2026 assessment
$1.1M
OPA value, not a listing price
House report
1123 Mount Vernon St
Research this property with Analyst →6 bd3 stories3,712 sqftRSA5built 2020
Property at a glanceHouse
Individual, other or unknown mailing address
ZIP 19123 area
Northern Liberties · Callowhill
1100 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$47K 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$47K 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$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 · 2021$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 · 2022$756K 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$1.0M 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$1.0M 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$1.1M 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$1.1M 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$1.2M 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 ↗
- Land buy · 2019Land record $240KA land-record event associated with this parcel. Review the recorded instrument to determine whether it reflects a conveyance, parcel change, or another filing.How to read the recorded document ↗
- Permit · 2019-09-26Zoning/useThis 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 · 2019-12-04New 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 · 2020-01-30New 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 · 2020-02-03New 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 · 2020-02-14PlumbingThis 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 · 2020-03-09New Construction or AdditionsThis 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 · 2020-06-25New 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 ↗
- L&I violation · 2011-05-18CLIP VIOLATION NOTICEA 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 · 2011-05-18VACANT LOT STANDARDA 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 · 2011-10-12CLIP VIOLATION NOTICEA 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 · 2011-10-12EXT A-VACANT LOT CLEAN/MAINTAIA 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 · 2012-06-06CLIP VIOLATION NOTICEA 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 · 2012-06-06VACANT LOT STANDARDA 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 · 2019-12-06WORKMANLIKE- 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 · 2019-12-06PERM - MUST POSTA 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 · 2019-12-06BP_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 · 2019-12-09BP_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 ↗
- License · 2000-05-03ALICE V MCALILEY: Vacant Residential Property / Lot landlord or residential registration initially issuedA 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 ↗
- License · 2001-02-28ALICE V MCALILEY: Vacant Residential Property / Lot landlord or residential registration marked inactiveA 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 ↗
- Appeal · 2026-06-24ZBA Permit Denial - VarianceA 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) medianAssessmentLand buyL&I violationAppealPermitInspectionLicense
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 record21 events · exact dates, newest first
- AppealZBA Permit Denial - Variance
- PermitNew Construction
- PermitNew Construction or Additions
- PermitPlumbing
- PermitNew Construction
- PermitNew Construction
- InspectionBP_BLDG
- L&I violationWORKMANLIKE- BUILDING CODE
- L&I violationPERM - MUST POST
- InspectionBP_BLDG
- PermitNew Construction
- PermitZoning/use
- Land buyLand record $240K
- L&I violationCLIP VIOLATION NOTICE
- L&I violationVACANT LOT STANDARD
- L&I violationCLIP VIOLATION NOTICE
- L&I violationEXT A-VACANT LOT CLEAN/MAINTAI
- L&I violationCLIP VIOLATION NOTICE
- L&I violationVACANT LOT STANDARD
- LicenseALICE V MCALILEY: Vacant Residential Property / Lot landlord or residential registration marked inactive
- LicenseALICE V MCALILEY: Vacant Residential Property / Lot landlord or residential registration initially issued
Flags: material assessment exemption; legal basis and term unverified · 1 zoning/board appeal on record. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$3,024/year estimated property tax
2026 taxable assessment $216,000 × 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 $1,239,900. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 1412729052026 OPA taxes $216,000 of $1,080,000 assessed. The assessment fields alone do not identify a program, approval date, expiration, or buyer eligibility.
See the assessment math →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 assessment exemption gap
OPA's 2026 roll shows a partial assessment exemption. The annual difference is measurable; the reason for it and what happens after a sale are not established here.
$216,000 taxable basis
Difference to verify+$12,094/year
$1,080,000 scenario basis
The assessment roll does not identify
- Legal basis or program
- Approval or expiration date
- Treatment after a sale
- Current Tax Center balance
Show the assessment math
2026: ($1,080,000 assessed − $864,000 exempt) × 1.3998% ≈ $3,024/year
Full-assessment scenario: $1,080,000 × 1.3998% ≈ $15,118/year
Do not treat the full-assessment scenario as inevitable or assume the current relief transfers. Obtain the approval history and verify the live Tax Center account before relying on either number.
The property, on paper
OPA physical field record.
Bedrooms
6
Stories
3
Interior
3,712 sqft
livable area
Lot
2,233 sqft
Basement
Full, finished
city code A
Central air
Yes
Exterior condition
Newer construction
city code 1
Newer construction
Interior condition
Newer construction
city code 1
Newer construction
Zoning
RSA5
city zoning code
Zoning appeals
1
In Process · 2026
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
1100 block of Mount Vernon St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 1121 Mount Vernon St · 1125 Mount Vernon St
L&I license dates · data through Jul 30, 2026
Business licenses at this address Latest pull
What L&I has registered at this OPA parcel, newest initial license date first.
No L&I business license is on record at this address in data through Jul 30, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
ALICE V MCALILEYInactive
Vacant Residential Property / Lot · Initial issue date May 3, 2000 · Terminal license date Feb 28, 2001
A license is an L&I registration, not proof that a business is open, operating today, or located at this storefront. Dates are license dates. Events are deduped by parcel, business identity, and license type, so a renewal is not shown as another opening. Other permit and filing types remain in the full source ledger.
