2026 taxable assessment $247,200 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $241,300; it is not the 2026 billed-year value.
House report
1929 Mountain St
3 bd · 1 ba · 2 stories · 1,060 sqft · RSA5 · built 1925
Individual, other or unknown mailing address · assessed $247K (2026) · 2027 OPA assessment $241K. On the 1900 block of Mountain St.
BlockReport AI · cited public records
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Property summary
Assessment$247,2002026 OPA assessment · 2027: $241,300
Last sale$10KRecorded 2007
Est. tax bill$3,460/year2026 taxable assessment × 1.3998%
Tax delinquencyNo 2022 matchNot proof account is current
Permits6Every fetched City permit
Violations0 open4 historical across 2 cases
“Open” reflects records available then historical records keep their source dates estimates are labeled
Question or correct this record
BlockReport can explain a discrepancy, but it cannot rewrite an official City record. Use the agency that owns the underlying fact:
Property tax
The estimate, live balance, and back-tax record are different.
BlockReport can calculate the annual tax from the City’s taxable assessment. Payments, credits, interest, and a current amount due live separately in Philadelphia Tax Center.
A Tax Center balance is net of bills, payments, credits, interest, and adjustments. A credit—or an amount due—is not automatically “back taxes.”
OPA 3630979002026 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.”
What stands out
From the public recordPermit on record
Record summaryMechanical permit recorded in 2009.
View supporting records →What to do with this
The record, translated into moves — what a buyer, the owner, and a landlord would each want to check next under Philadelphia's actual rules.
If you’re buying
Built 1925: lead rules apply
Federal law requires a lead-paint disclosure at sale for any pre-1978 home. If it will be rented, Philadelphia also requires a lead-safe or lead-free certificate before a rental license can issue.
Zoned RSA5: one household by right
Single-family rowhouse (the classic Philly row). Converting to a duplex or apartments needs a use variance the zoning board rarely grants — Pennsylvania courts require a physical hardship of the lot itself, and economics alone do not qualify.
If you’re the landlord
If it is rented, verify the Rental License
The fetched license records do not show an active Rental License. Ownership type or a tax mailing address does not prove that tenants occupy the property; if it is rented, verify the current license and legal occupancy in eCLIPSE.
Derived from the fetched property records and linked City guidance as of 2026. Assessment treatment is not a substitute for an exemption approval, live balance, title report, license, occupancy certificate, or inspection. Informational only — not legal, tax, or investment advice.
Assessment and tax history
Every fetched annual City assessment for this house, compared with its block and ZIP. The figures show assessment change, the billed-year tax estimate, dated tax records, and recorded transfers. They do not estimate market appreciation or investment return.
Assessed value
$247,200
2026 billed-year assessment · 2027: $241,300 · built 1925
Price / sq ft
$228
block $233 · in line w/ block
Assessment change
+110%
+7%/yr since 2016 · 2027 -2% vs 2026
Est. tax bill / yr
$3,460
1.4% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Times sold
0
Assessment vs. the block and ZIP · every dated City record marked on the line
- OPA assessment · 2016$115K 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$115K 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$115K 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$221K 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$238K 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$238K 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$238K 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$232K 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$232K 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$247K 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$247K 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$241K 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 ↗
- Permit · 2008-05-12Major 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 ↗
- License · 2008-05-12Vacant Residential Property / LotA 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 ↗
- Permit · 2008-05-14AlterationThis 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 · 2008-05-19DemolitionThis 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 · 2009-02-04PlumbingThis 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 · 2009-04-22ElectricalThis 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 · 2009-05-08MechanicalThis 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 · 2008-07-11WALL PARTIALLY COLLAPSED IDA 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 · 2008-07-11CS ID ADDITIONAL INFOA 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 · 2008-07-11ROOF PARTIALLY COLLAPSED IDA 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 · 2009-01-26PERMB- FINAL PRE-CO INSPA 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 · 2008-08-19CSUINITIALA 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 · 2009-05-12BP_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 · 2009-08-19CSUINITIALA 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 · 2014-07-10RentalA 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 19145 medianAssessmentL&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 record15 events · exact dates, newest first
- LicenseRental
- InspectionCSUINITIAL
- InspectionBP_BLDG
- PermitMechanical
- PermitElectrical
- PermitPlumbing
- L&I violationPERMB- FINAL PRE-CO INSP
- InspectionCSUINITIAL
- L&I violationWALL PARTIALLY COLLAPSED ID
- L&I violationCS ID ADDITIONAL INFO
- L&I violationROOF PARTIALLY COLLAPSED ID
- PermitDemolition
- PermitAlteration
- PermitMajor alteration
- LicenseVacant Residential Property / Lot
The paper trail
Permit on recordMechanical permit recorded in 2009.
