House report

4912 Knorr St

Research this property with Analyst →

4 bd1 ba3 stories1,302 sqftRSA5built 1920

Property at a glanceHouse

Individual, other or unknown mailing address

2026 assessment
$177K OPA value, not a listing price
From above · selected parcel outlined; choose a neighboring polygon to open it — imagery © Esri, Maxar

Assessment and City record timeline

Published City assessments for this house 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$125K$250KZIP 19135 (Tacony · Wissinoming) median$185K2004200820122016202020242027
Property assessmentBlock median & rangeZIP 19135 (Tacony · Wissinoming) medianAssessmentDeed / saleL&I violationInspectionLicense

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. LicenseALKO Management: Rental landlord or residential registration marked inactive
  2. InspectionL&I investigation
  3. L&I violationEXTERIOR AREA WEEDS
  4. InspectionL&I investigation
  5. LicenseKnorr 4912 19135 LP: Rental landlord or residential registration initially issued
  6. LicenseALKO Management: Rental landlord or residential registration initially issued
  7. InspectionPRECOURT (likely: pre-court compliance inspection)
  8. Deed / saleDeed / sale $69K
  9. L&I violationCLIP VIOLATION NOTICE
  10. L&I violationHIGH WEEDS-CUT
  11. L&I violationLICENSE - RENTAL PROPERTY
  12. L&I violationCLIP VIOLATION NOTICE
  13. InspectionPRECOURT (likely: pre-court compliance inspection)
  14. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  15. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  16. L&I violationEXT S-CORNICE BARGEBOARD DEFEC
  17. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  18. LicenseIOSLAV AND SVETLANA STARIKOV: Rental landlord or residential registration marked inactive
  19. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  20. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  21. L&I violationLICENSE-RES GENERAL
  22. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  23. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  24. LicenseJEAN PAUL GULLE: Rental landlord or residential registration marked inactive
  25. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  26. L&I violationVACANT PROP STANDARD (likely: vacant-property enforcement standard)
  27. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  28. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  29. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  30. L&I violationSD-SMOKE BATTERY OCCUPANT
  31. L&I violationPROSEC- EMERG IMMED RI
  32. L&I violationPROSEC- STD INFO (likely: Standard enforcement or prosecution notice)
  33. L&I violationINT S-CEILING REPAIR/MAINT SAN
  34. L&I violationINT S-FLOOR REPAIR (Repair the interior floor)
  35. L&I violationEXT S-WALLS REPAIR/MAINTAIN
  36. L&I violationCO DETECTOR NEEDED (Carbon-monoxide detector required)
  37. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  38. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  39. L&I violationPROSEC- STD INFO (likely: Standard enforcement or prosecution notice)
  40. L&I violationCO DETECTOR NEEDED (Carbon-monoxide detector required)
  41. L&I violationPROSEC- EMERG IMMED RI
  42. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  43. InspectionL_CLIP
  44. InspectionL_CLIP
  45. LicenseIOSLAV AND SVETLANA STARIKOV: Rental landlord or residential registration initially issued
  46. Deed / saleDeed / sale $85K
  47. LicenseJEAN PAUL GULLE: Rental landlord or residential registration initially issued
  48. Deed / saleDeed / sale $40K

Flags: active rental license. Informational only. Not investment advice or a consumer report (FCRA).

Verify the public record

$2,478/year estimated property tax

2026 taxable assessment $177,000 × 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 $184,800. 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 412016100
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.”

The property, on paper

OPA physical field record.

Bedrooms
4
Bathrooms
1
Stories
3
Interior
1,302 sqft livable area
Lot
1,399 sqft
Heat
Undetermined city code H
Central air
No
Exterior condition
Average city code 4
Interior condition
Average city code 4
Quality grade
C+ assessor's grade
Zoning
RSA5 city zoning code

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

Block context

4900 block of Knorr St. Compare parcels, ownership, and public-record history.

See the whole block →

Next door: 4910 Knorr St  ·  4914 Knorr 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.

Knorr 4912 19135 LPActive

Rental · Initial issue date May 8, 2019 · Filed expiration May 7, 2027

ALKO ManagementInactive

Rental · Initial issue date Aug 2, 2018 · Terminal license date Sep 30, 2020

IOSLAV AND SVETLANA STARIKOVInactive

Rental · Initial issue date Mar 19, 2005 · Terminal license date Apr 29, 2015

JEAN PAUL GULLEInactive

Rental · Initial issue date Feb 4, 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 48 dated rows
  1. License terminal eventALKO Management: Rental landlord or residential registration marked inactive

    License 784917 · Inactive

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

  2. InvestigationL&I investigation

    Case CF-2020-043236 · PASSED

    The cited inspection visit was marked passed.

