2026 assessment
$1.2M
OPA value, not a listing price
House report
429 S 20th St
4 bd4 ba2,130 sqftRM1built 1800
Property at a glanceHouse
Owner-occupancy signal
ZIP 19146 area
Graduate Hospital · Point Breeze
400 block of S 20th 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$399K 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$399K 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$399K 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$1.0M 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$1.0M 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$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 · 2022$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 · 2023$1.2M 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$1.2M 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$1.2M 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$1.2M 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$1.3M 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 · 2017Deed / sale $475KA 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 · 2019Deed / sale $1.2MA 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 · 2017-11-02DemolitionThis permit category usually covers partial or complete removal 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 · 2018-01-11ZoningThis 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 ↗
- Permit · 2018-06-11AdditionThis 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 · 2018-07-23PlumbingThis 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 · 2018-10-26MechanicalThis 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 · 2018-11-06PlumbingThis 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 · 2019-01-11ElectricalThis permit category usually covers electrical installation, alteration, replacement, or repair. 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 · 2016-11-30EXTERIOR 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 ↗
- L&I violation · 2016-11-30ONE AND 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 · 2016-11-30HCEU 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 · 2017-01-04HCEU 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 · 2017-02-08HCEU 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 · 2017-06-30PRECOURT (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 ↗
- License · 2017-06-12Mark Gamba: Vacant Residential Property / Lot 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 · 2018-08-10Mark Gamba: Vacant Residential Property / Lot 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 19146 (Graduate Hospital · Point Breeze) 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 record17 events · exact dates, newest first
- PermitElectrical
- Deed / saleDeed / sale $1.2M
- PermitPlumbing
- PermitMechanical
- LicenseMark Gamba: Vacant Residential Property / Lot landlord or residential registration marked inactive
- PermitPlumbing
- PermitAddition
- PermitZoning
- PermitDemolition
- InspectionPRECOURT (likely: pre-court compliance inspection)
- LicenseMark Gamba: Vacant Residential Property / Lot landlord or residential registration initially issued
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- Deed / saleDeed / sale $475K
- L&I violationEXTERIOR AREA WEEDS
- L&I violationONE AND TWO FAMILY (R3)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
Flags: material assessment exemption; legal basis and term unverified. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$6,452/year estimated property tax
2026 taxable assessment $460,920 × 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 $1,251,100. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 0811797002026 OPA taxes $460,920 of $1,152,300 assessed. The assessment fields alone do not identify a program, approval date, expiration, or buyer eligibility.
See the assessment math →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 assessment exemption gap
OPA's 2026 roll shows a partial assessment exemption. The annual difference is measurable; the reason for it and what happens after a sale are not established here.
$460,920 taxable basis
Difference to verify+$9,678/year
$1,152,300 scenario basis
The assessment roll does not identify
- Legal basis or program
- Approval or expiration date
- Treatment after a sale
- Current Tax Center balance
Show the assessment math
2026: ($1,152,300 assessed − $691,380 exempt) × 1.3998% ≈ $6,452/year
Full-assessment scenario: $1,152,300 × 1.3998% ≈ $16,130/year
Do not treat the full-assessment scenario as inevitable or assume the current relief transfers. Obtain the approval history and verify the live Tax Center account before relying on either number.
The property, on paper
OPA physical field record.
