Property report

4511-23 Walnut St

4 stories47,716 sqftCMX2built 1985

Property at a glanceApartment building

Individual owner on record

2026 assessment
$5.5M OPA value, not a listing price
2027 published assessment
$6.1M Future roll, not the current tax bill
Neighborhood area
Walnut Hill · Haddington Approximate · based on ZIP 19139
From above · selected parcel outlined; choose a neighboring polygon to open it — imagery © Esri, Maxar

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 $6,090,600. It is not yet the billed-year tax basis.

$0$5.0M$10M$6.1M2004200820122016202020242027
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 record48 events · exact dates, newest first
  1. CertificationEmergency and Standby Power Systems Certification
  2. CertificationFire Alarm Certification
  3. CertificationSprinkler Certification
  4. CertificationEmergency and Standby Power Systems Certification
  5. CertificationFire Alarm Certification
  6. PermitAddition and/or Alterations
  7. CertificationSprinkler Certification
  8. CertificationSprinkler Certification
  9. CertificationFire Alarm Certification
  10. CertificationFire Alarm Certification
  11. PermitAddition and/or Alteration
  12. PermitAlteration
  13. PermitPlumbing
  14. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  15. InspectionPRECOURT (likely: pre-court compliance inspection)
  16. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  17. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  18. L&I violationANNUAL CERT FIRE ALARM
  19. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  20. PermitElectrical
  21. PermitPlumbing
  22. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  23. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  24. L&I violationINT S-FLOOR REPAIR (Repair the interior floor)
  25. L&I violationINT S-FOODSTORAGE MAINT SANI
  26. L&I violationINT S-WALLS REPAIR/MAINT SANI
  27. L&I violationINT S-CLEAN/MAINT SANI, OWNER
  28. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  29. InspectionCI INSP
  30. InspectionCI INSP
  31. PermitAdministrative
  32. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  33. PermitElectrical
  34. PermitAdministrative
  35. L&I violationVIOL NONE FOUND
  36. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  37. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  38. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  39. PermitSuppression
  40. PermitPlumbing
  41. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  42. L&I violationANNUAL CERT FIRE ALARM
  43. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  44. PermitMajor alteration
  45. PermitMechanical
  46. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  47. InspectionCI INSP
  48. LicenseMERCY DOUGLASS HUMAN SERVICE RESIDENCE: Rental landlord or residential registration initially issued

Verify the public record

$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 $6,090,600. It is not the 2026 billed-year value.

Current City balanceCheck Tax Center

Payments, credits, interest, and the current amount due are maintained by the City.

OPA 881822440
Open Philadelphia Tax Center →Use “View period balance” to inspect each tax year.
Exemption classificationFull assessment exemption shown

2026 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.”

Property report

Commercial property

Apartment building, recorded in the City's multi-family category. The public record and owner trail follow.

What it is
Apartment building Apts 51-100 Units Masonry
Owner
Individual owner on record Individual name redacted
$ / sq ft
$128 assessed value ÷ interior sqft
Corridor
46th Street and vicinity city commercial corridor
Licensed units
61 active rental license
Interior area
47,716 sqft
Lot size
27,347 sqft
Stories
4
Built
1985
Zoning
CMX2

Block context

4500 block of Walnut St. Compare parcels, ownership, and public-record history.

See the whole block →

Next door: 4501-09 Walnut St  ·  4525l-37 Walnut St

Business licenses at this address Latest pull

What L&I has registered at this OPA parcel, newest initial license date first.

Open the City record ↗

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.

MERCY DOUGLASS HUMAN SERVICE RESIDENCEActive

Rental · Initial issue date Jun 14, 2004 · Filed expiration Feb 28, 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 48 dated rows
  1. CertificationEmergency and Standby Power Systems Certification

    Certification BC-2026-015878 · Certified

    Expires 2026-11-25

  2. CertificationFire Alarm Certification

    Certification BC-2026-015877 · Certified

    Expires 2026-11-25

  3. CertificationSprinkler Certification

    Certification BC-2025-014600 · Certified

    Expires 2026-05-29

  4. CertificationEmergency and Standby Power Systems Certification

    Certification BC-2025-000295 · Certified

    Expires 2025-11-07

  5. CertificationFire Alarm Certification

    Certification BC-2025-000294 · Certified

    Expires 2025-11-07

  6. PermitAddition and/or Alterations

    Permit MP-2024-001378 · Expired

    FOR THE REPLACEMENT OF ROOFTOP UNIT AND ASSOCIATED PIPING AS PER APPROVED PLANS. SEPARATE PERMITS REQUIRED FOR ALL OTHER WORK.

