2026 assessment
$442K
OPA value, not a listing price
Multi-family report
424 Diamond St
4 bd1,592 sqftRM1built 2011
Property at a glanceApartment building
Entity-held
ZIP 19122 area
Olde Kensington · North Philadelphia
400 block of Diamond St
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$90K 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$90K 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$90K 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$265K 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$265K 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$265K 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$265K 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$481K 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$481K 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$442K 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$442K 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$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 ↗
- Permit · 2010-02-25Zoning/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 · 2010-03-15ZoningThis 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 · 2010-03-22New 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 · 2010-11-29PlumbingThis 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 · 2010-12-21PlumbingThis 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 · 2011-02-08SuppressionThis 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 · 2011-06-03MechanicalThis 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 · 2011-06-14ElectricalThis 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 ↗
- L&I violation · 2025-10-28SUPPRESSION SYSTEM TESTING & MAINTENANCEA 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 · 2025-10-28L&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 · 2025-12-03L&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 · 2026-01-07L&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 · 2026-02-11L&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 ↗
- Certification · 2023-04-27Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2023-06-01Sprinkler CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2024-04-29Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2024-06-12Sprinkler CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2025-04-02Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2025-08-28Sprinkler CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Certification · 2026-03-26Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
- Appeal · 2010-01-20Zoning 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 ↗
- Appeal · 2026-06-23ZBA Permit Denial - VarianceA 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 19122 (Olde Kensington · North Philadelphia) medianAssessmentL&I violationAppealPermitInspectionCertification
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
- AppealZBA Permit Denial - Variance
- CertificationFire Alarm Certification
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationSUPPRESSION SYSTEM TESTING & MAINTENANCE
- InspectionL&I investigation
- CertificationSprinkler Certification
- CertificationFire Alarm Certification
- CertificationSprinkler Certification
- CertificationFire Alarm Certification
- CertificationSprinkler Certification
- CertificationFire Alarm Certification
- PermitElectrical
- PermitMechanical
- PermitSuppression
- PermitPlumbing
- PermitPlumbing
- PermitNew construction
- PermitZoning
- PermitZoning/use
- AppealZoning board appeal
Flags: 2 zoning/board appeals on record. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$0/year estimated property tax
2026 taxable assessment $0 × 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 $383,000. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 1832178052026 OPA shows a zero or de minimis taxable assessment. The open assessment split does not establish the exemption's legal basis, continuing eligibility, or treatment after a transfer.
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
Interior
1,592 sqft
livable area
Lot
1,860 sqft
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
RM1
city zoning code
Zoning appeals
2
Closed · Withdrawn · 2026
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Recorded owner
Who's behind it
Philadelphia Housing Auth · corporate / LLC owner
• Owns 4773 properties across Philadelphia under this name, assessed at $1.4B combined
• Tax bills mail to 2013 Ridge Ave, Philadelphia PA, 19121
Block context
400 block of Diamond St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 422 Diamond St · 420 Diamond 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.
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
- AppealZBA Permit Denial - Variance
Appeal 23422 · Closed · Withdrawn
PERMIT FOR A ROOMING UNIT FOR MAXIMUM OF ONE (1) PERSON (SINGLE ROOM RESIDENCE) IN THE SAME BUILDING WITH EXISTING FOUR (4) FAMILY DWELLING AS PREVIOUSLY APPROVED IN AN EXISTING STRUCTURE.
- CertificationFire Alarm Certification
Certification BC-2026-010549 · Certified
Expires 2027-03-26
- InvestigationL&I investigation
Case CF-2025-118499 · PASSED
The cited inspection visit was marked passed.
- InvestigationL&I investigation
Case CF-2025-118499 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2025-118499 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationSUPPRESSION SYSTEM TESTING & MAINTENANCE
Case CF-2025-118499 · Violation VI-2025-085075 · Code F-903.5 · COMPLIED
Resolution: COMPLIED - BY ENFORCEMENT ACTION City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2025-118499 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- CertificationSprinkler Certification
Certification BC-2025-026781 · Deficient
- CertificationFire Alarm Certification
Certification BC-2025-008629 · Certified
Expires 2026-04-02
- CertificationSprinkler Certification
Certification BC-2024-018326 · Certified
Expires 2025-06-12
- CertificationFire Alarm Certification
Certification BC-2024-012645 · Certified
Expires 2025-04-29
- CertificationSprinkler Certification
Certification BC-2023-012545 · Certified
Expires 2024-06-01
- CertificationFire Alarm Certification
Certification BC-2023-010348 · Certified
Expires 2024-04-27
- PermitElectrical
Permit 338053 · COMPLETED
SEE ELECTRICAL DRAWINGS AND FIRE ALARM DRAWINGS,SIDE TO SIDE UNITS,400AMP SERVICE,LIGHT FIXTURES,SWITCHES RECEPTACLES,HVAC,120VOLTS SMOKE DETECTORS,KITCHEN EQUIPTMENT TELE/DATA.CATV LOW VOLTAGE FIRE ALARM SYSTEM AS PER 2008 NEC,NFPA-72
- PermitMechanical
Permit 341575 · COMPLETED
INSTALL FIVE PACKAGED TERMINAL AIR CONDITIONING UNITS, ONE SPLIT SYSTEM HEAT PUMP, TOILET ROOM EXHAUST DUCT, A DOMESTIC KITCHEN HOOD EXHAUST DUCT, AND A RESIDENTIAL DRYER VENT IN A NEWLY CONSTRUCTED 4-UNIT CONGREGATE LIVING FACILITY IN ACCORDANCE WITH PLANS APPROVED UNDER AP #341571.
- PermitSuppression
Permit 318196 · COMPLETED
INSTALL NEW SPRINKLER SYSTEM WITH NEW BACKFLOW PREVENTOR
- PermitPlumbing
Permit 317409 · COMPLETED
INSTALL 6" LATERAL AND CURB TRAP, 1-1/2" WATER SERVICE TO CURB
- PermitPlumbing
Permit 313822 · COMPLETED
4 UNIT PHA SCATTERED SITE HOUSING
- PermitNew construction
Permit 246920 · COMPLETED
ERECTION OF A 4 FAMILY DWELLING
- PermitZoning
Permit 246065 · COMPLETED
1ST FL TO BE COMMON AREA, TWO RESIDENTIAL DWELLING UNITS, ELEVATOR AND 2ND FL. TO BE A STAFF ROOM AND TWO RESIDENTIAL DWELLING UNITS, ELEVATOR. SUBDIVIDING LOT LINES TO CREATE 1 LOT FROM 2. ERECT 6' FENCE.
- PermitZoning/use
Permit 263855 · COMPLETED
FOR THE ERECTION OF A FOUR FAMILY DWELLING.
- AppealZoning board appeal
Appeal 10743 · CLOSED · Granted
Related permit 246065 · PERMIT FOR THE PARTIAL DEMOLITION OF ALL EXISTING STRUCTURE ON THE LOT AND FOR THE RELOCATION OF LOT LINE TO CREATE ONE (1) LOT FROM TWO (2)) LOTS AND FOR THE ERECTION OF A TWO (2) STORY DETACHED STRUCTURE MAX HEIGHT 20'2" FOR USE AS A FOUR
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, 7:55 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)