2026 assessment
$1.1M
OPA value, not a listing price
Multi-family report
4423 Baltimore Ave
3,210 sqftRTA1built 1935
Property at a glanceApartment building
Individual, other or unknown mailing address
ZIP 19104 area
University City · West Powelton
4400 block of Baltimore Ave
Assessment and City record timeline
Published City assessments for this building 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$464K 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$464K 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$464K 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$464K 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$482K 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$482K 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$482K 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$613K 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$613K 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$1.1M 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$1.1M 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$969K 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 · 2008Deed / sale $465KA 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 · 2023-03-09AlterationsThis 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 · 2017-08-23INTERIOR 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 · 2017-08-23PEST ELIMINATION INFESTATIONA 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 · 2017-08-23EXTERIOR STRUCT PROTECTIVE TREA 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 · 2017-08-23WASTE MATERIALA 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 · 2017-08-23FIRE SYSTEMS MAINTAINEDA 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 · 2017-08-23EXTINGUISHER MOUNTEDA 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 · 2017-08-23FIRE ALARM INOPERABLEA 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 · 2017-08-23RUBBISH AND 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 · 2017-08-23INTERIOR DOORSA 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 · 2017-08-23FIRE ALARM TESTED/CERTIFIEDA 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 · 2017-08-23PLUMBING 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 ↗
- Inspection · 2017-08-23HCEU 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 · 2026-02-04RENTAL LICENSE MULTI FAMILY (R2)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 ↗
- L&I violation · 2026-02-04PERIODIC TESTINGA 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 · 2026-02-04L&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 · 2017-10-17HCEU 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 · 2026-03-11L&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 · 2026-04-15L&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 · 2009-02-26SONGYAN ZHENG: 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 · 2009-02-26MAZZA FAMILY LIVING TRUST II: 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 ↗
- License · 2021-04-29SONGYAN ZHENG: 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 ↗
- License · 2004-06-30MAZZA FAMILY LIVING TRUST II: 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 19104 (University City · West Powelton) 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 record24 events · exact dates, newest first
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationRENTAL LICENSE MULTI FAMILY (R2)
- L&I violationPERIODIC TESTING
- InspectionL&I investigation
- PermitAlterations
- LicenseSONGYAN ZHENG: Rental landlord or residential registration marked inactive
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationINTERIOR SURFACES
- L&I violationPEST ELIMINATION INFESTATION
- L&I violationEXTERIOR STRUCT PROTECTIVE TRE
- L&I violationWASTE MATERIAL
- L&I violationFIRE SYSTEMS MAINTAINED
- L&I violationEXTINGUISHER MOUNTED
- L&I violationFIRE ALARM INOPERABLE
- L&I violationRUBBISH AND GARBAGE
- L&I violationINTERIOR DOORS
- L&I violationFIRE ALARM TESTED/CERTIFIED
- L&I violationPLUMBING SYSTEMS-GENERAL
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- LicenseSONGYAN ZHENG: Rental landlord or residential registration initially issued
- LicenseMAZZA FAMILY LIVING TRUST II: Rental landlord or residential registration marked inactive
- Deed / saleDeed / sale $465K
- LicenseMAZZA FAMILY LIVING TRUST II: Rental landlord or residential registration initially issued
Flags: 2 open L&I violations. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$16,084/year estimated property tax
2026 taxable assessment $1,149,000 × 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 $969,300. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 2720845002026 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.
Interior
3,210 sqft
livable area
Lot
4,100 sqft
Basement
Full
city code D
Heat
Hot water / radiators
city code B
Exterior condition
Above average
city code 3
Above averageBelow average
Interior condition
Above average
city code 3
Above averageBelow average
Quality grade
B-
assessor's grade
ABCDE
Zoning
RTA1
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
4400 block of Baltimore Ave. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 4421 Baltimore Ave · 4425 Baltimore Ave
L&I license dates · data through Jul 25, 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 25, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
SONGYAN ZHENGInactive
Rental · Initial issue date Feb 26, 2009 · Terminal license date Apr 29, 2021
MAZZA FAMILY LIVING TRUST IIInactive
Rental · Initial issue date Jun 30, 2004 · Terminal license date Feb 26, 2009
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 24 dated rows
- InvestigationL&I investigation
Case CF-2026-009974 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2026-009974 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationRENTAL LICENSE MULTI FAMILY (R2)
Case CF-2026-009974 · Violation VI-2026-006475 · Code 9-3902 (2) · OPEN
- ViolationPERIODIC TESTING
Case CF-2026-009974 · Violation VI-2026-006476 · Code F-901.6.4 · OPEN
- InvestigationL&I investigation
Case CF-2026-009974 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitAlterations
Permit PP-2023-003095 · Completed
REPAIR/REPLACE CURB TRAP, FRESH AIR INLET AND HOUSE DRAIN
- License terminal eventSONGYAN ZHENG: Rental landlord or residential registration marked inactive
License 467348 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 601185 · 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.
- ViolationINTERIOR SURFACES
Case 601185 · Violation 4432142 · Code PM15-305.3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPEST ELIMINATION INFESTATION
Case 601185 · Violation 4432146 · Code PM15-309.1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTERIOR STRUCT PROTECTIVE TRE
Case 601185 · Violation 4432141 · Code PM15-304.2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationWASTE MATERIAL
Case 601185 · Violation 4432136 · Code FC-13-304.1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationFIRE SYSTEMS MAINTAINED
Case 601185 · Violation 4432137 · Code FC-13-901.6 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTINGUISHER MOUNTED
Case 601185 · Violation 4432138 · Code FC-13-906.7 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationFIRE ALARM INOPERABLE
Case 601185 · Violation 4432139 · Code FC-13-907A · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationRUBBISH AND GARBAGE
Case 601185 · Violation 4432145 · Code PM15-308.1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationINTERIOR DOORS
Case 601185 · Violation 4432144 · Code PM15-305.6 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationFIRE ALARM TESTED/CERTIFIED
Case 601185 · Violation 4432140 · Code FC-13-915.1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPLUMBING SYSTEMS-GENERAL
Case 601185 · Violation 4432147 · Code PM15-504.1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 601185 · 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.
- License issue eventSONGYAN ZHENG: Rental landlord or residential registration initially issued
License 467348 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License terminal eventMAZZA FAMILY LIVING TRUST II: Rental landlord or residential registration marked inactive
License 268349 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- Recorded transfer$465K transfer
2008
- License issue eventMAZZA FAMILY LIVING TRUST II: Rental landlord or residential registration initially issued
License 268349 · 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 26, 2026, 4:24 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)