2026 assessment
$245K
OPA value, not a listing price
House report
2947 Knorr St
Research this property with Analyst →3 bd1 ba2 stories1,168 sqftRSA5built 1950
Property at a glanceHouse
Individual, other or unknown mailing address
ZIP 19149 area
Mayfair
2900 block of Knorr St
Open L&I record
Open City history ↗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.
Case CF-2024-003958
IN VIOLATIONRental License- One & Two Family (R3)
- Rental License- One & Two Family (R3)
9-3902 (1)
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 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$136K 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$136K 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$136K 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$148K 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$154K 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$154K 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$154K 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$222K 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$222K 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$245K 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$245K 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$268K 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 · 2019Deed / sale $193KA 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 ↗
- L&I violation · 2019-06-03CLIP 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 · 2019-06-03HIGH 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 · 2023-06-28RUBBISH & GARBAGEA 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 · 2023-06-28EXTERIOR AREA MOTOR VEHICLE WITHIN THE PROPERTY LINEA 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 · 2023-06-28EXTERIOR AREA WEEDSA 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 · 2023-06-28L&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 ↗
- L&I violation · 2023-12-13EXTERIOR AREA MOTOR VEHICLE WITHIN THE PROPERTY LINEA 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 · 2023-12-13RUBBISH & GARBAGEA 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 · 2023-12-13L&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 ↗
- L&I violation · 2024-01-16RENTAL 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 · 2024-01-16L&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 ↗
- L&I violation · 2024-02-16EXTERIOR AREA MOTOR VEHICLE WITHIN THE PROPERTY LINEA 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 · 2024-02-16WASTE ACCUMULATION PROHIBITEDA 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 · 2023-07-12L&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 · 2024-01-02L&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 · 2024-02-18L&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 · 2024-02-18L&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 · 2024-03-01L&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 · 2024-04-09L&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 ↗
- License · 2019-12-17Jiyue Chen: 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 ↗
Property assessmentBlock median & rangeZIP 19149 (Mayfair) 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 record21 events · exact dates, newest first
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationEXTERIOR AREA MOTOR VEHICLE WITHIN THE PROPERTY LINE
- L&I violationWASTE ACCUMULATION PROHIBITED
- L&I violationRENTAL LICENSE- ONE & TWO FAMILY (R3)
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationEXTERIOR AREA MOTOR VEHICLE WITHIN THE PROPERTY LINE
- L&I violationRUBBISH & GARBAGE
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationRUBBISH & GARBAGE
- L&I violationEXTERIOR AREA MOTOR VEHICLE WITHIN THE PROPERTY LINE
- L&I violationEXTERIOR AREA WEEDS
- InspectionL&I investigation
- LicenseJiyue Chen: Rental landlord or residential registration initially issued
- L&I violationCLIP VIOLATION NOTICE
- L&I violationHIGH WEEDS-CUT
- Deed / saleDeed / sale $193K
Flags: active rental license · 1 L&I violation row marked OPEN. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$3,431/year estimated property tax
2026 taxable assessment $245,100 × 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 $267,800. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 5512074002026 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
Stories
2
Interior
1,168 sqft
livable area
Lot
2,002 sqft
Basement
Partial, semi-finished
city code F
Garage
1 space
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
RSA5
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
2900 block of Knorr St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 2945 Knorr St · 2949 Knorr St
L&I license dates · data through Jul 31, 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 31, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
Jiyue ChenActive
Rental · Initial issue date Dec 17, 2019 · Filed expiration Dec 16, 2026
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 20 dated rows
- InvestigationL&I investigation
Case CF-2024-012590 · PASSED
The cited inspection visit was marked passed.
- InvestigationL&I investigation
Case CF-2024-003958 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2024-012590 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationEXTERIOR AREA MOTOR VEHICLE WITHIN THE PROPERTY LINE
Case CF-2024-012590 · Violation VI-2024-010451 · Code PM15-302.8 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationWASTE ACCUMULATION PROHIBITED
Case CF-2024-012590 · Violation VI-2024-010452 · Code F-304.1 · 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-2024-003958 · Violation VI-2024-003342 · Code 9-3902 (1) · OPEN
The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.
- InvestigationL&I investigation
Case CF-2024-003958 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-126087 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationEXTERIOR AREA MOTOR VEHICLE WITHIN THE PROPERTY LINE
Case CF-2023-126087 · Violation VI-2023-096050 · Code PM15-302.8 · COMPLIED
Resolution: COMPLIED - BY ENFORCEMENT ACTION City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationRUBBISH & GARBAGE
Case CF-2023-126087 · Violation VI-2023-096049 · Code PM15-308.1 · COMPLIED
Resolution: COMPLIED - BY ENFORCEMENT ACTION City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2023-126087 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2023-060740 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationRUBBISH & GARBAGE
Case CF-2023-060740 · Violation VI-2023-045424 · Code PM15-308.1 · COMPLIED
Resolution: COMPLIED - BY ENFORCEMENT ACTION City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTERIOR AREA MOTOR VEHICLE WITHIN THE PROPERTY LINE
Case CF-2023-060740 · Violation VI-2023-045423 · Code PM15-302.8 · COMPLIED
Resolution: COMPLIED - BY ENFORCEMENT ACTION City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTERIOR AREA WEEDS
Case CF-2023-060740 · Violation VI-2023-045422 · Code PM15-302.4 · COMPLIED
Resolution: COMPLIED - BY ENFORCEMENT ACTION City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2023-060740 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License issue eventJiyue Chen: Rental landlord or residential registration initially issued
License 831893 · Active
License event. Registration does not prove present operation or storefront occupancy.
- ViolationCLIP VIOLATION NOTICE
Case 688564 · Violation 5060771 · 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 688564 · Violation 5060772 · Code CP-312A · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- Recorded transfer$193K transfer
2019
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 Aug 1, 2026, 7:49 AM 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)