2026 assessment
$324K
OPA value, not a listing price
House report
817 S 51st St
2 stories1,350 sqftRSA3built 1925
Property at a glanceHouse
Owner-occupancy signal
ZIP 19143 area
Cedar Park · Kingsessing
800 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$106K 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$106K 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$106K 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$131K 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$142K 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$142K 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$142K 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$290K 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$290K 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$324K 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$324K 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$317K 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 · 2009-11-12ZoningThis 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 · 2009-11-12AdditionThis 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 · 2010-03-08ElectricalThis 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 · 2010-03-18PlumbingThis 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 · 2010-07-13Major 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 · 2011-11-17Major 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 · 2018-11-13PlumbingThis 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 · 2018-11-20PlumbingThis 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 ↗
- L&I violation · 2010-02-01PROSEC- STD INFO (likely: Standard enforcement or prosecution notice)Legacy L&I shorthand; the case notice contains the actual required correction and deadlines.How L&I violations and orders work ↗
- L&I violation · 2010-02-01EXT S-EXPOSED SURFACES 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 · 2010-02-01EXT S-CORNICE BARGEBOARD DEFECA 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 · 2010-02-01EXT S-ROOF REPAIR (Repair the exterior roof)Repair the exterior roofHow L&I violations and orders work ↗
- L&I violation · 2010-02-01EXT S-EXTERIOR REPAIR/MAINTAINA 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 · 2010-02-01EXT A-CLEAN/EXTERMINATE (Clean the exterior area and address pests)Clean the exterior area and address pestsHow L&I violations and orders work ↗
- Inspection · 2010-02-01HCEU 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 · 2010-03-02HCEU 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 · 2010-03-09HCEU 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 · 2010-03-09HCEU 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 · 2013-07-12PRECOURT (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 ↗
- License · 2012-05-25STEPHANIE ALARCON: 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 · 2021-04-29STEPHANIE ALARCON: 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 ↗
- Appeal · 2010-05-18RB_LIRBA 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 19143 (Cedar Park · Kingsessing) medianAssessmentL&I violationAppealPermitInspectionLicense
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 record22 events · exact dates, newest first
- LicenseSTEPHANIE ALARCON: Rental landlord or residential registration marked inactive
- PermitPlumbing
- PermitPlumbing
- InspectionPRECOURT (likely: pre-court compliance inspection)
- LicenseSTEPHANIE ALARCON: Rental landlord or residential registration initially issued
- PermitMajor alteration
- PermitMajor alteration
- AppealRB_LIRB
- PermitPlumbing
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- PermitElectrical
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationPROSEC- STD INFO (likely: Standard enforcement or prosecution notice)
- L&I violationEXT S-EXPOSED SURFACES MAINTAI
- L&I violationEXT S-CORNICE BARGEBOARD DEFEC
- L&I violationEXT S-ROOF REPAIR (Repair the exterior roof)
- L&I violationEXT S-EXTERIOR REPAIR/MAINTAIN
- L&I violationEXT A-CLEAN/EXTERMINATE (Clean the exterior area and address pests)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- PermitZoning
- PermitAddition
Flags: 1 zoning/board appeal on record. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$3,138/year estimated property tax
2026 taxable assessment $224,200 × 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 $317,100. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 5110192002026 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
2
Interior
1,350 sqft
livable area
Lot
2,320 sqft
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
RSA3
city zoning code
Zoning appeals
1
OPEN · City affirmed · 2010
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
800 block of S 51st St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 815 S 51st St · 819 S 51st St
L&I license dates · data through Jul 23, 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 23, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
STEPHANIE ALARCONInactive
Rental · Initial issue date May 25, 2012 · Terminal license date Apr 29, 2021
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 22 dated rows
- License terminal eventSTEPHANIE ALARCON: Rental landlord or residential registration marked inactive
License 565349 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitPlumbing
Permit 928938 · COMPLETED
REPLACEMENT OF MAIN HOUSE DRAIN WITH HOUSE TRAP AND FAI
- PermitPlumbing
Permit 926822 · EXPIRED
SEAL LATERAL
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 226012 · PASSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.
- License issue eventSTEPHANIE ALARCON: Rental landlord or residential registration initially issued
License 565349 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitMajor alteration
Permit 373922 · COMPLETED
REPLACE PREVIOUSLY DEMOLISHED 6'-0" X 16'-0" FRONT PORCH ROOF; ROOF WILL BE ATTACHED TO THE HOUSE WITH A 2" X 10" X 16'-0" LEDGER BOARD BOLTED WITH EPOXY ANCHORS; FRONT BEAM WILL BE CONSTRUCTED OF (2)2" X 10" X 16'-0" LUMBER; RAFTERS WILL BE (6)2" X 8" X 7'-0" LUMBER ON 16" CENTERS; STRUCTURE WILL REST ON EXISTING IRON COLUMNS OR NEW FIBERGLASS COLUMNS BUILT FOR THIS PURPOSE; WOOD WILL NOT BE PRESSURE TREATED, WILL BE PRIMED WITH EXTERIOR PRIMER
- PermitMajor alteration
Permit 290558 · COMPLETED
PERMIT TO COMPLY VIOLATION, CASE #226012. REPAIR OR REMOVAL OF UNSAFE FRONT PORCH.
- AppealRB_LIRB
Appeal 11468 · OPEN · City affirmed
Related permit 226012 · THIS IS IN REFERENCE TO SERIOUS PROBLEMS REGARDING VIOLATIONS AGAINST MY HOME.
- PermitPlumbing
Permit 267480 · COMPLETED
INSTALL 3 PIECE BATHROOM, WATER AND DRAINS AND STACK: 1 WATER CLOSET, 1 LAV, 1 BATHTUB
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 226012 · 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 226012 · CLOSED
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. City marked the record closed; open the case for the closing reason.
- PermitElectrical
Permit 263918 · COMPLETED
SFD INSTALL RECEPTACLES, LIGHTING, SWITCHES, SMOKE ALARMS AND CO DETECTORS FOR NEW ADDITION AS PER NEC.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 226012 · 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.
- ViolationPROSEC- STD INFO (likely: Standard enforcement or prosecution notice)
Case 226012 · Violation 1612219 · Code A-503.2/2 · COMPLIED
Legacy L&I shorthand; the case notice contains the actual required correction and deadlines. City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT S-EXPOSED SURFACES MAINTAI
Case 226012 · Violation 1612224 · Code PM-304.5/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT S-CORNICE BARGEBOARD DEFEC
Case 226012 · Violation 1612223 · Code PM-304.5/3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT S-ROOF REPAIR (Repair the exterior roof)
Case 226012 · Violation 1612222 · Code PM-304.4/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT S-EXTERIOR REPAIR/MAINTAIN
Case 226012 · Violation 1612221 · Code PM-304.1/1 · 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 226012 · Violation 1612220 · 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 226012 · 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.
- PermitZoning
Permit 241972 · COMPLETED
ONE STORY REAR ADDITION (17'X 18') WITH CLERESTORY (4'X 10') TO SINGLE FAMILY DWELLING AS PER PLAN
- PermitAddition
Permit 241974 · COMPLETED
ONE STORY REAR ADDITION (17'X 18') WITH CLERESTORY (4'X 10') TO SINGLE FAMILY DWELLING AS PER PLAN. BASEMENT IS TO BE USED FOR UTILITY ACCESS ONLY.
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, 8:48 AM 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)