2026 assessment
$341K
OPA value, not a listing price
House report
3935 Mount Vernon St
3 bd1 ba2 stories1,120 sqftRSA5built 1930
Property at a glanceHouse
Owner-occupancy signal
ZIP 19104 area
University City · West Powelton
3900 block of Mount Vernon 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$120K 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$120K 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$120K 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$136K 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$142K 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$142K 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$142K 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$337K 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$337K 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$341K 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$341K 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$295K 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 $95KA 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 $255KA 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 · 2024Deed / sale $284KA 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 · 2018-11-05PlumbingThis 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 · 2018-11-15AlterationThis 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 · 2018-11-30PlumbingThis 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 · 2018-12-10ElectricalThis 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 · 2019-02-13MechanicalThis 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 · 2019-02-13Major 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 ↗
Property assessmentBlock median & rangeZIP 19104 (University City · West Powelton) medianAssessmentDeed / salePermit
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 record9 events · exact dates, newest first
- Deed / saleDeed / sale $284K
- PermitMechanical
- PermitMajor alteration
- Deed / saleDeed / sale $255K
- PermitElectrical
- PermitPlumbing
- PermitAlteration
- PermitPlumbing
- Deed / saleDeed / sale $95K
Flags: historical tax ledger through 2016 recorded $16K with a lien entry. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$3,375/year estimated property tax
2026 taxable assessment $241,100 × 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 $295,000. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 2422139002026 OPA removes $100,000 from the taxable assessment through the owner-occupant exemption.
Historical delinquency sources Record found
This parcel did not match the June 2022 delinquency snapshot. That absence does not confirm the account is current today.
A separate historical parcel ledger ending in 2016 records $16,418.64 and a lien entry. It is shown as historical context only.
2002$406.69 total · $0.00 principal · $338.34 interest · $22.62 penalty2003$721.93 total · $0.00 principal · $619.54 interest · $41.51 penalty2004$1,095.23 total · $331.40 principal · $640.32 interest · $41.51 penalty2005$1,325.55 total · $593.02 principal · $595.99 interest · $41.51 penalty2006$1,268.98 total · $593.02 principal · $542.62 interest · $41.51 penalty2007$1,212.40 total · $593.02 principal · $489.24 interest · $41.51 penalty2008$1,243.10 total · $638.64 principal · $469.40 interest · $44.70 penalty2009$1,182.18 total · $638.64 principal · $411.92 interest · $44.70 penalty2010$1,121.26 total · $638.64 principal · $354.45 interest · $44.70 penalty2011$1,163.19 total · $701.86 principal · $326.36 interest · $49.13 penalty2012$1,137.66 total · $728.90 principal · $273.34 interest · $51.02 penalty2013$1,105.75 total · $755.10 principal · $215.20 interest · $52.86 penalty2014$1,354.75 total · $941.79 principal · $183.65 interest · $65.93 penalty2015$978.94 total · $712.20 principal · $74.78 interest · $49.85 penalty2016$1,101.03 total · $928.79 principal · $13.93 interest · $9.29 penalty
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
3
Bathrooms
1
Stories
2
Interior
1,120 sqft
livable area
Lot
1,105 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
RSA5
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
3900 block of Mount Vernon St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 3933 Mount Vernon St · 3937 Mount Vernon 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 9 dated rows
- Recorded transfer$284K transfer
2024
- PermitMechanical
Permit 949250 · COMPLETED
EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES- FOR THE INSTALLATION IF NEW DUCTWORK, REGISTERS/GRILLES/DIFFUSERS, AND WARM-AIR APPLIANCES AS PER ATTACHED STANDARDS. DEVIATIONS FROM THESE STANDARDS REQUIRE SUBMISSION OF CONSTRUCTION AND SITE PLANS. INSTALL (1) HIGH EFF 54K BTU GAS FURNANCE
- PermitMajor alteration
Permit 941265 · COMPLETED
FIRST AND SECOND FLOOR STAIR WIDENING AS PART OF EXISTING SINGLE FAMILY DWELLING. NO OTHER WORK INCLUDED ON THIS APPLICATION. (DETAILS AS SHOWN ON THE PLAN).
- Recorded transfer$255K transfer
2019
- PermitElectrical
Permit 933750 · COMPLETED
100AMP SERVICE COMPLETE AND REWIRE THROUGHOUT SWITCHES, GFCI'S, OUTLETS, LIGHTS & SMOKE DETECTORS AS PER NEC 2008 WEST DISTRICT
- PermitPlumbing
Permit 931434 · COMPLETED
ROUGH IN AND COMPLETE BASEMENT WASHER BOX 1ST FLOOR TOILET LAV KITCHEN SINK DISHWASHER 2ND FLOOR TOILET LAV TUB
- PermitAlteration
Permit 927977 · COMPLETED
EZ PERMIT STANDARDS 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.
- PermitPlumbing
Permit 924942 · COMPLETED
5" COMBINATION SYSTEM (STORM/SANITARY) HOUSE TRAP AND FRESH AIR INLET, AND MAIL DRAIN 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"
- Recorded transfer$95K 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 23, 2026, 10:53 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)