Multi-family report

131 N 20th St

4 stories6,018 sqftRM1built 1900

Property at a glanceApartment building

Owner-occupancy signal

2026 assessment
$1.9M OPA value, not a listing price
From above · selected parcel outlined; choose a neighboring polygon to open it — imagery © Esri, Maxar
Open L&I record

4 violation rows marked OPEN in 1 active case

The actual City titles, code sections, case posture, and latest recorded inspections are shown here instead of only an aggregate count.

Open City history ↗
Case CF-2026-076826

Notice Of Violation

IN VIOLATION

Opened Jun 26, 2026 · Latest inspection FAILED · Jun 26, 2026

  • Suppression System Testing & MaintenanceF-903.5
  • Periodic TestingF-901.6.4
  • Rental License Multi Family (R2)9-3902 (2)
  • Exterior Area WeedsPM15-302.4

OPEN is the status in the fetched L&I file, not a new inspection by BlockReport. Read the notice for the cited condition and required correction, then verify the live case with L&I.

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.

$0$1.0M$2.0MZIP 19103 (Rittenhouse · Logan Square) median$1.4M2004200820122016202020242027
Property assessmentBlock median & rangeZIP 19103 (Rittenhouse · Logan Square) 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 record36 events · exact dates, newest first
  1. L&I violationSUPPRESSION SYSTEM TESTING & MAINTENANCE
  2. L&I violationPERIODIC TESTING
  3. L&I violationRENTAL LICENSE MULTI FAMILY (R2)
  4. L&I violationEXTERIOR AREA WEEDS
  5. InspectionL&I investigation
  6. LicenseSTEPHEN JAY TAI & DALE YOU: Rental landlord or residential registration marked closed
  7. LicenseSTEPHEN JAY & YOU DALE TAI: Rental landlord or residential registration marked inactive
  8. LicenseSTEPHEN JAY TAI & DALE YOU: Rental landlord or residential registration initially issued
  9. PermitElectrical
  10. LicenseSTEPHEN JAY & YOU DALE TAI: Rental landlord or residential registration initially issued
  11. PermitMajor alteration
  12. PermitZoning/use
  13. PermitElectrical
  14. LicenseMOORE COLLEGE TREASURER: Rental landlord or residential registration marked inactive
  15. PermitSuppression
  16. PermitPlumbing
  17. PermitMajor alteration
  18. PermitUse
  19. AppealZoning board appeal
  20. PermitPlumbing
  21. PermitSuppression
  22. PermitElectrical
  23. PermitElectrical
  24. InspectionBP_BLDG
  25. L&I violationPERMB- WORK NOT SAME AS PERMIT
  26. L&I violationLISTED CONDIT DOES NOT COMPLY
  27. L&I violationPERMB- CEILING RATED LESS
  28. InspectionBP_BLDG
  29. PermitPlumbing
  30. PermitMechanical
  31. PermitMajor alteration
  32. PermitAddition
  33. PermitZoning/use
  34. AppealZoning board appeal
  35. PermitDemolition
  36. LicenseMOORE COLLEGE TREASURER: Rental landlord or residential registration initially issued

Flags: 4 L&I violation rows marked OPEN · 2 zoning/board appeals on record. Informational only. Not investment advice or a consumer report (FCRA).

Verify the public record

$26,049/year estimated property tax

2026 taxable assessment $1,860,900 × 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 $1,445,500. 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 083088905
Open Philadelphia Tax Center →Use “View period balance” to inspect each tax year.
Exemption classificationNo exemption shown

2026 taxable assessment equals the full assessed value.

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.”

Where the record looks off

Conflicts in City paperwork. Flags on the data, not the property.

"Built 1900" is usually a placeholder

Philadelphia records use 1900 as a stand-in when the real construction year was never documented. Treat the age as unknown, not as 120+ years.

The property, on paper

OPA physical field record.

Stories
4
Interior
6,018 sqft livable area
Lot
2,496 sqft
Basement
Basement city code J
Heat
Hot water / radiators city code B
Central air
Yes
Garage
2 spaces
Exterior condition
Above average city code 3
Interior condition
Above average city code 3
Quality grade
B assessor's grade
Zoning
RM1 city zoning code
Zoning appeals
2 CLOSED · Granted with conditions · 2012

OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.

Block context

100 block of N 20th St. Compare parcels, ownership, and public-record history.

