2026 assessment
$546K
OPA value, not a listing price
House report
18 S 51st St
3 stories1,935 sqftRM1built 1925
Property at a glanceHouse
Owner-occupancy signal
ZIP 19139 area
Walnut Hill · Haddington
0 block of S 51st 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$148K 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$148K 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$148K 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$166K 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$241K 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$241K 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$241K 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$499K 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$499K 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$546K 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$546K 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$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 ↗
- Deed / sale · 2016Deed / sale $60KA 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 · 2018Deed / sale $360KA 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 · 2016-08-11Major 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 · 2016-09-14AlterationThis 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 · 2017-02-06PlumbingThis 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 · 2017-02-21ElectricalThis 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 · 2017-03-31MechanicalThis 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 · 2018-01-19PlumbingThis 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 · 2022-09-08Addition 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 ↗
- L&I violation · 2014-12-03LICENSE-VAC RES BLDG (vacant residential building license required)This usually records a requirement to obtain a Vacant Structure License for an unoccupied residential building. Check later license and compliance rows because it does not establish present vacancy or an unresolved violation.How the City licenses vacant residential property ↗
- L&I violation · 2014-12-03VACANT PROP STANDARD (likely: vacant-property enforcement standard)A legacy L&I label associated with vacant-property requirements. It may concern licensing, securing, or maintaining a vacant structure; the notice and cited code control, and this row alone does not prove the property is vacant now.Read Philadelphia Code §9-3905 ↗
- L&I violation · 2014-12-03EXT A-CLEAN WEEDS/PLANTS (Cut or remove weeds and overgrowth from the exterior area)Cut or remove weeds and overgrowth from the exterior areaHow L&I violations and orders work ↗
- L&I violation · 2014-12-03EXT A-CLEAN RUBBISH/GARBAGE (Remove rubbish or garbage from the exterior area)Remove rubbish or garbage from the exterior areaHow L&I violations and orders work ↗
- L&I violation · 2014-12-03EXT A-CLEAN/EXTERMINATE (Clean the exterior area and address pests)Clean the exterior area and address pestsHow L&I violations and orders work ↗
- Inspection · 2014-12-03HCEU 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 ↗
- Inspection · 2014-12-03HCEU 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 · 2015-08-19ROOF PARTIALLY COLLAPSEDA 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 · 2015-08-19WALL PARTIALLY COLLAPSEDA 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 · 2015-01-15HCEU 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 ↗
- Inspection · 2015-01-15HCEU 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 ↗
- Inspection · 2015-02-20HCEU 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 ↗
- Inspection · 2015-08-18CSUINITIALA 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 · 2015-09-23CSUINITIALA 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 · 2016-06-07CSUINITIALA 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 · 2016-09-08CSUINITIALA 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 · 2017-02-07PRECOURT (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 ↗
- Appeal · 2017-05-16Zoning board appealA challenge or request reviewed through a City appeals process. Filing an appeal does not show who prevailed; read the decision, conditions, and related permit or violation.How Philadelphia L&I appeals work ↗
Property assessmentBlock median & rangeZIP 19139 (Walnut Hill · Haddington) medianAssessmentDeed / saleL&I violationAppealPermitInspection
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 record27 events · exact dates, newest first
- PermitAddition and/or Alteration
- PermitPlumbing
- Deed / saleDeed / sale $360K
- AppealZoning board appeal
- PermitMechanical
- PermitElectrical
- InspectionPRECOURT (likely: pre-court compliance inspection)
- PermitPlumbing
- PermitAlteration
- InspectionCSUINITIAL
- PermitMajor alteration
- InspectionCSUINITIAL
- Deed / saleDeed / sale $60K
- InspectionCSUINITIAL
- L&I violationROOF PARTIALLY COLLAPSED
- L&I violationWALL PARTIALLY COLLAPSED
- InspectionCSUINITIAL
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationLICENSE-VAC RES BLDG (vacant residential building license required)
- L&I violationVACANT PROP STANDARD (likely: vacant-property enforcement standard)
- L&I violationEXT A-CLEAN WEEDS/PLANTS (Cut or remove weeds and overgrowth from the exterior area)
- L&I violationEXT A-CLEAN RUBBISH/GARBAGE (Remove rubbish or garbage from the exterior area)
- L&I violationEXT A-CLEAN/EXTERMINATE (Clean the exterior area and address pests)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
Flags: 1 zoning/board appeal on record · latest deed has shared-name parties; relationship unverified. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$6,240/year estimated property tax
2026 taxable assessment $445,800 × 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 $422,000. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 6021666002026 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.
