Mixed-use property report

407 S 12th St

4 stories3,068 sqftRM1built 1920

Property at a glanceApartment building

407 S 12th Street LLC

2026 assessment
$758K OPA value, not a listing price
2027 published assessment
$782K Future roll, not the current tax bill
Neighborhood area
Queen Village · East Passyunk Approximate · based on ZIP 19147
From above · selected parcel outlined; choose a neighboring polygon to open it — imagery © Esri, Maxar
Open L&I record

1 violation row 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-2025-112092

New Use

IN VIOLATION

Opened Oct 10, 2025 · Latest inspection FAILED · Oct 10, 2025

  • New UseA-301.1/65

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

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 $782,300. It is not yet the billed-year tax basis.

$0$500K$1.0M$782K2006201020142018202220262027
Property assessmentAssessmentDeed / saleL&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 record43 events · exact dates, newest first
  1. InspectionL&I investigation
  2. L&I violationNEW USE
  3. CertificationFire Alarm Certification
  4. CertificationFire Alarm Certification
  5. InspectionL&I investigation
  6. InspectionL&I investigation
  7. L&I violationPLUMBING SYSTEMS- GENERAL
  8. InspectionL&I investigation
  9. CertificationFire Alarm Certification
  10. License407 S 12th Street: Rental landlord or residential registration initially issued
  11. InspectionL&I investigation
  12. PermitInterior Non-Load-Bearing Wall Demo.
  13. L&I violationPERME- INST/REPL/REPAIR WIRE (Electrical permit required for wiring installation, replacement, or repair)
  14. L&I violationPERMB- ALTER REPAIR INT PART (Building permit required for interior alteration or repair)
  15. InspectionBP_BLDG
  16. Deed / saleDeed / sale $1.1M
  17. LicenseMel 4 Properties LLC: Rental landlord or residential registration marked inactive
  18. LicenseMARLEN CORPORATION (AGT - MICHAEL YELSON): Rental landlord or residential registration marked inactive
  19. LicenseMel 4 Properties LLC: Rental landlord or residential registration initially issued
  20. Deed / saleDeed / sale $1.2M
  21. InspectionPRECOURT (likely: pre-court compliance inspection)
  22. InspectionPRECOURT (likely: pre-court compliance inspection)
  23. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  24. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  25. L&I violationEXT S-HANDRAIL MAINTAIN
  26. L&I violationFIRE-ELECT OPEN JUNCTION BOX
  27. L&I violationEGRESS-REP FIRE ESC/EXT STAIR
  28. L&I violationFIRE EQUIP-REMOVE IF DISCONT¿D
  29. L&I violationEXT-WINDOW MUST OPEN-RES
  30. L&I violationELEC-COVER PLATE DEFECTIVE-RES
  31. L&I violationINT A-EXTERMINATE, OWNER
  32. L&I violationINT S-WALLS REPAIR/MAINT SANI
  33. L&I violationANNUAL CERT FIRE ALARM
  34. L&I violationFIRE-PULL STATION SIGNS
  35. L&I violationFIRE-DOOR STAIR 1HR RATING
  36. L&I violationFIRE EXTING-INSTALL MAX 75FT
  37. L&I violationFIRE EXTING-INSTALL R2
  38. L&I violationFIRE EXTING-LABEL
  39. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  40. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  41. LicenseMARLEN CORPORATION (AGT - MICHAEL YELSON): Rental landlord or residential registration initially issued
  42. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  43. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)

Verify the public record

$10,606/year estimated property tax

2026 taxable assessment $757,700 × 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 $782,300. 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 871060000
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.”

Property report

Mixed-use property

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

1 open violation

What it is
Apartment building Str/Off+Apt 4 Sty Masonry
Owner
407 S 12th Street LLC
$ / sq ft
$255 assessed value ÷ interior sqft
Licensed units
4 active rental license
Interior area
3,068 sqft
Lot size
1,213 sqft
Stories
4
Built
1920
Zoning
RM1

Recorded owner

Who's behind it

407 S 12th Street LLC · corporate / LLC owner

• Tax bills mail to 26 Oxford Dr, Ivy Land PA, 18954 — outside Philadelphia
• Holds an active rental license for this address

Block context

400 block of S 12th St. Compare parcels, ownership, and public-record history.

See the whole block →

Next door: 405 S 12th St  ·  409 S 12th 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.

407 S 12th StreetActive

Rental · Initial issue date Nov 10, 2020 · Filed expiration Nov 9, 2026

Mel 4 Properties LLCInactive

Rental · Initial issue date Mar 13, 2018 · Terminal license date May 11, 2019

MARLEN CORPORATION (AGT - MICHAEL YELSON)Inactive

Rental · Initial issue date Apr 12, 2007 · Terminal license date Apr 29, 2018

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 42 dated rows
  1. InvestigationL&I investigation

    Case CF-2025-112092 · FAILED

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

  2. ViolationNEW USE

    Case CF-2025-112092 · Violation VI-2025-080889 · Code A-301.1/65 · OPEN

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

  3. CertificationFire Alarm Certification

    Certification BC-2025-018894 · Certified

    Expires 2026-07-16

  4. CertificationFire Alarm Certification

    Certification BC-2024-020988 · Certified

    Expires 2025-07-16

  5. InvestigationL&I investigation

    Case CF-2023-092366 · PASSED

    The cited inspection visit was marked passed.