  3. ViolationEXTERIOR AREA WEEDS

    Case CF-2020-043236 · Violation VI-2020-023025 · Code PM15-302.4 · COMPLIED

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

  4. InvestigationL&I investigation

    Case CF-2020-043236 · FAILED

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

  5. License issue eventKnorr 4912 19135 LP: Rental landlord or residential registration initially issued

    License 811735 · Active

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

  6. License issue eventALKO Management: Rental landlord or residential registration initially issued

    License 784917 · Inactive

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

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

    Case 495907 · PASSED

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

  8. Recorded transfer$69K transfer

    2018

  9. ViolationCLIP VIOLATION NOTICE

    Case 606798 · Violation 4469309 · Code CP-01 · COMPLIED

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

  10. ViolationHIGH WEEDS-CUT

    Case 606798 · Violation 4469310 · Code CP-312A · COMPLIED

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

  11. ViolationLICENSE - RENTAL PROPERTY

    Case 587943 · Violation 4426547 · Code CP-101 · COMPLIED

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

  12. ViolationCLIP VIOLATION NOTICE

    Case 587943 · Violation 4426546 · Code CP-01 · COMPLIED

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

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

    Case 495907 · FAILED

    A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked failed; later rows may show follow-up or resolution.

  14. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 495907 · 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.

  15. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 495907 · 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.

  16. ViolationEXT S-CORNICE BARGEBOARD DEFEC

    Case 495907 · Violation 3827475 · Code PM-304.5/3 · COMPLIED

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

  17. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 495907 · 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. License terminal eventIOSLAV AND SVETLANA STARIKOV: Rental landlord or residential registration marked inactive

    License 310451 · Inactive

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

  19. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 439030 · 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.

  20. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 439030 · 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.

  21. ViolationLICENSE-RES GENERAL

    Case 439030 · Violation 3275185 · Code PM-102.0/1 · COMPLIED

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

  22. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 439030 · 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.

  23. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 221153 · 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.

  24. License terminal eventJEAN PAUL GULLE: Rental landlord or residential registration marked inactive

    License 262457 · Inactive

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

  25. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 221153 · 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.

  26. ViolationVACANT PROP STANDARD (likely: vacant-property enforcement standard)

    Case 221153 · Violation 1553635 · Code PM-306.0/1 · COMPLIED

    A legacy L&I label associated with vacant-property requirements. It may concern licensing, securing, or maintaining a vacant structure; the notice and cited code control, and this row alone does not prove the property is vacant now. City marked this violation complied with; check the resolution date and live case for what was accepted.

  27. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 218380 · 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.

  28. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 217099 · 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.

  29. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 221153 · 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.

  30. ViolationSD-SMOKE BATTERY OCCUPANT

    Case 217099 · Violation 1501921 · Code FC-907.3/28 · COMPEXCP

  31. ViolationPROSEC- EMERG IMMED RI

    Case 217099 · Violation 1501919 · Code A-503.1/2 · COMPEXCP

  32. ViolationPROSEC- STD INFO (likely: Standard enforcement or prosecution notice)

    Case 217099 · Violation 1501920 · Code A-503.2/2 · COMPEXCP

    Legacy L&I shorthand; the case notice contains the actual required correction and deadlines.

  33. ViolationINT S-CEILING REPAIR/MAINT SAN

    Case 218380 · Violation 1501910 · Code PM-305.3/3 · COMPEXCP

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

    Case 218380 · Violation 1501912 · Code PM-305.3/2 · COMPEXCP

  35. ViolationEXT S-WALLS REPAIR/MAINTAIN

    Case 218380 · Violation 1501913 · Code PM-304.3/1 · COMPEXCP

  36. ViolationCO DETECTOR NEEDED (Carbon-monoxide detector required)

    Case 218380 · Violation 1501911 · Code FC-908.7/1 · COMPEXCP

  37. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 218380 · 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.

  38. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 217099 · 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. ViolationPROSEC- STD INFO (likely: Standard enforcement or prosecution notice)

    Case 218380 · Violation 1501908 · Code A-503.2/2 · COMPEXCP

    Legacy L&I shorthand; the case notice contains the actual required correction and deadlines.

  40. ViolationCO DETECTOR NEEDED (Carbon-monoxide detector required)

    Case 218380 · Violation 1501909 · Code FC-908.7/1 · COMPEXCP

  41. ViolationPROSEC- EMERG IMMED RI

    Case 218380 · Violation 1501907 · Code A-503.1/2 · COMPEXCP

  42. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 217099 · 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.

  43. InvestigationL_CLIP

    Case 39959 · CLOSED

    City marked the record closed; open the case for the closing reason.

  44. InvestigationL_CLIP

    Case 39959 · FAILED

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

  45. License issue eventIOSLAV AND SVETLANA STARIKOV: Rental landlord or residential registration initially issued

    License 310451 · Inactive

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

  46. Recorded transfer$85K transfer

    2005

  47. License issue eventJEAN PAUL GULLE: Rental landlord or residential registration initially issued

    License 262457 · Inactive

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

  48. Recorded transfer$40K transfer

    2004

Where this comes from

Methodology & freshness

This report was assembled Jul 24, 2026, 8:23 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)