See the whole block →

Next door: 129 N 20th St  ·  127 N 20th 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 25, 2026.

Landlord and residential filings

These are property registrations or landlord filings, not businesses operating at this address.

STEPHEN JAY TAI & DALE YOUClosed

Rental · Initial issue date Jul 31, 2017 · Terminal license date Jul 30, 2021

STEPHEN JAY & YOU DALE TAIInactive

Rental · Initial issue date Feb 27, 2015 · Terminal license date Jun 29, 2021

MOORE COLLEGE TREASURERInactive

Rental · Initial issue date Dec 18, 2004 · Terminal license date Dec 22, 2012

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 36 dated rows
  1. ViolationSUPPRESSION SYSTEM TESTING & MAINTENANCE

    Case CF-2026-076826 · Violation VI-2026-047328 · Code F-903.5 · OPEN

    The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.

  2. ViolationPERIODIC TESTING

    Case CF-2026-076826 · Violation VI-2026-047329 · Code F-901.6.4 · OPEN

    The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.

  3. ViolationRENTAL LICENSE MULTI FAMILY (R2)

    Case CF-2026-076826 · Violation VI-2026-047330 · Code 9-3902 (2) · OPEN

    The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.

  4. ViolationEXTERIOR AREA WEEDS

    Case CF-2026-076826 · Violation VI-2026-047331 · Code PM15-302.4 · OPEN

    The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.

  5. InvestigationL&I investigation

    Case CF-2026-076826 · FAILED

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

  6. License terminal eventSTEPHEN JAY TAI & DALE YOU: Rental landlord or residential registration marked closed

    License 747214 · Closed

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

  7. License terminal eventSTEPHEN JAY & YOU DALE TAI: Rental landlord or residential registration marked inactive

    License 656522 · Inactive

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

  8. License issue eventSTEPHEN JAY TAI & DALE YOU: Rental landlord or residential registration initially issued

    License 747214 · Closed

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

  9. PermitElectrical

    Permit 632663 · COMPLETED

    INSTALL RECEPTACLE AND LIGHT FIXTURE PER 2008 NEC (SFD)

  10. License issue eventSTEPHEN JAY & YOU DALE TAI: Rental landlord or residential registration initially issued

    License 656522 · Inactive

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

  11. PermitMajor alteration

    Permit 539055 · COMPLETED

    NEW ROOF DECK ABOVE EXISTING THREE STORY RESIDENTIAL BLDG WITH FOUR UNITS

  12. PermitZoning/use

    Permit 525488 · COMPLETED

    NEW ROOF DECK ABOVE EXISTING 3 STORY RESIDENTAIL BLDG

  13. PermitElectrical

    Permit 424044 · COMPLETED

    INSTALL (19) OUTLETS, (22) LIGHTS, (13) SWITCHES, (5) SMOKE DECTORS AS PER 2008 NEC IN FOUR FAMILY DWELLING.

  14. License terminal eventMOORE COLLEGE TREASURER: Rental landlord or residential registration marked inactive

    License 215038 · Inactive

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

  15. PermitSuppression

    Permit 428275 · COMPLETED

    RELOCATE 10 EXISTING SRINKLER HEADS.

  16. PermitPlumbing

    Permit 409363 · COMPLETED

    PIPING & INSTALLING 1 WC, 1 LAV, 1 WASHING MACHINE, 1 SHOWER STALL, AND 1 HAND SINK

  17. PermitMajor alteration

    Permit 394331 · COMPLETED

    FOR THE INTERIOR RENOVATION OF THE BASEMENT OF AN EXISTING FOUR FAMILY DWELLING TO INCLUDE TWO NEW BASEMENT ACCESS STAIRS AS PER THE SUBMITTED PLAN. PLUMBING, ELECTRICAL, AND MECHANICAL WORK REQUIRES ADDITIONAL PERMITS. CALL THE INSPECTOR PRIOR TO STARTING WORK. THE OWNER IS ACTING AS CONTRACTOR FOR HIS PRIMARY RESIDENCE.

  18. PermitUse

    Permit 377117 · COMPLETED

    CHANGE USE OF EXISTING CELLAR FROM UTILITIES TO RECREATIONAL SPACE TO INCLUDE MEDIA ROOM (NO COMPLETE BATHROOM PER PROVISO) AS PART OF THE SINGLE FAMILY ON THE 1ST FLOOR TO BE A (4) FAMILY DWELLING.