  7. CertificationSprinkler Certification

    Certification BC-2024-004308 · Certified

    Expires 2025-02-16

  8. CertificationSprinkler Certification

    Certification BC-2023-004846 · Certified

    Expires 2024-02-17

  9. CertificationFire Alarm Certification

    Certification BC-2023-012765 · Certified

    Expires 2024-01-03

  10. CertificationFire Alarm Certification

    Certification BC-2022-002657 · Certified

    Expires 2023-01-19

  11. PermitAddition and/or Alteration

    Permit EP-2021-003488 · Completed

    Surface wire only, in wiremold Install additional 51 living room ceiling luminaires, as typical, 36 bedroom ceiling luminaires, as typical, and switches, on existing circuits., typically less than 10 ft to existing switch locations. Installation in compliance with 2017 NEC and Philadelphia Electrical Codes. Standalone project, no other associated work, no Building Permit issued. AS PER NEC 2017

  12. PermitAlteration

    Permit 891784 · COMPLETED

    REPLACE (110) WINDOWS IN EXISTING OPENINGS. (MULTI-FAMILY)

  13. PermitPlumbing

    Permit 582176 · COMPLETED

    REPLACING EXISTING DCV BACKFLOW PREVENTOR WITH RPZ BACKFLOW PREVENTOR (WATTS 009, 3"), AND AIR GAP STRAINER- "THE INSTALLATION WILL COMPLY WITH THE PHILADELPHIA PLUMBING CODE 2004"

  14. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 371104 · 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.

  15. InvestigationPRECOURT (likely: pre-court compliance inspection)

    Case 318855 · CLOSED

    A follow-up before or during enforcement escalation; confirm the case sequence in the City file. City marked the record closed; open the case for the closing reason.

  16. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 318855 · 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.

  17. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 318855 · 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.

  18. ViolationANNUAL CERT FIRE ALARM

    Case 318855 · Violation 2479904 · Code FC-915.1/3 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  19. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 318855 · 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.

  20. PermitElectrical

    Permit 378071 · COMPLETED

    REPLACE 44 FLUORESCENT FIXTURES, 13 EXIT SIGNS, 22 STAIRCASE FIXTURES, 11 OUTSIDE HPS LIGHTS. INSTALL 122 AIR CYCLER SWITCHES COMPLETE WITH WIRING FOR EXHAUST FANS IN BATHROOMS AND KITCHENS AS PER 2008 NEC(COMMERCIAL)(WEST DIST)

  21. PermitPlumbing

    Permit 366649 · COMPLETED

    2-100 GAL WATER HEATERS

  22. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 270433 · 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.

  23. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 270433 · 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.

  24. ViolationINT S-FLOOR REPAIR (Repair the interior floor)

    Case 270433 · Violation 2053657 · Code PM-305.3/2 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  25. ViolationINT S-FOODSTORAGE MAINT SANI

    Case 270433 · Violation 2053658 · Code PM-305.4/1 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  26. ViolationINT S-WALLS REPAIR/MAINT SANI

    Case 270433 · Violation 2053659 · Code PM-305.3/4 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  27. ViolationINT S-CLEAN/MAINT SANI, OWNER

    Case 270433 · Violation 2053656 · Code PM-305.1/2 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  28. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 270433 · 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.

  29. InvestigationCI INSP

    Case 61490 · PASSED

    The cited inspection visit was marked passed.

  30. InvestigationCI INSP

    Case 61490 · FAILED

    The cited inspection visit was marked failed; later rows may show follow-up or resolution.

  31. PermitAdministrative

    Permit 218588 · COMPLETED

    L.O. FOR GROUND FLOOR RESIDENT'S DINING ROOM / COMMUNITY ROOM AS PART OF RESIDENTIAL APARTMENTS FOR THE ELDERLY TO INCLUDE 10 ASSISTED LIVING UNITS

  32. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 131979 · 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.

  33. PermitElectrical

    Permit 129855 · COMPLETED

    REWIRE COMMUNITY AREA AND TEN (10) APARTMENTS (WEST DIST)

  34. PermitAdministrative

    Permit 129808 · COMPLETED

    ADMENDMENT TO PERMIT#82643 AS PER DRAWINGS

  35. ViolationVIOL NONE FOUND

    Case 139374 · Violation 777432 · Code A-000.0/1 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  36. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 131979 · 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.

  37. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 139374 · 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.

  38. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 50457 · 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.

  39. PermitSuppression

    Permit 111844 · COMPLETED

    SPRINKLER SYSTEM

  40. PermitPlumbing

    Permit 100916 · COMPLETED

    RENOVATIONS TO 10 DWELLING UNITS.

  41. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 131979 · 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.

  42. ViolationANNUAL CERT FIRE ALARM

    Case 131979 · Violation 783868 · Code FC-914.1/3 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  43. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 131979 · 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.

  44. PermitMajor alteration

    Permit 82643 · COMPLETED

    INTERIOR RENOVATIONS

  45. PermitMechanical

    Permit 91470 · COMPLETED

    INTERIOR RENOVATIONS

  46. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 50457 · 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.

  47. InvestigationCI INSP

    Case 61490 · FAILED

    The cited inspection visit was marked failed; later rows may show follow-up or resolution.

  48. License issue eventMERCY DOUGLASS HUMAN SERVICE RESIDENCE: Rental landlord or residential registration initially issued

    License 217874 · Active

    License event. Registration does not prove present operation or storefront occupancy.

Where this comes from

Methodology & freshness

This report was assembled Jul 24, 2026, 6:24 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)