2026 assessment
$651K
OPA value, not a listing price
House report
851 N 23rd St
4 bd2 ba3 stories2,190 sqftRM1built 1920
Property at a glanceHouse
Owner-occupancy signal
ZIP 19130 area
Fairmount · Spring Garden
800 block of N 23rd 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$545K 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$545K 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$545K 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$652K 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$674K 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$674K 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$674K 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$642K 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$642K 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$651K 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$651K 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$717K 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 · 2014Deed / sale $545KA 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 · 2016Deed / sale $627KA 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 · 2013-12-19Major 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 · 2013-12-24PlumbingThis 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 · 2013-12-31PlumbingThis 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 · 2014-01-14ElectricalThis 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 · 2014-01-23MechanicalThis 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 · 2014-06-05ZoningThis 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 · 2014-06-05Major 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 · 2019-12-17Addition and/or AlterationThis 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 · 2019-12-18ZoningThis 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 ↗
- L&I violation · 2021-08-24OCCUPIED W/O FINAL APPROVALA 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 · 2021-08-24SPECIAL INSPECTIONS 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 ↗
- Inspection · 2021-08-24L&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 · 2021-09-28L&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 · 2021-11-09L&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 · 2022-06-16L&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 ↗
Property assessmentBlock median & rangeZIP 19130 (Fairmount · Spring Garden) 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 record17 events · exact dates, newest first
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationOCCUPIED W/O FINAL APPROVAL
- L&I violationSPECIAL INSPECTIONS REQUIRED
- InspectionL&I investigation
- PermitZoning
- PermitAddition and/or Alteration
- Deed / saleDeed / sale $627K
- PermitZoning
- PermitMajor alteration
- PermitMechanical
- PermitElectrical
- Deed / saleDeed / sale $545K
- PermitPlumbing
- PermitPlumbing
- PermitMajor alteration
Flags: latest deed has shared-name parties; relationship unverified. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$7,717/year estimated property tax
2026 taxable assessment $551,300 × 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 $717,000. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 1511656002026 OPA removes $100,000 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
4
Bathrooms
2
Stories
3
Interior
2,190 sqft
livable area
Lot
1,106 sqft
Basement
Full, finished
city code A
Heat
Forced hot air
city code A
Central air
Yes
Exterior condition
Average
city code 4
Above averageBelow average
Interior condition
Above average
city code 3
Above averageBelow average
Quality grade
C+
assessor's grade
ABCDE
Zoning
RM1
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