  6. InvestigationL&I investigation

    Case CF-2023-092366 · FAILED

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

  7. ViolationPLUMBING SYSTEMS- GENERAL

    Case CF-2023-092366 · Violation VI-2023-067945 · Code PM15-504.1 · COMPLIED

    Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.

  8. InvestigationL&I investigation

    Case CF-2023-092366 · FAILED

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

  9. CertificationFire Alarm Certification

    Certification BC-2023-014093 · Certified

    Expires 2024-07-03

  10. License issue event407 S 12th Street: Rental landlord or residential registration initially issued

    License 855335 · Active

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

  11. InvestigationL&I investigation

    Case 726351 · PASSED

    The cited inspection visit was marked passed.

  12. PermitInterior Non-Load-Bearing Wall Demo.

    Permit GM-2020-004713 · Completed

    For minor construction work at the subject property in accordance with all applicable provisions of the Philadelphia Code, all references codes and standards, and the attached EZ Standard, where included. Deviation from this standard shall result in permit revocation. A separate permit from the Philadelphia Department of Streets is required for any sidewalk and street closures. All means of pedestrian protection required at the site in accordance with the Philadelphia Building Code Chapter 33 shall be in place prior to start of work.

  13. ViolationPERME- INST/REPL/REPAIR WIRE (Electrical permit required for wiring installation, replacement, or repair)

    Case 726351 · Violation 211994658 · Code A-301.1/51 · COMPLIED

    Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.

  14. ViolationPERMB- ALTER REPAIR INT PART (Building permit required for interior alteration or repair)

    Case 726351 · Violation 211994641 · Code A-301.1/4 · COMPLIED

    Resolution: COMPLIED - PERMIT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.

  15. InvestigationBP_BLDG

    Case 726351 · FAILED

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

  16. Recorded transfer$1.1M transfer

    2020

  17. License terminal eventMel 4 Properties LLC: Rental landlord or residential registration marked inactive

    License 769066 · Inactive

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

  18. License terminal eventMARLEN CORPORATION (AGT - MICHAEL YELSON): Rental landlord or residential registration marked inactive

    License 406486 · Inactive

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

  19. License issue eventMel 4 Properties LLC: Rental landlord or residential registration initially issued

    License 769066 · Inactive

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

  20. Recorded transfer$1.2M transfer

    2017

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

    Case 254863 · PASSED

    A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.

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

    Case 254863 · PASSED

    A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.

  23. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 254863 · 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.

  24. ViolationEXT S-HANDRAIL MAINTAIN

    Case 254863 · Violation 1913278 · Code PM-304.7/1 · COMPLIED

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

  25. ViolationFIRE-ELECT OPEN JUNCTION BOX

    Case 254863 · Violation 1913271 · Code FC-605.6/1 · COMPLIED

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

  26. ViolationEGRESS-REP FIRE ESC/EXT STAIR

    Case 254863 · Violation 1913272 · Code FC-1026.1/1 · COMPLIED

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

  27. ViolationFIRE EQUIP-REMOVE IF DISCONT¿D

    Case 254863 · Violation 1913273 · Code FC-901.4/4 · COMPLIED

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

  28. ViolationEXT-WINDOW MUST OPEN-RES

    Case 254863 · Violation 1913274 · Code PM-403.1/2 · COMPLIED

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

  29. ViolationELEC-COVER PLATE DEFECTIVE-RES

    Case 254863 · Violation 1913275 · Code PM-407.2/7 · COMPLIED

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

  30. ViolationINT A-EXTERMINATE, OWNER

    Case 254863 · Violation 1913276 · Code PM-303.5/3 · COMPLIED

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

  31. ViolationINT S-WALLS REPAIR/MAINT SANI

    Case 254863 · Violation 1913277 · Code PM-305.3/4 · COMPLIED

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

  32. ViolationANNUAL CERT FIRE ALARM

    Case 254863 · Violation 1913265 · Code FC-915.1/3 · COMPLIED

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

  33. ViolationFIRE-PULL STATION SIGNS

    Case 254863 · Violation 1913266 · Code FC-907.4/4 · COMPLIED

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

  34. ViolationFIRE-DOOR STAIR 1HR RATING

    Case 254863 · Violation 1913267 · Code FC-704.1/1 · COMPLIED

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

  35. ViolationFIRE EXTING-INSTALL MAX 75FT

    Case 254863 · Violation 1913268 · Code FC-906.1/1 · COMPLIED

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

  36. ViolationFIRE EXTING-INSTALL R2

    Case 254863 · Violation 1913269 · Code FC-906.2/1 · COMPLIED

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

  37. ViolationFIRE EXTING-LABEL

    Case 254863 · Violation 1913270 · Code FC-906.2/4 · COMPLIED

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

  38. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 254863 · 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.

  39. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 254863 · 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.

  40. License issue eventMARLEN CORPORATION (AGT - MICHAEL YELSON): Rental landlord or residential registration initially issued

    License 406486 · Inactive

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

  41. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 81973 · 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.

  42. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 81973 · 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.

Where this comes from

Methodology & freshness

This report was assembled Jul 25, 2026, 10:40 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)