aug 24, 2022 · Terminal license date Oct 22, 2023
FORTRESS TRUSTInactive
Rental · Initial issue date May 29, 2019 · Terminal license date Jul 27, 2022
FORTRESS TRUSTInactive
Vacant Residential Property / Lot · Initial issue date Nov 17, 2014 · Terminal license date Apr 29, 2015
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 35 dated rows
- ViolationRENTAL LICENSE MULTI FAMILY (R2)
Case CF-2026-079925 · Violation VI-2026-049349 · Code 9-3902 (2) · OPEN
The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.
- ViolationEXTERIOR STRUCTURE ROOF DRAINAGE
Case CF-2026-079925 · Violation VI-2026-049350 · Code PM15-304.7 · OPEN
The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.
- ViolationEXTERIOR AREA WEEDS
Case CF-2026-079925 · Violation VI-2026-049351 · Code PM15-302.4 · OPEN
The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.
- InvestigationL&I investigation
Case CF-2026-079925 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License terminal eventXia Chen: Rental landlord or residential registration marked inactive
License 903965 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitAlterations
Permit PP-2022-012256 · Completed
REPAIR/REPLACE CT, FAI
- License issue eventXia Chen: Rental landlord or residential registration initially issued
License 903965 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License terminal eventFORTRESS TRUST: Rental landlord or residential registration marked inactive
License 813889 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- Recorded transfer$500K transfer
2022
- PermitAlterations
Permit PP-2021-006217 · Completed
Replacing curb trap
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 686555 · PASSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked passed.
- License issue eventFORTRESS TRUST: Rental landlord or residential registration initially issued
License 813889 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- ViolationVACANT STRUCTURE LICENSE
Case 686555 · Violation 5047904 · Code 9-3905 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 686555 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License terminal eventFORTRESS TRUST: Vacant Residential Property / Lot landlord or residential registration marked inactive
License 647670 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventFORTRESS TRUST: Vacant Residential Property / Lot landlord or residential registration initially issued
License 647670 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- ViolationWORKMANLIKE- FIRE CODE
Case 520010 · Violation 3370311 · Code A-104.1/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- PermitPlumbing
Permit 550310 · COMPLETED
CORRECT EXISTING PLUMBING CONFIGURATION TO 3 FAMILY DWELLING
- PermitElectrical
Permit 544401 · COMPLETED
REPLACE SERVICE CABLE IN 4 METERS FOR 3 APARTMENTS AND 1 HOUSE AS PER NEC 2008 (WEST DISTRICT)
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 413546 · PASSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.
- PermitAdministrative
Permit 538965 · COMPLETED
TO AMEND PERMIT 520010 TO REMOVE REQUIREMENT OF SPRINKLER SYSTEM FOR EXISTING MULTI-FAMILY BUILDING. CERTIFICATE OF OCCUPANCY TO BE ISSUED UNDER THIS PERMIT.
- PermitMajor alteration
Permit 520010 · COMPLETED
LEVEL III ALTERATIONS TO LEGALIZE CHANGE IN OCCUPANCY CLASSIFICATION AS PER APPROVED PLANS. BUILDING TO BE FULLY SPRINKLERED. **SEPARATE PERMITS REQUIRED FOR MEP AND FIRE SUPPRESSION WORK**
- InvestigationBP_BLDG
Case 413546 · PASSED
The cited inspection visit was marked passed.
- PermitUse
Permit 523764 · COMPLETED
USE CHANGE TO A THREE FAMILY HOME
- InvestigationBP_BLDG
Case 413546 · PASSED
The cited inspection visit was marked passed.
- InvestigationBP_BLDG
Case 413546 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationPERMB- ALTER REP'R EXT PORTION
Case 413546 · Violation 3134006 · Code A-301.1/3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPENALTY- NO BLDG PERM INFO
Case 413546 · Violation 3134011 · Code A-901.13/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPENALTY- NO PLUMB PERM INFO
Case 413546 · Violation 3134013 · Code A-901.13/3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPENALTY- NO ELEC PERM INFO
Case 413546 · Violation 3134012 · Code A-901.13/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationSTOP WORK ORDER
Case 413546 · Violation 3134009 · Code A-504.1/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPERMB- ALTER REPAIR INT PART (Building permit required for interior alteration or repair)
Case 413546 · Violation 3134007 · Code A-301.1/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationBLDG PERMIT REQUIRED
Case 413546 · Violation 3134008 · Code A-501.1/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationSWO- CONSTR W/O BLDG PERMIT (Stop-work order for construction without a building permit)
Case 413546 · Violation 3134010 · Code A-504.1/3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationBP_BLDG
Case 413546 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
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 22, 2026, 9:06 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)