Open every source row 21 dated rows
- AppealZBA Permit Denial - Variance
Appeal 30240 · In Process
PERMIT FOR THE LOT ADJUSTMENT TO CREATE TWO (2) LOTS (PARCEL 'A' AND PARCEL 'B') FROM ONE (1) EXISTING DEEDED LOT (1223 MOUNT VERNON ST) AND ONE (1) OPA ACCOUNTS (1123 MOUNT VERNON STREET, ACCOUNT NO 14 1 2729 05). ON EACH PROPOSED LOT, THE
- PermitNew Construction
Permit FP-2020-000770 · Completed
FOR THE INSTALLATION OF A FIRE SUPPRESSION SYSTEM IN ACCORDANCE WITH NFPA 2016, STANDARD 13R TO INCLUDE A 2-INCH DIAMETER SERVICE LINE, 2.5-INCH DIAMETER BACKFLOW PREVENTION ASSEMBLY, AND DRY SPRINKLER HEAD INSTALLATIONS.
- PermitNew Construction or Additions
Permit 1056137 · Completed
NEW DRAIN & WATER LINES TO FIXTURES 6-TOILETS, 6-LAVS, 6-TUB, 1-KITCHEN SINK, 1-LAUNDRY TUB & WATER HEATER, STACK & INSIDE HOUSE DRAIN THE INSTALLATION WILL COMPLY WITH THE PHILADELPHIA PLUMBING CODE 2004
- PermitPlumbing
Permit 1049916 · COMPLETED
INSTALL WATER SERVICE STORM AND SANITARY AS PER 2004 PPC
- PermitNew Construction
Permit 1046559 · Completed
COMPLETE NEW WIRING THROUGHOUT 200AMP SERVICE 120V INTERCONNECTED SMOKE DETECTORS AS PER 2014 NEC
- PermitNew Construction
Permit 1045632 · Completed
INSTALL CENTRAL AIR BASEMENT 80,000 BTU HEATER 3 TON OF AC WITH DUCTWORK, 2ND FLR 80,000 BTU HEATER 3 TON OF AIR WITH DUCTWORK
- InvestigationBP_BLDG
Case 718254 · PASSED
The cited inspection visit was marked passed.
- ViolationWORKMANLIKE- BUILDING CODE
Case 718254 · Violation 5262326 · Code A-104.1/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPERM - MUST POST
Case 718254 · Violation 5262327 · Code A-302.8/30 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationBP_BLDG
Case 718254 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitNew Construction
Permit 1020965 · Completed
ERECTION OF AN ATTACHED STRUCTURE FOR USE AS SINGLE FAMILY HOUSEHOLD LIVING. SHEETING AND SHORING AS PRESCRIBED IN GEO TECH REPORT. SEPARATE PERMITS REQUIRED FOR ELECTRICAL, MECHANICAL, PLUMBING AND SPRINKLER WORK. (NO UNDERPINNING ON THIS PERMIT). PRIOR TO ISSUANCE OF C.O SUBMITTAL OF AIR BARRIER CHECKLIST AND ENVELOPE TESTING CERTIFICATE IS REQUIRED. BOTH TO BE COMPLETED BY AN APPROVED PARTY. BUIDLING CONSTRUCTED IN ACCORDANCE WITH ATTAHCED RES CHECK SOFTWARE VERSION 4.6.5 Amend Permit 1-30-2021 - Change Engineer on Special Inspections.
- PermitZoning/use
Permit 997182 · COMPLETED
FOR THE ERECTION OF A FOUR (4) STORY ATTACHED STRUCTURE WITH ROOF DECK ACCESSED BY A ROOF DECK ACCESS STRUCTURE. FOR A SINGLE FAMILY HOUSEHOLD LIVING. SIZE AND LOCATION AS PER PLANS.
- Land recordLand record
2019
- ViolationCLIP VIOLATION NOTICE
Case 331629 · Violation 2463414 · Code CP-01 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- ViolationVACANT LOT STANDARD
Case 331629 · Violation 2463415 · Code PM-306.0/2 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- ViolationCLIP VIOLATION NOTICE
Case 301468 · Violation 2244031 · Code CP-01 · CLOSED
City marked the record closed; open the case for the closing reason.
- ViolationEXT A-VACANT LOT CLEAN/MAINTAI
Case 301468 · Violation 2244032 · Code PM-302.2/4 · CLOSED
City marked the record closed; open the case for the closing reason.
- ViolationCLIP VIOLATION NOTICE
Case 278023 · Violation 2079041 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVACANT LOT STANDARD
Case 278023 · Violation 2079042 · Code PM-306.0/2 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- License terminal eventALICE V MCALILEY: Vacant Residential Property / Lot landlord or residential registration marked inactive
License 274827 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventALICE V MCALILEY: Vacant Residential Property / Lot landlord or residential registration initially issued
License 274827 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
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 31, 2026, 3:13 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)