  19. AppealZoning board appeal

    Appeal 16997 · CLOSED · Granted with conditions

    Related permit 377117 · PERMIT FOR THE EXTENSION OF THE DWELLING FROM 1ST FLOOR TO THE CELLAR FOR AUXILIARY RECREATION SPACE TO INCLUDE A MEDIA ROOM, REST ROOM, LAUNDRY ROOM AS PART OF A FOUR(4) FAMILY DWELLING WITH EXISTING PATIO AT GRADE NOT ROOFED OVER AND INT

  20. PermitPlumbing

    Permit 336468 · COMPLETED

    INSTALL (3) 3/4" WATER DISTRIBUTION LINES (4-FAMILY DWG)

  21. PermitSuppression

    Permit 302802 · COMPLETED

    INSTALL AUTOMATIC SPRINKLER SYSTEM THROUGHOUT BUILDING.

  22. PermitElectrical

    Permit 313187 · COMPLETED

    110 REC, (18) 110V SMK DETECTORS, 4 COMBO 110V SMK/CARBON DETECTORS, 75 SWITCHES, 133 LIGHTS, 4 DISP0OSALS, 600 AMP INCOMING SERVICE, 100 AMP HOUSE PANEL AND FEEDER, (4) 200 AMP APARTMENT PANELS AND FEEDERS,AS PER 2008 NEC, NO FIRE ALARM

  23. PermitElectrical

    Permit 319147 · COMPLETED

    INSTALL MONITORED AUTOMATIC FIRE ALARM THROUGHOUT AS PER NFPA-72 (CC DIST)

  24. InvestigationBP_BLDG

    Case 258800 · PASSED

    The cited inspection visit was marked passed.

  25. ViolationPERMB- WORK NOT SAME AS PERMIT

    Case 258800 · Violation 1889405 · Code A-302.10/2 · COMPLIED

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

  26. ViolationLISTED CONDIT DOES NOT COMPLY

    Case 258800 · Violation 1889407 · Code A-501.1/5 · COMPLIED

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

  27. ViolationPERMB- CEILING RATED LESS

    Case 258800 · Violation 1889406 · Code A-302.10/23 · COMPLIED

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

  28. InvestigationBP_BLDG

    Case 258800 · FAILED

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

  29. PermitPlumbing

    Permit 308903 · COMPLETED

    INSTALLATION OF THE FOLLOWING 5 WATERCLOSETS,5 SINKS,4 KITCHEN SINKS

  30. PermitMechanical

    Permit 308389 · COMPLETED

    INSTALL (4) TRANE 2 TON CAPACITY HEAT PUMP UNITS WITH DUCTWORKALL WORK TO BE SELF CONTAINED WITHOUT EACH UNIT. NO PENETRATIONS OF FIRE RATED ASSEMBLIES.

  31. PermitMajor alteration

    Permit 296326 · COMPLETED

    INTERIOR RENOVATION FOR THE USE OF A 4 FAMILY DWELLING.

  32. PermitAddition

    Permit 303828 · COMPLETED

    NEW 2ND FL ADDITION WITH ROOF DECK REAR..DETAIL AS PER PLANS.

  33. PermitZoning/use

    Permit 277407 · COMPLETED

    ADDITION TO EXISTING STRUCTURE FOR USE AS A FOUR FAMILY DWELLING.

  34. AppealZoning board appeal

    Appeal 11783 · CLOSED · Granted with conditions

    Related permit 277407 · PERMIT FOR THE ERECTION OF A THIRD STORY ADDITION (MAXIMUM HEIGHT NTE 33 FEET), FOR THE ERECTION OF SECOND STORY ADDITION(MAXIMUM HEIGHT NTE 23 FEET) WITH A ROOF DECK ABOVE WITH A 42 INCH RAILING, TO AN EXISTING FOUR/THREE/TWO/ONE STORY STR

  35. PermitDemolition

    Permit 279970 · COMPLETED

    INTERIOR DEMOLITION OF NON-STRUCTURAL WALLS AND FIXTURS.

  36. License issue eventMOORE COLLEGE TREASURER: Rental landlord or residential registration initially issued

    License 215038 · Inactive

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

Where this comes from

Methodology & freshness

This report was assembled Jul 26, 2026, 6:35 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.

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