House report
1021 Mountain St
3 bd1 ba2 stories1,104 sqftRSA5built 1920
Owner-occupancy signal
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$173K 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$173K 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$173K 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$214K 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$231K 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$231K 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$231K 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$244K 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$244K 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$307K 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$307K 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$311K 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 · 2018Deed / sale $180KA 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 $390KA 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 · 2018-03-13AlterationThis 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 · 2018-03-13MechanicalThis 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 · 2018-03-13ElectricalThis 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 ↗
- Permit · 2018-03-16PlumbingThis 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 · 2019-03-08Major alterationA broad legacy permit work category for a substantial building alteration. It can include changed layouts, partitions, fixtures, finishes, structural work, or occupancy-related work, but only the approved scope and plans say what this permit actually authorized; separate trade permits may be required.What Philadelphia building permits can cover ↗
- L&I violation · 2018-09-20VACANT STRUCTURE LICENSEA 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 · 2018-09-20EXTERIOR STRUCTURE WALLSA 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 · 2018-09-20DOOR AND WINDOW VACANTA 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 · 2018-09-20VACANT STRUCTURE AND LANDA 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 · 2018-09-20HCEU 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 ↗
- L&I violation · 2019-05-10WORKMANLIKE- BUILDING CODEA 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 · 2019-05-10DEBRIS REMOVE - CONSTRA 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 · 2019-05-10BP_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 · 2018-10-30HCEU 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 · 2019-01-18HCEU 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 ↗
- Inspection · 2019-05-13BP_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 ↗
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.
- InspectionBP_BLDG
- L&I violationWORKMANLIKE- BUILDING CODE
- L&I violationDEBRIS REMOVE - CONSTR
- InspectionBP_BLDG
- PermitMajor alteration
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- Deed / saleDeed / sale $390K
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationVACANT STRUCTURE LICENSE
- L&I violationEXTERIOR STRUCTURE WALLS
- L&I violationDOOR AND WINDOW VACANT
- L&I violationVACANT STRUCTURE AND LAND
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- PermitPlumbing
- PermitAlteration
- PermitMechanical
- PermitElectrical
- Deed / saleDeed / sale $180K
Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$2,898/year estimated property tax
2026 taxable assessment $207,000 × 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 $310,900. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 0123092002026 OPA removes $100,000 from the taxable assessment through the owner-occupant exemption.
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.
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
1000 block of Mountain St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 1019 Mountain St · 1023 Mountain St
L&I licenses checked through Jul 23, 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 18 dated rows
- InvestigationBP_BLDG
Case 684719 · PASSED
The cited inspection visit was marked passed.
- ViolationWORKMANLIKE- BUILDING CODE
Case 684719 · Violation 5035176 · Code A-104.1/1 · ERROR
- ViolationDEBRIS REMOVE - CONSTR
Case 684719 · Violation 5035177 · Code A-104.1/5 · ERROR
- InvestigationBP_BLDG
Case 684719 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitMajor alteration
Permit 949357 · COMPLETED
INTERIOR ALTERATIONS AS PER PLANS ON STAIR 1ST LEADING TO 2ND FLOOR AND 2ND FLOOR JOIST
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 655972 · 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.
- Recorded transfer$390K transfer
2019
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 655972 · 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.
- ViolationVACANT STRUCTURE LICENSE
Case 655972 · Violation 4859033 · Code 9-3905 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTERIOR STRUCTURE WALLS
Case 655972 · Violation 4859039 · Code PM15-304.6 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationDOOR AND WINDOW VACANT
Case 655972 · Violation 4859035 · Code PM15-304.19V · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVACANT STRUCTURE AND LAND
Case 655972 · Violation 4859034 · Code PM15-301 · 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 655972 · 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.
- PermitPlumbing
Permit 860135 · COMPLETED
2 BATHS,1 STACK PIPE,1 LAUNDRY,1 KITCHEN SINK AND DISHWASHER (SFD)THE INSTALLATION WILL COMPLY WITH THE PHILADELPHIA PLUMBING CODE 2004
- PermitAlteration
Permit 859022 · COMPLETED
EZ PERMIT STANDARD ALTERATIONS - FOR ALTERATIONS TO AN EXISTING ONE FAMILY DWELLING AS PER ATTACHED STANDARD. DEVIATIONS FROM THIS STANDARD WILL RESULT IN PERMIT REVOCATION AND REQUIRE SUBMISSION OF CONSTRUCTION PLANS. WORK TO INCLUDE KITCHEN & BATHROOM ALTERATIONS, HARDWOOD FLOORS, GWB TAPED & FINISHED, PAINTING THROUGHOUT, EXTERIOR VINYL SIDING REAR AND STUCCO WALL COVERING FRONT AS PER THE ATTACHED STANDARD. SEPARATE PERMITS REQUIRED FOR PLUMBING, ELECTRIC AND HVAC. CALL INSPECTOR AT DISTRICT OFFICE AT LEAST 24 HOURS PRIOR TO STARTING WORK.
- PermitMechanical
Permit 859024 · COMPLETED
NHVAC PERMIT - DUCTWORK & WARM-AIR APPLIANCES - 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 CONSTRUCTION PLANS. INSTALL 90% GAS FIRED 80,000 BTU, 3 TON COIL, 3 TON A/C UNIT, 13 SEER.
- PermitElectrical
Permit 859029 · COMPLETED
EZ ELECTRIC PERMIT - REPLACE 200AMP SERVICE & REWIRE WITH OUTLETS, LIGHTS, SWITCHES, FIXTURES,SMOKE./CO DETECTORS AS PER THE 2008 NEC.
- Recorded transfer$180K transfer
2018
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 24, 2026, 2:22 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)
