2026 assessment
$491K
OPA value, not a listing price
House report
819 Mountain St
2 bd1 ba1,427 sqftRSA5built 1925
Property at a glanceHouse
Owner-occupancy signal
ZIP 19148 area
Pennsport · Lower Moyamensing
800 block of Mountain 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$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 · 2017$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 · 2018$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 · 2019$338K 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$367K 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$367K 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$367K 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$456K 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$456K 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$491K 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$491K 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$479K 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 · 2012Deed / sale $215KA 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 · 2015Deed / sale $270KA 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 · 2020Deed / sale $450KA 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 · 2009-02-11Major 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 ↗
- Permit · 2014-06-17Major 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 ↗
- Permit · 2017-04-27ZoningThis 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 · 2017-04-27AdditionThis 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 · 2017-06-22PlumbingThis 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 · 2017-06-29ElectricalThis 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 · 2017-07-17MechanicalThis 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 · 2009-01-06WALL BULGEDA 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 · 2009-01-06ROOF DETERIORATEDA 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 · 2009-01-06CSUINITIALA 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 · 2014-07-22CSUINITIALA 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 ↗
Property assessmentBlock median & rangeZIP 19148 (Pennsport · Lower Moyamensing) medianAssessmentDeed / saleL&I violationPermitInspection
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 record14 events · exact dates, newest first
- Deed / saleDeed / sale $450K
- PermitMechanical
- PermitElectrical
- PermitPlumbing
- PermitZoning
- PermitAddition
- Deed / saleDeed / sale $270K
- InspectionCSUINITIAL
- PermitMajor alteration
- Deed / saleDeed / sale $215K
- PermitMajor alteration
- L&I violationWALL BULGED
- L&I violationROOF DETERIORATED
- InspectionCSUINITIAL
Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$5,473/year estimated property tax
2026 taxable assessment $391,000 × 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 $479,100. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 0123049002026 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.
Bedrooms
2
Bathrooms
1
Interior
1,427 sqft
livable area
Lot
788 sqft
Basement
Partial, finished
city code E
Heat
Forced hot air
city code A
Central air
Yes
Garage
1 space
Exterior condition
Above average
city code 3
Above averageBelow average
Interior condition
Above average
city code 3
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
800 block of Mountain St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 817 Mountain St · 821 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 14 dated rows
- Recorded transfer$450K transfer
2020
- PermitMechanical
Permit 800440 · COMPLETED
INSTALL (1) HEAT PUMP WITH DUCTWORK. (SFD)
- PermitElectrical
Permit 795966 · COMPLETED
INSTALL NEW 200AMP SERVICE, 15 RECESSED LIGHTS, 8 SWITCHES, APPROX 20 RECEPTS, 2 SMOKE DETECTORS, 2 CATV JACKS AS PER 2008 NEC (SOUTH DISTRICT)
- PermitPlumbing
Permit 794082 · COMPLETED
EXTEND 4" STACK WITH VENT ROUGHIN 1-3PC BATHROOM. TUB ,SHOWER, SINK, TOILET, WATER LINES TO FIXTURES.
- PermitZoning
Permit 766619 · COMPLETED
THIRD FLOOD ADDITION WITH ROOF DECK TO AN EXISTING ATTACHED STRUCTURE AS PART OF AN EXISTING SINGLE FAMILY DWELLING.
- PermitAddition
Permit 766620 · COMPLETED
THIRD FLOOD ADDITION WITH ROOF DECK (PA HIC #PA112857)
- Recorded transfer$270K transfer
2015
- InvestigationCSUINITIAL
Case 191348 · PASSED
The cited inspection visit was marked passed.
- PermitMajor alteration
Permit 543596 · COMPLETED
PERMIT APPLICATION IN RESPONSE TO UNSAFE VIOLATIONS. TO COMPLY VIOLATION, COMPLETED WORK IS TO BE INSPECTED AND APPROVED AS AN APPROPRIATE REPAIR TO EACH VIOLATION. NO ENGINEER'S REPORT SUBMITTED. LICENSED CONTRACTOR TO ASSUME RESPONSIBILITY OF WORK. PERMIT ISSUED TO MICHAEL MACDONALD, PA STATE LIC EXP 082714. NO OTHER WORK THIS PERMIT. SEPARATE PERMITS REQUIRED FOR RENOVATION. CONTACT STREETS DEPARTMENT FOR DUMPSTER AND/OR FOOTWAY CLOSURE PERMITS.
- Recorded transfer$215K transfer
2012
- PermitMajor alteration
Permit 200689 · EXPIRED
PERMIT TO COMPLY VIOLATION, CASE # 191348.
- ViolationWALL BULGED
Case 191348 · Violation 1236394 · Code PM-307.1/8 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationROOF DETERIORATED
Case 191348 · Violation 1236393 · Code PM-307.1/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationCSUINITIAL
Case 191348 · FAILED
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
- 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 23, 2026, 11:49 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)