2026 assessment
$184K
OPA value, not a listing price
House report
4504 Knorr St
2 stories1,088 sqftRSA3built 1935
Property at a glanceHouse
Individual, other or unknown mailing address
ZIP 19135 area
Tacony · Wissinoming
4500 block of Knorr St
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.
- OPA assessment · 2016$106K 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 · 2017$106K 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 · 2018$106K 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 · 2019$111K 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 · 2020$116K 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$116K 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$116K 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$144K 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$144K 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$184K 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$184K 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$190K 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 ↗
- Deed / sale · 2014Deed / sale $99KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Deed / sale · 2022Deed / sale $182KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- Permit · 2008-05-28AlterationThis 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 · 2008-05-28ZoningThis permit category usually covers the property’s allowed use, dimensions, occupancy, or site configuration. 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 · 2008-04-21PERMB- CONST ADDITIONA 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 · 2008-04-21BP_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 · 2010-06-25NON-REGULATED LACKS PERMIT (The cited activity or use lacked a required permit)The title alone does not identify the missing permit or prove the present use remains unauthorized.How L&I violations and orders work ↗
- L&I violation · 2010-06-25OBTAIN LIC INDICATED (Obtain the license identified in the notice)The shorthand does not identify the license type; open the case notice for that detail.How L&I violations and orders work ↗
- L&I violation · 2010-06-25CAL LO (Commercial Activity License required)Philadelphia Code §19-2602(1) requires a Commercial Activity License before conducting business in the city.How L&I violations and orders work ↗
- L&I violation · 2010-06-25CAL PROHIBITED CONDUCTA 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 · 2010-06-25NON-REGULATED LACKS PERMIT (The cited activity or use lacked a required permit)The title alone does not identify the missing permit or prove the present use remains unauthorized.How L&I violations and orders work ↗
- Inspection · 2010-06-25CEASE INSP (likely: cease-operations compliance inspection)Legacy inspection shorthand; verify whether a cease-operations order existed and its current status.What Philadelphia inspections check ↗
- Inspection · 2010-06-25BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- Inspection · 2010-06-25BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- Inspection · 2010-06-25BC INSP (likely: building-code inspection)Legacy inspection shorthand; confirm the inspection type and scope in the City case file.What Philadelphia inspections check ↗
- L&I violation · 2010-07-02LICENSE-RES SFD/2FDA 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 · 2010-07-02CEASE INSP (likely: cease-operations compliance inspection)Legacy inspection shorthand; verify whether a cease-operations order existed and its current status.What Philadelphia inspections check ↗
- Inspection · 2010-07-02HCEU INSP (Housing Code Enforcement Unit inspection)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.What Philadelphia inspections check ↗
- L&I violation · 2011-11-16LICENSE - RENTAL PROPERTYA 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 · 2011-11-16CLIP VIOLATION NOTICEA 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 · 2012-03-01CLIP VIOLATION NOTICEA 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 · 2012-03-01RUBBISH/GARBAGE EXTERIOR-OWNERA 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 · 2012-07-17CLIP VIOLATION NOTICEA 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 · 2012-07-17HIGH WEEDS-CUTA 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 · 2012-07-17POOL - STAGNANT WATERA 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 · 2014-05-13CLIP VIOLATION NOTICEA 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 · 2014-05-13RUBBISH/GARBAGE EXTERIOR-OWNERA 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 · 2014-05-13HIGH WEEDS-CUTA 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 · 2003-07-29L_INITIALA 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 · 2003-07-29L_INITIALA 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 · 2004-02-27L_COMPLYA 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 · 2008-05-29BP_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 ↗
- Inspection · 2010-08-20HCEU INSP (Housing Code Enforcement Unit inspection)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.What Philadelphia inspections check ↗
- Inspection · 2010-10-01HCEU INSP (Housing Code Enforcement Unit inspection)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.What Philadelphia inspections check ↗
- Inspection · 2010-10-01HCEU INSP (Housing Code Enforcement Unit inspection)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.What Philadelphia inspections check ↗
- Inspection · 2011-01-05PRECOURT (likely: pre-court compliance inspection)A follow-up before or during enforcement escalation; confirm the case sequence in the City file.What Philadelphia inspections check ↗
- Inspection · 2011-01-13PRECOURT (likely: pre-court compliance inspection)A follow-up before or during enforcement escalation; confirm the case sequence in the City file.What Philadelphia inspections check ↗
- Inspection · 2016-04-18HCEU INSP (Housing Code Enforcement Unit inspection)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.What Philadelphia inspections check ↗
Property assessmentBlock median & rangeZIP 19135 (Tacony · Wissinoming) medianAssessmentDeed / saleL&I violationPermitInspection
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 record38 events · exact dates, newest first
- Deed / saleDeed / sale $182K
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationCLIP VIOLATION NOTICE
- L&I violationRUBBISH/GARBAGE EXTERIOR-OWNER
- L&I violationHIGH WEEDS-CUT
- Deed / saleDeed / sale $99K
- L&I violationCLIP VIOLATION NOTICE
- L&I violationHIGH WEEDS-CUT
- L&I violationPOOL - STAGNANT WATER
- L&I violationCLIP VIOLATION NOTICE
- L&I violationRUBBISH/GARBAGE EXTERIOR-OWNER
- L&I violationLICENSE - RENTAL PROPERTY
- L&I violationCLIP VIOLATION NOTICE
- InspectionPRECOURT (likely: pre-court compliance inspection)
- InspectionPRECOURT (likely: pre-court compliance inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationLICENSE-RES SFD/2FD
- InspectionCEASE INSP (likely: cease-operations compliance inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationNON-REGULATED LACKS PERMIT (The cited activity or use lacked a required permit)
- L&I violationOBTAIN LIC INDICATED (Obtain the license identified in the notice)
- L&I violationCAL LO (Commercial Activity License required)
- L&I violationCAL PROHIBITED CONDUCT
- L&I violationNON-REGULATED LACKS PERMIT (The cited activity or use lacked a required permit)
- InspectionCEASE INSP (likely: cease-operations compliance inspection)
- InspectionBC INSP (likely: building-code inspection)
- InspectionBC INSP (likely: building-code inspection)
- InspectionBC INSP (likely: building-code inspection)
- InspectionBP_BLDG
- PermitAlteration
- PermitZoning
- L&I violationPERMB- CONST ADDITION
- InspectionBP_BLDG
- InspectionL_COMPLY
- InspectionL_INITIAL
- InspectionL_INITIAL
Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$2,581/year estimated property tax
2026 taxable assessment $184,400 × 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 $190,300. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 4120119002026 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.
