2026 assessment
$1.6M
OPA value, not a listing price
Apartment building report
1621 N 4th St
3 stories9,675 sqftRSA5built 2019
Property at a glanceApartment building
Or 1621 North 4th LLC
2027 published assessment
$1.6M
Future roll, not the current tax bill
Location
1600 block of N 4th St
ZIP 19122
Neighborhood area
Olde Kensington · North Philadelphia
Approximate · based on ZIP 19122
Assessment and City record timeline
The line tracks this property’s published City assessment. Markers show deeds, permits, inspections, licenses, violations, certifications, and appeals on their recorded dates. Select one to read the filing.
Assessments are tax-roll values, not sale prices or appraisals. OPA has published a 2027 assessment of $1,563,600. It is not yet the billed-year tax basis.
- OPA assessment · 2020$374K 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$1.1M 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$1.1M 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$1.6M 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$1.6M 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$1.6M 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$1.6M 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$1.6M 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 · 2018-10-18New 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 · 2019-04-01New 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 · 2019-06-04New Construction or AdditionsThis 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 · 2019-08-13New 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 · 2019-08-21New 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 ↗
- L&I violation · 2019-05-17PROPERLY REMOVE DEMO DEBRISA 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 · 2019-05-17STOP WORK ORDERA 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 · 2019-05-17TEMP CONST-COMPLY BLDG CODEA 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 · 2019-05-17BP_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 · 2022-04-20PERIODIC TESTINGA 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 · 2022-04-20SUPPRESSION 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 · 2022-04-20L&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 · 2020-05-06L&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 · 2022-07-19L&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 · 2023-01-27L&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 · 2023-11-14L&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 · 2025-02-26L&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 ↗
- License · 2020-07-30William Peter Stamos: 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 ↗
- Certification · 2023-09-12Sprinkler 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 · 2024-04-18Sprinkler 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 · 2024-11-14Fire 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 · 2024-11-14Fire 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 · 2025-03-14Sprinkler 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 · 2025-10-24Sprinkler 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 ↗
Property assessmentAssessmentL&I violationPermitInspectionLicenseCertification
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 record24 events · exact dates, newest first
- CertificationSprinkler Certification
- CertificationSprinkler Certification
- InspectionL&I investigation
- CertificationFire Alarm Certification
- CertificationFire Alarm Certification
- CertificationSprinkler Certification
- InspectionL&I investigation
- CertificationSprinkler Certification
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationPERIODIC TESTING
- L&I violationSUPPRESSION SYSTEM TESTING & MAINTENANCE
- InspectionL&I investigation
- LicenseWilliam Peter Stamos: Rental landlord or residential registration initially issued
- InspectionL&I investigation
- PermitNew Construction
- PermitNew Construction
- PermitNew Construction or Additions
- L&I violationPROPERLY REMOVE DEMO DEBRIS
- L&I violationSTOP WORK ORDER
- L&I violationTEMP CONST-COMPLY BLDG CODE
- InspectionBP_BLDG
- PermitNew Construction
- PermitNew Construction
Verify the public record
Property tax
$2,203/year estimated property tax
2026 taxable assessment $157,370 × 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 $1,563,600. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 8810066732026 OPA taxes $157,370 of $1,573,700 assessed. The assessment fields alone do not identify a program, approval date, expiration, or buyer eligibility.
See the assessment math →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.”
Building report
Apartment building
Apartment building, recorded in the City's apartments category. The public record and owner trail follow.
What it is
Apartment building
Apts 5-50 Units Masonry
Owner
Or 1621 North 4th LLC
$ / sq ft
$162
above the $147 median for 2,826 apartments parcels citywide
Licensed units
9
active rental license
Interior area
9,675 sqft
Lot size
4,277 sqft
Stories
3
Built
2019
Zoning
RSA5
Recorded owner
Who's behind it
Or 1621 North 4th LLC · corporate / LLC owner
• Tax bills mail to 165 East 72nd St 14c, New York NY, 10021 — outside Philadelphia
• Holds an active rental license for this address
Block context
1600 block of N 4th St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 1617-19 N 4th St · 1615 N 4th St
L&I license dates · data through Jul 25, 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 25, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
William Peter StamosActive
Rental · Initial issue date Jul 30, 2020 · Filed expiration Jul 29, 2027
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 24 dated rows
- CertificationSprinkler Certification
Certification BC-2026-000008 · Certified
Expires 2026-10-24
- CertificationSprinkler Certification
Certification BC-2025-007627 · Certified
Expires 2026-03-14
- InvestigationL&I investigation
Case CF-2022-033603 · PASSED
The cited inspection visit was marked passed.