- 2008 Major alterationPermitAlterationPermitDemolitionPermit3 L&I violationsL&IL&I: 1 failed, 1 passedL&I visit
- 2009 PlumbingPermitElectricalPermitMechanicalPermitL&I violationL&IL&I: 2 failed, 2 passedL&I visit
Records behind the chart
Browse the source ledger
The chart above is the primary timeline. This drawer preserves every underlying dated row and its filed status for source-level review.
Browse 17 dated records deeds, permits, inspections, licenses, violations, certifications & appeals
- LicenseRental
License 634694 · Inactive
JENNIFER NGUYEN (JENNIFER LLC) · Expires 2026-02-28 · Inactive 2026-04-29
- InvestigationCSUINITIAL
Case 95299 · CLOSED
City marked the record closed; open the case for the closing reason.
- InvestigationBP_BLDG
Case 190252 · PASSED
The cited inspection visit was marked passed.
- PermitMechanical
Permit 214184 · COMPLETED
INSTALL ONE ROOFTOP UNIT AND HEAT PUMP WITH AIR AND RELATED DUCT WORK
- PermitElectrical
Permit 211975 · COMPLETED
REWIRE SINGLE FAMILY DWELLING, AS PER 2005 NEC (SOUTH DIST)
- InvestigationBP_BLDG
Case 190252 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitPlumbing
Permit 199536 · COMPLETED
INSTALLATION OF 2 WATER CLOSETS, 2 LAVYS, 1 TUB AND 1 LAUNDRY - BUILDING PERMIT TO COVER DANAGOUSE CASE IS 152094
- ViolationPERMB- FINAL PRE-CO INSP
Case 190252 · Violation 1303247 · Code A-402.5/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationCSUINITIAL
Case 169013 · PASSED
The cited inspection visit was marked passed.
- ViolationWALL PARTIALLY COLLAPSED ID
Case 169013 · Violation 1019047 · Code PM-308.1/11 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCS ID ADDITIONAL INFO
Case 169013 · Violation 1019048 · Code PM-000.0/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationROOF PARTIALLY COLLAPSED ID
Case 169013 · Violation 1019046 · Code PM-308.1/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationCSUINITIAL
Case 169013 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitDemolition
Permit 152990 · COMPLETED
INTERIOR DEMOLITION OF NON-LOAD BEARING PARTITIONS THROUGHOUT A SFD. NO OTHER WORK ALLOWED ON THIS PERMIT. APPLICANT AGREES TO LIMIT CONSTRUCTION TO COMPLY WITH EZ PERMIT STANDARD DATED FEBRUARY, 2007. DEVIATION FROM THIS STANDARD WILL RESULT IN THE REVOCATION OF THIS PERMIT AND THE IMPOSITION OF FURTHER PENALTIES.
- PermitAlteration
Permit 152094 · COMPLETED
TEAR DOWN EXISTING BRICK FRONT AND REBUILD USING BRICKS AND FOUR INCH BLOCK ALSO 8" DUAL WALL TIE INTO EXISTING PARTY WALL WINDOWS AND DOORS WILL BE IN SAME PLACE
- PermitMajor alteration
Permit 151443 · COMPLETED
REPAIR/REPLACE JOISTS AS NEEDED, REMOVE/REPLACE SHEETROCK, RECOVER ROOF , ETC
- LicenseVacant Residential Property / Lot
License 444832 · Inactive
JENNIFER NGUYEN (JENNIFER LLC) · Expires 2009-02-28 · Inactive 2012-12-22
What this record suggests
The City file documents 6 permits touching electrical work, plumbing, roof work, windows. 6 carries a completed, issued, or approved status; that documents the filing, not the present quality of the work.
Informational only — not investment advice or a consumer report (FCRA).
The property, on paper
The city assessor's field record — the physical spec sheet behind the assessed number.
Bedrooms
3
Bathrooms
1
Stories
2
Interior
1,060 sqft
livable area
Lot
658 sqft
Basement
Basement
city code J
Heat
Undetermined
city code H
Central air
No
Exterior condition
Average
city code 4
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
1929 Mountain St sits on the 1900 block of Mountain St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 1927 Mountain St · 1931 Mountain St
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 11, 2026, 3:36 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)