800 block of N 23rd St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 849 N 23rd St · 853 N 23rd 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 17 dated rows
- InvestigationL&I investigation
Case CF-2021-081580 · PASSED
The cited inspection visit was marked passed.
- InvestigationL&I investigation
Case CF-2021-081580 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2021-081580 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationOCCUPIED W/O FINAL APPROVAL
Case CF-2021-081580 · Violation VI-2021-058752 · Code A-402.5 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationSPECIAL INSPECTIONS REQUIRED
Case CF-2021-081580 · Violation VI-2021-058751 · Code A-304.2/2 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2021-081580 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitZoning
Permit 1016246 · COMPLETED
WORK IS IN RESPONSE TO EXISTING DWELLING'S REQUIRED ENVELOPE REPAIRS; WATER IS INFILTRATING THE DWELLING. REMOVE:EXISTING WOOD FRAMED LOWER ROOF DECK AND SPIRAL STAIRCASE SERVICING EXISTING UPPER ROOF DECK. REMOVE:TWO ABANDONED/DAMAGED MASONRY CHIMNEYS TO BELOW ROOF MEMBRANE. REPAIR/RECONSTRUCT:PARAPET COMMON WALL, ROOFING MEMBRANE AND ASSOCIATED FLASHING. ALTERATION:UPDATE ROOF CAVITY W/FIBERGLASS INSULATION. RECONSTRUCT:WOOD FRAME DECK IN SAME FOOTPRINT AS EXISTING; ON NEWLY CONSTRUCTED BEARING POINTS. ALTERATION/CONSTRUCT:WOOD FRAMED STAIR IN LEU OF EXISTING SPIRAL STAIR, SERVICING EXISTING UPPER ROOF DECK. SEE BOSCO ARCHITECTS LLC (A-0) DRAWING DATED 2019-OCT.-04
- PermitAddition and/or Alteration
Permit 1016245 · Completed
WORK IS IN RESPONSE TO EXISTING DWELLING'S REQUIRED ENVELOPE REPAIRS; WATER IS INFILTRATING THE DWELLING. REMOVE:EXISTING WOOD FRAMED LOWER ROOF DECK AND SPIRAL STAIRCASE SERVICING EXISTING UPPER ROOF DECK. REMOVE:TWO ABANDONED/DAMAGED MASONRY CHIMNEYS TO BELOW ROOF MEMBRANE. REPAIR/RECONSTRUCT:PARAPET COMMON WALL, ROOFING MEMBRANE AND ASSOCIATED FLASHING. ALTERATION:UPDATE ROOF CAVITY W/FIBERGLASS INSULATION. RECONSTRUCT:WOOD FRAME DECK IN SAME FOOTPRINT AS EXISTING; ON NEWLY CONSTRUCTED BEARING POINTS. ALTERATION/CONSTRUCT:WOOD FRAMED STAIR IN LEU OF EXISTING SPIRAL STAIR, SERVICING EXISTING UPPER ROOF DECK. SEE BOSCO ARCHITECTS LLCDRAWINGS A-0, A-1, A-2 AND LARSEN & LANDIS STRUCTURAL ENGINEER'S
- Recorded transfer$627K transfer
2016
- PermitZoning
Permit 512160 · COMPLETED
FOR THE ERECTION OF ROOF DECKS WITH COMMUNICATING SPIRAL STAIRS TO AN EXISTING ATTACHED SINGLE FAMILY DWELLING. SIZE AND LOCATION AS SHOWN ON SUBMITTED PLAN.
- PermitMajor alteration
Permit 512158 · COMPLETED
FOR THE ERECTION OF ROOF DECKS WITH COMMUNICATING SPIRAL STAIRS TO AN EXISTING ATTACHED SINGLE FAMILY DWELLING PER SUBMITTED PLAN.
- PermitMechanical
Permit 516171 · COMPLETED
INSTALL 2 HVAC UNITS WITH DUCTWORK(SFD)
- PermitElectrical
Permit 515162 · COMPLETED
INSTALL 200AMP SERVICE AND INSTALL 30 LIGHT,25 OUTLETS,10 SMOKES THROUGHOUT PER 2008 NEC (SFD)
- Recorded transfer$545K transfer
2014
- PermitPlumbing
Permit 513750 · COMPLETED
INSTALL 3 TOILETS,3 LAVS,2 TUBS,1 KITCHEN SINK,1 WASHER AND 1 WATER HEATER PER 2008 NEC (SFD)
- PermitPlumbing
Permit 512834 · COMPLETED
REPLACING 5" LATERAL,HOUSE DRAIN,HOUSE TRAP AND FRESH AIR INLET PA20133580003 (SFD)
- PermitMajor alteration
Permit 512065 · COMPLETED
INTERIOR ALTERATIONS TO INCLUDE REMOVE NON LOAD BEARING WALLS ON 3RD FLOOR AND KITCHEN, NEW ROOF, NEW WINDOWS AND DOORS IN EXISTING OPENINGS, FRAME NEW WALLS IN FRONT OF EXISTING WALLS. STUCCO REAR OF BUILDING, SHEETROCK. APPLICANT AGREES TO LIMIT THE CONSTRUCTION TO COMPLY WITH EZ PERMIT STANDARD FOR INTERIOR ALTERATIONS, DATED JANUARY 2011. DEVIATION FROM THE STANDARD WILL RESULT IN REVOCATION OF THIS PERMIT AND IMPOSITION OF FURTHER PENALTIES.
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, 7:03 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)