2026 assessment
$365K
OPA value, not a listing price
House report
1311 Mount Vernon St
4 bd1 ba3 stories1,632 sqftCMX3built 1900
Property at a glanceHouse
Owner-occupancy signal
ZIP 19123 area
Northern Liberties · Callowhill
1300 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$114K 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$114K 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$114K 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$377K 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$390K 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$390K 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$390K 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$377K 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$377K 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$365K 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$365K 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$350K 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 · 2011-01-25AdministrativeThis 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 · 2012-01-31ZoningThis 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 · 2012-01-31AdditionThis 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 · 2013-02-08PlumbingThis 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 · 2013-04-17ElectricalThis 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 · 2013-12-17AdministrativeThis 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 · 2015-12-02PlumbingThis 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 · 2016-02-22ElectricalThis 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 · 2016-10-07ZoningThis 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 · 2016-10-07Major 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 · 2016-12-06Major 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 · 2017-08-09MechanicalThis 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 · 2017-11-13New ConstructionThis 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 · 2018-10-09AlterationThis 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 ↗
- Appeal · 2011-05-24Zoning board appealA challenge or request reviewed through a City appeals process. Filing an appeal does not show who prevailed; read the decision, conditions, and related permit or violation.How Philadelphia L&I appeals work ↗
- Appeal · 2011-06-21Building standards appealA challenge or request reviewed through a City appeals process. Filing an appeal does not show who prevailed; read the decision, conditions, and related permit or violation.How Philadelphia L&I appeals work ↗
Property assessmentBlock median & rangeZIP 19123 (Northern Liberties · Callowhill) medianAssessmentAppealPermit
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 record16 events · exact dates, newest first
- PermitAlteration
- PermitNew Construction
- PermitMechanical
- PermitMajor alteration
- PermitZoning
- PermitMajor alteration
- PermitElectrical
- PermitPlumbing
- PermitAdministrative
- PermitElectrical
- PermitPlumbing
- PermitZoning
- PermitAddition
- AppealBuilding standards appeal
- AppealZoning board appeal
- PermitAdministrative
Flags: 2 zoning/board appeals on record. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$5,109/year estimated property tax
2026 taxable assessment $365,000 × 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 $350,300. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 1412752002026 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.”
Where the record looks off
Conflicts in City paperwork. Flags on the data, not the property.
"Built 1900" is usually a placeholder
Philadelphia records use 1900 as a stand-in when the real construction year was never documented. Treat the age as unknown, not as 120+ years.
The property, on paper
OPA physical field record.
Bedrooms
4
Bathrooms
1
Stories
3
Interior