Stories
2
Interior
1,088 sqft
livable area
Lot
1,800 sqft
Basement
Full, unfinished
city code C
Heat
Hot water / radiators
city code B
Central air
No
Exterior condition
Average
city code 4
Above averageBelow average
Interior condition
Average
city code 4
Above averageBelow average
Quality grade
C
assessor's grade
ABCDE
Zoning
RSA3
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
4500 block of Knorr St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 4502 Knorr St · 4506 Knorr St
L&I licenses checked through Jul 25, 2026
No business or residential license records
No business license or residential registration matched this OPA parcel in the latest City data.
Open every source row 37 dated rows
- Recorded transfer$182K transfer
2022
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 263937 · 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.
- ViolationCLIP VIOLATION NOTICE
Case 431015 · Violation 3177013 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationRUBBISH/GARBAGE EXTERIOR-OWNER
Case 431015 · Violation 3177014 · Code CP-305 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationHIGH WEEDS-CUT
Case 431015 · Violation 3177015 · Code CP-312A · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- Recorded transfer$99K transfer
2014
- ViolationCLIP VIOLATION NOTICE
Case 339145 · Violation 2507144 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationHIGH WEEDS-CUT
Case 339145 · Violation 2507145 · Code CP-312A · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPOOL - STAGNANT WATER
Case 339145 · Violation 2507146 · Code CP-315 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 317799 · Violation 2373793 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationRUBBISH/GARBAGE EXTERIOR-OWNER
Case 317799 · Violation 2373794 · Code CP-305 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationLICENSE - RENTAL PROPERTY
Case 306399 · Violation 2307691 · Code CP-101 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 306399 · Violation 2307690 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 241927 · 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.
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 241927 · 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.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 241927 · 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.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 241927 · 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.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 241927 · 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.
- ViolationLICENSE-RES SFD/2FD
Case 241927 · Violation 1940867 · Code PM-102.3/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationCEASE INSP (likely: cease-operations compliance inspection)
Case 240841 · CLOSED
Legacy inspection shorthand; verify whether a cease-operations order existed and its current status. City marked the record closed; open the case for the closing reason.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 241927 · 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.
- ViolationNON-REGULATED LACKS PERMIT (The cited activity or use lacked a required permit)
Case 240832 · Violation 1730234 · Code 14-1704/10 · ERROR
The title alone does not identify the missing permit or prove the present use remains unauthorized.
- ViolationOBTAIN LIC INDICATED (Obtain the license identified in the notice)
Case 240832 · Violation 1730230 · Code LO-1 · ERROR
The shorthand does not identify the license type; open the case notice for that detail.
- ViolationCAL LO (Commercial Activity License required)
Case 240832 · Violation 1730229 · Code 19-2602.1/1 · ERROR
Philadelphia Code §19-2602(1) requires a Commercial Activity License before conducting business in the city.
- ViolationCAL PROHIBITED CONDUCT
Case 240841 · Violation 1731308 · Code 19-2602.4/1 · COMPEXCP
- ViolationNON-REGULATED LACKS PERMIT (The cited activity or use lacked a required permit)
Case 240841 · Violation 1731309 · Code 14-1704/10 · COMPEXCP
The title alone does not identify the missing permit or prove the present use remains unauthorized.
- InvestigationBC INSP (likely: building-code inspection)
Case 240841 · FAILED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationBC INSP (likely: building-code inspection)
Case 240832 · CLOSED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. City marked the record closed; open the case for the closing reason.
- InvestigationBC INSP (likely: building-code inspection)
Case 240841 · CLOSED
Legacy inspection shorthand; confirm the inspection type and scope in the City case file. City marked the record closed; open the case for the closing reason.
- InvestigationBP_BLDG
Case 156428 · PASSED
The cited inspection visit was marked passed.
- PermitAlteration
Permit 152701 · COMPLETED
REPLACE PATIO ROOF AWNING WITH WOODEN ENCLOSURE AWNING AS PER PLANS
- PermitZoning
Permit 146869 · COMPLETED
REPLACE PATIO ROOF AWNING WITH WOODEN ENCLOSURE AWNING AS PER PLANS
- ViolationPERMB- CONST ADDITION
Case 156428 · Violation 918538 · Code A-301.1/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationBP_BLDG
Case 156428 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL_COMPLY
Case 13290 · CLOSED
City marked the record closed; open the case for the closing reason.
- InvestigationL_INITIAL
Case 13290 · CLOSED
City marked the record closed; open the case for the closing reason.
- InvestigationL_INITIAL
Case 13290 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
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, 1:37 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)