Bedrooms
4
Bathrooms
4
Interior
2,130 sqft
livable area
Lot
812 sqft
Basement
Full, finished
city code A
Heat
Forced hot air
city code A
Central air
Yes
Exterior condition
Above average
city code 3
Above averageBelow average
Interior condition
New / rehabbed
city code 2
New / rehabbed
Quality grade
C+
assessor's grade
ABCDE
Zoning
RM1
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
400 block of S 20th St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 427 S 20th St · 431 S 20th St
L&I license dates · data through Jul 24, 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 24, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
Mark GambaInactive
Vacant Residential Property / Lot · Initial issue date Jun 12, 2017 · Terminal license date Aug 10, 2018
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 17 dated rows
- PermitElectrical
Permit 940928 · COMPLETED
INSTALL NEW 200 AMP SERVICE, 50 RECESS LIGHTS, 70 OUTLETS, 40 SWITCHES, 8 SMOKE/CARBON DETECTORS. CABLE AND PHONE WIRING. AS PER 2008 NEC
- Recorded transfer$1.2M transfer
2019
- PermitPlumbing
Permit 925357 · COMPLETED
5" COMBINATION SYSTEM (STORM/SANITARY) HOUSE TRAP AND FRESH AIR INLET REPLACEMENT - "SELF-CERTIFICATIONS ARE NO LONGER PERMITTED" - "ALL EXCAVATIONS AND PLUMBING TRENCHES IN EXCESS OF 5 FEET IN DEPTH MUST HAVE APPROVED SHORING IN PLACE AT THE TIME OF INSPECTION"
- PermitMechanical
Permit 921925 · COMPLETED
EZ PERMIT NHVAC - FOR THE INSTALLATION OF NEW DUCTWORK, REGISTERS/GRILLES/DIFFUSERS, AND WARM-AIR APPLIANCES AS PER ATTACHED STANDARD. DEVIATIONS FROM THIS STANDARD WILL RESULT IN PERMIT REVOCATION AND REQUIRE SUBMISSION OF CONSTRUCTIO; INSTALL ONE 60,000 BTU FURNACE 96% IN BASEMENT, WITH 2 TON A/C 13 SEER UNIT AND ONE 80,000 BTU FURNACE 96% WITH 3 TON 13 SEER UNIT IN THE REAR OF BUILDING MOUNTED ON THE GROUND.
- License terminal eventMark Gamba: Vacant Residential Property / Lot landlord or residential registration marked inactive
License 741744 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitPlumbing
Permit 895801 · COMPLETED
INSTALLING NEW CURB TRAP. INSTALLING 4 NEW BATHROOMS, NEW PEX SYSTEM, 4 WC, 6LAVS, 2 TUBS, 2SH, 1LTS LW/BOY
- PermitAddition
Permit 869189 · COMPLETED
FOR THE INTERIOR/EXTERIOR ALTERATIONS AND RENOVATION WITH THE CONSTRUCTION OF 4TH FLOOR PARTIAL ADDITION WITH NEW DORMER ROOF AND ROOF DECK ABOVE THE THIRD STORY ROOF ACCESSED FROM THE REAR FOURTH FLOOR IN AN EXISTING FOUR (4) STORY SINGLE FAMILY DWELLING AS PER PLANS AND APPROVAL FROM PHILADELPHIA HISTORICAL COMMISSION (PHC). ** PHC TO REVIEW SHOP DRAWINGS FRO WINDOWS AND DOORS BEFORE FINAL REVIEW. **
- PermitZoning
Permit 834462 · COMPLETED
FOR THE ERECTION OF AN ADDITION WITH A ROOF DECK ABOVE THE REAR THIRD STORY ROOF ACCESSED FROM THE REAR FOURTH FLOOR, AT THE REAR OF AN EXISTING ATTACHED STRUCTURE TO BE USED AS SINGLE-FAMILY HOUSEHOLD LIVING, SIZE AND LOCATION AS SHOWN ON PLAN/APPLICATION.
- PermitDemolition
Permit 829051 · COMPLETED
INTERIOR DEMOLITION OF PARTITIONS/WALLS (NON-LOADING). NO CHANGES TO EXTERIOR. NO WORK ALTERATIONS TO WINDOWS OR DOORS. TWO FAMILY DWELLINGS
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 565382 · PASSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.
- License issue eventMark Gamba: Vacant Residential Property / Lot landlord or residential registration initially issued
License 741744 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 565382 · 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 565382 · 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.
- Recorded transfer$475K transfer
2017
- ViolationEXTERIOR AREA WEEDS
Case 565382 · Violation 4223115 · Code PM15-302.4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationONE AND TWO FAMILY (R3)
Case 565382 · Violation 4223114 · Code 9-3902 (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 565382 · 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.
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
- Imagery: Street photo © Google · Aerial © Esri, Maxar
Methodology & freshness
This report was assembled Jul 24, 2026, 9:08 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)