2026 assessment
$501K
OPA value, not a listing price
House report
423 W Thompson St
3 bd2 ba3 stories1,248 sqftRSA5built 2016
Property at a glanceHouse
Owner-occupancy signal
ZIP 19122 area
Olde Kensington · North Philadelphia
400 block of W Thompson St
Assessment and City record timeline
Published City assessments for this house 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$7K 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$360K 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$360K 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$383K 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$380K 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$380K 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$380K 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$373K 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$373K 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$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 · 2026$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 · 2027$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 ↗
- Deed / sale · 2016Deed / sale $359KA 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 ↗
- Deed / sale · 2021Deed / sale $405KA 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 · 2015-09-21Zoning/useThis 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 · 2015-09-21New constructionThis 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 · 2015-11-04SuppressionThis permit category usually covers fire-suppression systems or related life-safety 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 · 2015-11-20ElectricalThis 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 · 2015-12-04PlumbingThis 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 · 2015-12-09PlumbingThis 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 · 2015-12-11MechanicalThis 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 · 2016-02-11MechanicalThis 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 · 2011-05-13VACANT LOT STANDARDA 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 · 2011-05-13CLIP VIOLATION NOTICEA 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 · 2015-04-16CLIP VIOLATION NOTICEA 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 · 2015-04-16EXT A-VACANT LOT CLEAN/MAINTAIA 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 · 2015-12-08PERMP- INST NEW PLUMBINGA 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 · 2015-12-08BP_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 · 2015-12-23DEBRIS REMOVE - CONSTRA 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 · 2016-01-04BP_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 ↗
Property assessmentBlock median & rangeZIP 19122 (Olde Kensington · North Philadelphia) medianAssessmentDeed / saleL&I violationPermitInspection
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 record18 events · exact dates, newest first
- Deed / saleDeed / sale $405K
- PermitMechanical
- InspectionBP_BLDG
- Deed / saleDeed / sale $359K
- L&I violationDEBRIS REMOVE - CONSTR
- PermitMechanical
- PermitPlumbing
- L&I violationPERMP- INST NEW PLUMBING
- InspectionBP_BLDG
- PermitPlumbing
- PermitElectrical
- PermitSuppression
- PermitZoning/use
- PermitNew construction
- L&I violationCLIP VIOLATION NOTICE
- L&I violationEXT A-VACANT LOT CLEAN/MAINTAI
- L&I violationVACANT LOT STANDARD
- L&I violationCLIP VIOLATION NOTICE
Flags: material assessment exemption; legal basis and term unverified. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$2,335/year estimated property tax
2026 taxable assessment $166,833 × 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 $500,500. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 1823117002026 OPA removes $333,667 from the taxable assessment through the owner-occupant exemption.
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.
Bedrooms
3
Bathrooms
2
Stories
3
Interior
1,248 sqft
livable area
Lot
629 sqft
Basement
Full, finished
city code A
Heat
Forced hot air
city code A
Central air
Yes
Exterior condition
Above average
city code 3
Above averageBelow average
Interior condition
Above average
city code 3
Above averageBelow average
Quality grade
B-
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
400 block of W Thompson St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 421 W Thompson St · 425 W Thompson St
L&I licenses checked through Jul 24, 2026
No business or residential license records
No business license or residential registration matched this OPA parcel in the latest City data.
Open every source row 18 dated rows
- Recorded transfer$405K transfer
2021
- PermitMechanical
Permit 669260 · COMPLETED
INSTALL (1) HAVC SYSTEM WITH DUCTWORK. (SFD)
- InvestigationBP_BLDG
Case 513177 · PASSED
The cited inspection visit was marked passed.
- Recorded transfer$359K transfer
2016
- ViolationDEBRIS REMOVE - CONSTR
Case 632509 · Violation 3806218 · Code A-104.1/5 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- PermitMechanical
Permit 657142 · EXPIRED
INSTALL 1 HVAC UNIT WITH DUCTWORK (SFD)
- PermitPlumbing
Permit 656910 · COMPLETED
STARTING FROM BASEMENT RUNNING DRAIN AND WATER LINES TO ALL FIXTURES IN 2 1/2 BATHROOMS, KITCHEN AND LAUNDRY. ROUGH AND FINISH. THE INSTALLATION WILL COMPLY WITH THE PHILADELPHIA PLUMBING CODE 2004
- ViolationPERMP- INST NEW PLUMBING
Case 513177 · Violation 3792191 · Code A-301.1/54 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationBP_BLDG
Case 513177 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitPlumbing
Permit 656196 · COMPLETED
LATERAL,CURB TRAP WITH 4" PIPE TO BASEMENT AND 1" WATER DISTRIBUTION LINE TO BASEMENT PA20153222319 (SFD)SELF CERTIFICATION'S ARE NO LONGER PERMITTED","ALL EXCAVATIONS AND PLUMBING TRENCHES IN EXCESS OF 5 FT IN DEPTH MUST HAVE APPROVED SHORING IN PLACE AT THE TIME OF INSPECTION"
- PermitElectrical
Permit 653537 · COMPLETED
INSTALLING NEW WIRING NEW SERVICE 2OOAMP NEW SWITCHES, OUTLETS, GFCI, LIGHT FIXTUES PER NEC 2008 NEC (SFD)EAST DISTRICT
- PermitSuppression
Permit 647177 · COMPLETED
FOR THE INSTALLATION OF AN AUTOMATIC SPRINKLER SYSTEM WITH A 1" COMBINED FIRE & DOMESTIC SERVICE LINE FOR A THREE (3) STORY SINGLE FAMILY DWELLING WITH ROOFTOP STRUCTURE.SYSTEM INSTALLATION IN ACCORDANCE WITH NFPA 13D.
- PermitZoning/use
Permit 632508 · COMPLETED
FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH A ROOF DECK AND A PILOT HOUSE (TO ENCLOSE ACCESS STAIRS ONLY). SIZE AND LOCATION AS SHOWN ON PLANS/APPLICATION. FOR USE AS ONE (1) FAMILY HOUSEHOLD LIVING.
- PermitNew construction
Permit 632509 · COMPLETED
ERECTION OF A (3) STORY ATTACHED STRUCTURE WITH A ROOF DECK AND A PILOT HOUSE FOR USE AS A SINGLE FAMILY DWELLING
- ViolationCLIP VIOLATION NOTICE
Case 475322 · Violation 3524787 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-VACANT LOT CLEAN/MAINTAI
Case 475322 · Violation 3524788 · Code PM-302.2/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVACANT LOT STANDARD
Case 277437 · Violation 2074718 · Code PM-306.0/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 277437 · Violation 2074717 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
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 25, 2026, 1:19 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)