Stories
3
Interior
1,935 sqft
livable area
Lot
2,010 sqft
Central air
No
Exterior condition
Above average
city code 3
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
Zoning appeals
1
CLOSED · Granted · 2017
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
0 block of S 51st St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 16 S 51st St · 20 S 51st St
L&I licenses checked through Jul 23, 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 27 dated rows
- PermitAddition and/or Alteration
Permit EP-2022-008405 · Completed
Installation of solar array in accordance with signed standard.
- PermitPlumbing
Permit 846596 · COMPLETED
INSTALL 5" CURB TRAP 4" FAI PA20180023475 "SELF-CERTIFICATION'S ARE NO LONGER PERMITTED" - "ALL EXCAVATIONS AND PLUMBING TRENCHES IN EXCESS OF 5 FEET IN DEPTH MUST HAVE APPROVED SHORING IN PLACE AT THE TIME OF INSPECTION"
- Recorded transfer$360K transfer
2018
- AppealZoning board appeal
Appeal 29151 · CLOSED · Granted
Related permit 714169 · PERMIT FOR REDUCTION IN USE TO SINGLE FAMILY HOUSEHOLD LIVING WITHIN AN EXISTING SEMI-DETACHED BUILDING
- PermitMechanical
Permit 766985 · COMPLETED
INSTALLATION OF 2 UNITS (INCLUDING DUCTWORK AND ALL ASSOCIATED ACCESSORIES). SFD
- PermitElectrical
Permit 760678 · COMPLETED
TOTAL REWIRE INCLUDING 200AMP SERVICE PER 2008 NEC (SFD)
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 462362 · PASSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.
- PermitPlumbing
Permit 756952 · COMPLETED
INSTALLATION OF 3 W/C, 3 LAVS, 1 BATHTUBS, 1 SHOWER, 1 LAUNDR 1 KITCHEN SINK 1 DISHWASHER IN ADDITION TO ONE WATER HEATER.THE INSTALLATION WILL COMPLY WITH THE PHILADEPHIA PLUBMING CODE 2004
- PermitAlteration
Permit 719144 · COMPLETED
EZ PERMIT STADARD ALTERATIONS- FOR ALTERATIONS TO AN EXISTING ONE FAMILY DWELLING AS PER ATTACHED STANDARD. DEVIATIONS FROM THIS STANDARD WILL RESULT IN PERMIT REVOCATION AND REQUIRE SUBMISSION OF CONSTRUCTION PLANS.
- InvestigationCSUINITIAL
Case 498097 · PASSED
The cited inspection visit was marked passed.
- PermitMajor alteration
Permit 714180 · COMPLETED
MAKE SAFE PERMIT - FOR REPAIRING THE DAMAGED PORCH ROOF AND SIDE BAY AREA WITH LIKE IN-KIND TO RESOLVE CASE #498097. ABUTTING SIDEWALK MUST BE CLOSED WITH FENCING A MINIMUM OF 6' IN HEIGHT. SEPARATE STREETS DEPARTMENT PERMIT REQUIRED FOR SIDEWALK CLOSURE. A SEPARATE PERMIT IS REQUIRED FOR ANY ADDITIONAL ALTERATIONS THAT ARE NOT SPECIFICALLY ADDRESSED ON CASE #498097.
- InvestigationCSUINITIAL
Case 498097 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- Recorded transfer$60K transfer
2016
- InvestigationCSUINITIAL
Case 498097 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationROOF PARTIALLY COLLAPSED
Case 498097 · Violation 3963919 · Code PM-307.1/3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationWALL PARTIALLY COLLAPSED
Case 498097 · Violation 3963918 · Code PM-307.1/12 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationCSUINITIAL
Case 498097 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 462362 · 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.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 462363 · 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.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 462362 · 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.
- ViolationLICENSE-VAC RES BLDG (vacant residential building license required)
Case 462362 · Violation 3477607 · Code PM-102.4/2 · COMPLIED
This usually records a requirement to obtain a Vacant Structure License for an unoccupied residential building. Check later license and compliance rows because it does not establish present vacancy or an unresolved violation. City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVACANT PROP STANDARD (likely: vacant-property enforcement standard)
Case 462363 · Violation 3411455 · Code PM-306.0/1 · COMPLIED
A legacy L&I label associated with vacant-property requirements. It may concern licensing, securing, or maintaining a vacant structure; the notice and cited code control, and this row alone does not prove the property is vacant now. City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-CLEAN WEEDS/PLANTS (Cut or remove weeds and overgrowth from the exterior area)
Case 462363 · Violation 3411454 · Code PM-302.3/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-CLEAN RUBBISH/GARBAGE (Remove rubbish or garbage from the exterior area)
Case 462363 · Violation 3411453 · Code PM-302.2/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-CLEAN/EXTERMINATE (Clean the exterior area and address pests)
Case 462363 · Violation 3411452 · Code PM-302.2/1 · 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 462362 · 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.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 462363 · 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.
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 23, 2026, 12:03 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)