2026 assessment
$208K
OPA value, not a listing price
House report
4731 Knorr St
3 bd1 ba1,350 sqftRSA3built 1920
Property at a glanceHouse
Individual, other or unknown mailing address
ZIP 19135 area
Tacony · Wissinoming
4700 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$126K 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$126K 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$126K 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$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 · 2020$121K 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$121K 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$121K 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$160K 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$160K 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$208K 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$208K 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$224K 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 · 2016Deed / sale $20KA 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 · 2007-04-16PlumbingThis permit category usually covers water, drainage, fixtures, or other plumbing 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 · 2022-10-05Addition and/or AlterationThis 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 ↗
- L&I violation · 2022-08-04PLUMBING SYSTEMS- GENERALA 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 · 2022-08-04INTERIOR SURFACESA 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 · 2022-08-04INTERIOR STAIRSA 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 · 2022-08-04SINGLE- & MULTIPLE-STATION SMOKE ALARMSA 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 · 2022-08-04CARBON MONOXIDE ALARMSA 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 · 2022-08-04ELECTRICAL- HAZARDA 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 · 2022-08-04EXTERIOR AREA RODENT HARBORAGEA 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 · 2022-08-04INTERIOR SURFACESA 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 · 2022-08-04RENTAL LICENSE- ONE & TWO FAMILY (R3)A 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 · 2022-08-05L&I investigationA 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 · 2022-09-09L&I investigationA 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 · 2022-10-26L&I investigationA 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 ↗
- License · 2017-06-20SHAO LING FENG: Rental landlord or residential registration initially issuedA City license record tied to an activity or property use. Its issue, expiration, inactive, and status fields—not the category alone—show what was recorded for this date.Philadelphia L&I licenses and property records ↗
- License · 2004-12-14TUCCI MAUREEN & AL: Rental landlord or residential registration initially issuedA City license record tied to an activity or property use. Its issue, expiration, inactive, and status fields—not the category alone—show what was recorded for this date.Philadelphia L&I licenses and property records ↗
- License · 2012-12-22TUCCI MAUREEN & AL: Rental landlord or residential registration marked inactiveA City license record tied to an activity or property use. Its issue, expiration, inactive, and status fields—not the category alone—show what was recorded for this date.Philadelphia L&I licenses and property records ↗
Property assessmentBlock median & rangeZIP 19135 (Tacony · Wissinoming) medianAssessmentDeed / saleL&I violationPermitInspectionLicense
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 record18 events · exact dates, newest first
- InspectionL&I investigation
- PermitAddition and/or Alteration
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationPLUMBING SYSTEMS- GENERAL
- L&I violationINTERIOR SURFACES
- L&I violationINTERIOR STAIRS
- L&I violationSINGLE- & MULTIPLE-STATION SMOKE ALARMS
- L&I violationCARBON MONOXIDE ALARMS
- L&I violationELECTRICAL- HAZARD
- L&I violationEXTERIOR AREA RODENT HARBORAGE
- L&I violationINTERIOR SURFACES
- L&I violationRENTAL LICENSE- ONE & TWO FAMILY (R3)
- LicenseSHAO LING FENG: Rental landlord or residential registration initially issued
- Deed / saleDeed / sale $20K
- LicenseTUCCI MAUREEN & AL: Rental landlord or residential registration marked inactive
- PermitPlumbing
- LicenseTUCCI MAUREEN & AL: Rental landlord or residential registration initially issued
Flags: active rental license. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$2,912/year estimated property tax
2026 taxable assessment $208,000 × 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 $223,500. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 4120212002026 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
3
Bathrooms
1
Interior
1,350 sqft
livable area
Lot
3,000 sqft
Heat
Undetermined
city code H
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
4700 block of Knorr St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 4729 Knorr St · 4733 Knorr St
L&I license dates · data through Jul 27, 2026
Business licenses at this address Latest pull
What L&I has registered at this OPA parcel, newest initial license date first.
No L&I business license is on record at this address in data through Jul 27, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
SHAO LING FENGActive
Rental · Initial issue date Jun 20, 2017 · Filed expiration Jun 19, 2027
TUCCI MAUREEN & ALInactive
Rental · Initial issue date Dec 14, 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 18 dated rows
- InvestigationL&I investigation
Case CF-2022-079060 · PASSED
The cited inspection visit was marked passed.
- PermitAddition and/or Alteration
Permit EP-2022-009596 · Completed
Replace 100 amp incoming service cable connecting to existing 100 amp panel. All necessary bonding and grounding
- InvestigationL&I investigation
Case CF-2022-079060 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2022-079060 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationPLUMBING SYSTEMS- GENERAL
Case CF-2022-079060 · Violation VI-2022-057987 · 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.
- ViolationINTERIOR SURFACES
Case CF-2022-079060 · Violation VI-2022-057986 · Code PM15-305.3 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationINTERIOR STAIRS
Case CF-2022-079060 · Violation VI-2022-057985 · Code PM15-305.1(E) · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationSINGLE- & MULTIPLE-STATION SMOKE ALARMS
Case CF-2022-079060 · Violation VI-2022-057984 · Code F-1103.8 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCARBON MONOXIDE ALARMS
Case CF-2022-079060 · Violation VI-2022-057983 · Code F-1103.9 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationELECTRICAL- HAZARD
Case CF-2022-079060 · Violation VI-2022-057982 · Code PM15-604.3 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTERIOR AREA RODENT HARBORAGE
Case CF-2022-079060 · Violation VI-2022-057990 · Code PM15-302.5 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationINTERIOR SURFACES
Case CF-2022-079060 · Violation VI-2022-057989 · Code PM15-305.3 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationRENTAL LICENSE- ONE & TWO FAMILY (R3)
Case CF-2022-079060 · Violation VI-2022-057988 · Code 9-3902 (1) · COMPLIED
Resolution: COMPLIED - LICENSE/CERTIFICATE/REPORT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- License issue eventSHAO LING FENG: Rental landlord or residential registration initially issued
License 742904 · Active
License event. Registration does not prove present operation or storefront occupancy.
- Recorded transfer$20K transfer
2016
- License terminal eventTUCCI MAUREEN & AL: Rental landlord or residential registration marked inactive
License 270935 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitPlumbing
Permit 69339 · COMPLETED
REPLACEMENT OF CURB TRAP, FAI, MAIN DRAIN, LATERAL
- License issue eventTUCCI MAUREEN & AL: Rental landlord or residential registration initially issued
License 270935 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
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 28, 2026, 12:01 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)