1,632 sqft
livable area
Lot
728 sqft
Basement
Full, unfinished
city code C
Heat
Forced hot air
city code A
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
CMX3
city zoning code
Zoning appeals
2
OPEN · APPROVED · 2011
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
1300 block of Mount Vernon St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 1309 Mount Vernon St · 1313 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 16 dated rows
- PermitAlteration
Permit 911253 · COMPLETED
REMOVE EXISTING SHINGLES, INSTALL NEW SHINGLE ROOF. (SFD)
- PermitNew Construction
Permit 830000 · Issued
ADDITION: WIRE NEW ADDITION IN REAR OF PROPERTY, RECEPTACLES, SWITCHES, SUB-PANEL, SMOKE DETECTORS, RECESSED LIGHTS.... IN ACCORDANCE WITH 2008 NEC FOR A ONE FAMILY BUILDING
- PermitMechanical
Permit 806882 · COMPLETED
INSTALLATION OF DUCTWORK NO APPLICANCES OR WARM AIR AIR EQUIPMENT. (SFD)
- PermitMajor alteration
Permit 737306 · COMPLETED
FOR UNDERPINNING FOUNDATION OF AN EXISTING SINGLE FAMILY DWELLING AS PER ENGINEER'S PLANS,
- PermitZoning
Permit 726206 · COMPLETED
FOR THE PARTIAL DEMOLITION OF THE REAR PORTION OF AN EXISTING ATTACHED BUILDING. SIZE AND LOCATION AS SHOWN IN APPLICATION. FOR USE AS EXISTING SINGLE FAMILY HOUSEHOLD LIVING. *SEE A/P 726204 FOR PLANS*
- PermitMajor alteration
Permit 726204 · COMPLETED
LEVEL II ALTERATIONS (NO CHANGE OF OCCUPANCY) TO REMOVE EXISTING THREE STORY REAR PORTION OF AN ATTACHED SINGLE FAMILY DWELLING BY HAND METHODS ONLY AS PER APPROVED PLANS. *SEPARATE PERMITS REQUIRED FOR ANY NEW CONSTRUCTION*
- PermitElectrical
Permit 668391 · COMPLETED
REWIRE/INSTALL 12- RECEPTACLES, 18- SWITCHES,18- LIGHTS, 6- SMOKE DETECTORS, 1- 40A STEAMER, ALL 120V DEVICES ON EXISTING CIRCUITS..IN ACCORDANCE WITH 2008 NEC FOR A ONE FAMILY BUILDING
- PermitPlumbing
Permit 655294 · COMPLETED
DRAINAGE & WATER ROUGHINS FOR 3 WATER CLOSETS, 2 VANITIES, 1 BIDET, AND 1 TUB - THE INSTALLATION WILL COMPY WITH THE PHILADEPHIA PLUBMING CODE 2004
- PermitAdministrative
Permit 511394 · COMPLETED
EXTENSION OF PERMIT # 328676 PURSUANT TO PA ACT 46. THIS EXTENSION TO EXPIRE ON JULY 2, 2016 UNLESS EXTENDED BY OTHER PORTIONS OF THE PHILADELPHIA CODE.
- PermitElectrical
Permit 463796 · COMPLETED
WIRE FOR NEW KITCHEN, (8) RECESSED LIGHTS, (5)SWITCHES, MICROWAVE, (10)RECEPTACLES, (2)GFI'S, 2-3 FLUSH LIGHTS.... IN ACCORDANCE WITH 2008 NEC FOR A ONE FAMILY BUILDING
- PermitPlumbing
Permit 452620 · COMPLETED
ROUGH & FINISH KITCHEN WITH 2 SINK & DISHWASHER (SFD)
- PermitZoning
Permit 328664 · COMPLETED
ADDITION TO SFD TO INCLUDE BUILD OUT OF EXISTING PREMISIS TO SIDE PROPERTY LINE AT 2ND AND 3RD FL.
- PermitAddition
Permit 328676 · COMPLETED
FOR THE ERECTION OF A REAR AREA THREE & TWO STORY ADDITION TO INCLUDE A ROOF TOP DECK AT THE SECOND FLOOR ROOF. PERMIT ACTIVITY HAS BEEN APPROVED BY THE BOARD OF BUILDING STANDARDS CASE # 15239. THIS WORK ACTIVITY SHALL BE PERFORMED BY CONTRACTORS REGISTERED WITH THE STATE ATTORNEY GENERALS OFFICE.
- AppealBuilding standards appeal
Appeal 15239 · OPEN · APPROVED
Related permit 328676 · ON 3/23/2011, THE DEPARTMENT OF LICENSES AND INSPECTIONS ISSUED A NOTICE OF REFUSAL FOR APPLICATION #328676.
- AppealZoning board appeal
Appeal 14935 · CLOSED · Granted with conditions
Related permit 328664 · PERMIT FOR THE PARTIAL DEMOLITION OF A TWO(2) STORY REAR PORTION OF THE EXISTING STRUCTURE. FOR THE ERECTION OF A THREE(3) STORY ADDITION AND A TWO(2) STORY ADDITION TO AN EXISTING RESIDENTIAL STRUCTURE WITH A ROOF TOP DECK AT THE SECOND FL
- PermitAdministrative
Permit 317535 · COMPLETED
PRELIMINARY PLAN REVIEW FOR BUILDING OUT EXISTING PREMISIS TO SIDE PROPERTY LINE. BUILD OUT AND INSTALLATION OF GLASS WALL AT REAR PROPERTY LINE AT 1ST FL. AND RAINWATER COLLECTION FROM LOWER ROOF. FOR SFD.
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, 6:24 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)