- CertificationFire Alarm Certification
Certification BC-2024-030701 · Certified
Expires 2025-11-14
- CertificationFire Alarm Certification
Certification BC-2024-030697 · Certified
Expires 2025-11-14
- CertificationSprinkler Certification
Certification BC-2024-010982 · Certified
Expires 2025-04-18
- InvestigationL&I investigation
Case CF-2022-033603 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- CertificationSprinkler Certification
Certification BC-2023-020401 · Certified
Expires 2024-09-12
- InvestigationL&I investigation
Case CF-2022-033603 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2022-033603 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationPERIODIC TESTING
Case CF-2022-033603 · Violation VI-2022-026153 · Code F-901.6.4 · COMPLIED
Resolution: COMPLIED - LICENSE/CERTIFICATE/REPORT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationSUPPRESSION SYSTEM TESTING & MAINTENANCE
Case CF-2022-033603 · Violation VI-2022-026154 · Code F-903.5 · COMPLIED
Resolution: COMPLIED - LICENSE/CERTIFICATE/REPORT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2022-033603 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License issue eventWilliam Peter Stamos: Rental landlord or residential registration initially issued
License 847521 · Active
License event. Registration does not prove present operation or storefront occupancy.
- InvestigationL&I investigation
Case 685763 · PASSED
The cited inspection visit was marked passed.
- PermitNew Construction
Permit 1004254 · Completed
INSTALL (26) DUCTLESS MINISPLIT SYSTEMS WITH (9) CONDENSING UNITS. (MULTI-FAMILY)
- PermitNew Construction
Permit 988320 · Completed
INSTALL 800 1PH 120/240V AMP MAIN SERVICE INSTALL 10 GANG METER MODULE INSTALL ALL WIRING THROUGHOUT 9APTS HOUSE WIRING INSTALL FIRE ALARM SYSTEM PER 2008 NEC INSTALL 800 1PH 120/240V AMP MAIN SERVICE INSTALL 10 GANG METER MODULE INSTALL ALL WIRING THROUGHOUT 9APTS HOUSE WIRING INSTALL FIRE ALARM SYSTEM PER 2008 NEC
- PermitNew Construction or Additions
Permit 968224 · Completed
10 WATER CLOSETS, 10 LAVS, 9 BATHTUBS, 9 KITCHEN SINKS, 9 DISHWASHERS, 9 WASHER BOXES, CAST IRON AND COPPER THROUGHOUT, 2" DOMESTIC WATER SERVICE 6X4 CURB TRAP, 4" MAIN DRAIN.
- ViolationPROPERLY REMOVE DEMO DEBRIS
Case 685763 · Violation 229314501 · Code A-104.1/6 · COMPLIED
Resolution: COMPLIED - BY ENFORCEMENT ACTION City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationSTOP WORK ORDER
Case 685763 · Violation 229314502 · Code A-504.1/1 · COMPLIED
Resolution: COMPLIED - PERMIT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationTEMP CONST-COMPLY BLDG CODE
Case 685763 · Violation 229314503 · Code PM-310.1/1 · COMPLIED
Resolution: COMPLIED - PERMIT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationBP_BLDG
Case 685763 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitNew Construction
Permit 955109 · Completed
INSTALL NEW FIRE SUPPRESSION SYSTEM COMPLYING WITH NFPA 13 THROUGHOUT THE BUILDING TO INCLUDE 2" MAIN FIRE SERVICE LINE AND 3" AMES 2000SS BACKFLOW PREVENTION ASSEMBLY AS PER APPROVED PLANS. ALL WORK SHALL BE PERFORMED BY A FIRE SUPPRESSION CONTRACTOR LICENSED BY THE CITY OF PHILADELPHIA.
- PermitNew Construction
Permit 910650 · Completed
FOR THE ERECTION OF A NEW, THREE (3) STORY ATTACHED STRUCTURE WITH ROOF DECK ACCESSED BY PILOT HOUSES (TO ENCLOSE ACCESS STAIRS ONLY), WITH GROUP U AT GROUND FLOOR (PRIVATE PARKING), GROUP R-2 THROUGHOUT (NINE (9) DWELLING UNITS), AND A GROUP A-3 COMMON ROOF DECK, AS PER PLANS; SEPARATE PERMITS REQUIRED FOR ALL MEP/FSP WORK; BUILDING TO BE FULLY SPRINKLERED THROUGHOUT IN ACCORDANCE WITH NFPA 13; SEE AP#803920 FOR ZONING PERMIT.
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 26, 2026, 8:35 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)