2026 assessment
$78K
OPA value, not a listing price
Land report
3923 Mount Vernon St
Property at a glanceVacant lot
Mkm Investment Holdings LLC
2027 published assessment
$51K
Future roll, not the current tax bill
Location
3900 block of Mount Vernon St
ZIP 19104
Neighborhood area
University City · West Powelton
Approximate · based on ZIP 19104
Assessment and City record timeline
The line tracks this property’s published City assessment. Markers show deeds, permits, inspections, licenses, violations, certifications, and appeals on their recorded dates. Select one to read the filing.
Assessments are tax-roll values, not sale prices or appraisals. OPA has published a 2027 assessment of $50,700. It is not yet the billed-year tax basis.
- OPA assessment · 2016$12K 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$27K 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$27K 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$27K 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$27K 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$27K 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$27K 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$29K 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$29K 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$78K 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$78K 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$51K 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 · 2025-12-17New construction, addition, GFA changeThis 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 · 2026-04-16New 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 · 2026-06-18New 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 · 2026-06-25New 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 ↗
- Permit · 2026-06-26ExcavationThis 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 · 2013-04-12CLIP 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 · 2013-04-12EXT 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 · 2014-10-03EXT 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 · 2014-10-03CLIP 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 · 2015-05-07CLIP 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 · 2015-05-07EXT 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 · 2016-07-05CLIP 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 · 2016-07-05EXT 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 · 2016-08-29EXT 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 · 2016-08-29CLIP 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 · 2018-06-21CLIP 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 · 2018-06-21EXT 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 · 2022-11-07RUBBISH & GARBAGEA 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 · 2022-11-07L&I investigationA 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 ↗
- L&I violation · 2023-07-14RUBBISH & GARBAGEA 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 · 2023-07-14EXTERIOR AREA WEEDSA 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 · 2023-07-14L&I investigationA 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 · 2002-08-21L_INITIALA 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 · 2022-12-08L&I investigationA 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 · 2023-08-04L&I investigationA 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 ↗
- Appeal · 2026-01-21ZBA 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 assessmentAssessmentL&I violationAppealPermitInspection
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 record26 events · exact dates, newest first
- PermitExcavation
- PermitNew Construction
- PermitNew Construction or Additions
- PermitNew Construction
- AppealZBA Permit Denial - Variance
- PermitNew construction, addition, GFA change
- InspectionL&I investigation
- L&I violationRUBBISH & GARBAGE
- L&I violationEXTERIOR AREA WEEDS
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationRUBBISH & GARBAGE
- InspectionL&I investigation
- L&I violationCLIP VIOLATION NOTICE
- L&I violationEXT A-VACANT LOT CLEAN/MAINTAI
- L&I violationEXT A-VACANT LOT CLEAN/MAINTAI
- L&I violationCLIP VIOLATION NOTICE
- L&I violationCLIP VIOLATION NOTICE
- L&I violationEXT A-VACANT LOT CLEAN/MAINTAI
- L&I violationCLIP VIOLATION NOTICE
- L&I violationEXT A-VACANT LOT CLEAN/MAINTAI
- L&I violationEXT A-VACANT LOT CLEAN/MAINTAI
- L&I violationCLIP VIOLATION NOTICE
- L&I violationCLIP VIOLATION NOTICE
- L&I violationEXT A-VACANT LOT CLEAN/MAINTAI
- InspectionL_INITIAL
Verify the public record
Property tax
$1,088/year estimated property tax
2026 taxable assessment $77,700 × 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 $50,700. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 2422133002026 taxable assessment equals the full assessed value.
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 $5,778.18 and a lien entry. It is shown as historical context only.
1997$219.43 total · $66.91 principal · $115.42 interest · $4.68 penalty1998$213.05 total · $66.91 principal · $109.40 interest · $4.68 penalty1999$206.66 total · $66.91 principal · $103.37 interest · $4.68 penalty2000$200.28 total · $66.91 principal · $97.35 interest · $4.68 penalty2001$193.90 total · $66.91 principal · $91.33 interest · $4.68 penalty2002$338.70 total · $127.73 principal · $162.86 interest · $8.94 penalty2003$326.51 total · $127.73 principal · $151.36 interest · $8.94 penalty2004$314.33 total · $127.73 principal · $139.87 interest · $8.94 penalty2005$302.14 total · $127.73 principal · $128.37 interest · $8.94 penalty2006$289.95 total · $127.73 principal · $116.87 interest · $8.94 penalty2007$277.77 total · $127.73 principal · $105.38 interest · $8.94 penalty2008$265.58 total · $127.73 principal · $93.88 interest · $8.94 penalty2009$253.40 total · $127.73 principal · $82.39 interest · $8.94 penalty2010$241.21 total · $127.73 principal · $70.89 interest · $8.94 penalty2011$249.60 total · $140.37 principal · $65.27 interest · $9.83 penalty2012$466.77 total · $290.90 principal · $109.09 interest · $20.36 penalty2013$455.03 total · $302.04 principal · $86.09 interest · $21.14 penalty2014$339.86 total · $184.92 principal · $36.06 interest · $12.94 penalty2015$322.22 total · $184.92 principal · $19.42 interest · $12.94 penalty2016$301.79 total · $193.18 principal · $2.90 interest · $1.93 penalty
For a purchase, refinance, or closing, request the City’s official Property Payoff statement in Tax Center under “More options.”
Land report
Vacant land
Vacant land. Deeds, ownership, zoning, and the public-source record follow.
Historical lien entry · through 2016
What it is
Vacant lot
Vacant Land Reside < Acre
Owner
Mkm Investment Holdings LLC
Lot size
1,181 sqft
Zoning
RSA5
Block context
3900 block of Mount Vernon St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 3921 Mount Vernon St · 3925 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 26 dated rows
- PermitExcavation
Permit SP-2026-000418 · Issued
Site / Utility Permit for RP-2026-001915
- PermitNew Construction
Permit FP-2026-000958 · Issued
INSTALL NEW FIRE SUPPRESSION SYSTEM AND 1-1/2” COMBINED SERVICE IN ACCORDANCE WITH NFPA 13D THROUGHOUT THE ENTIRE BUILDING. ALL WORK SHALL COMPLY WITH THE APPROVED PLANS. ALL WORK SHALL BE PERFORMED BY A FIRE SUPPRESSION CONTRACTOR LICENSED BY THE CITY OF PHILADELPHIA.
- PermitNew Construction or Additions
Permit PP-2026-004523 · Issued
Plumbing Permit (Interior) for combo RP-2026-001915
- PermitNew Construction
Permit RP-2026-001915 · Issued
FOR THE ERECTION OF AN ATTACHED 3-STORY STRUCTURE WITH ROOF ACCESS STRUCTURE FOR ACCESS TO AN OCCUPIABLE ROOF DECK. STRUCTURE FOR USE AS TWO-FAMILY HOUSEHOLD LIVING. THE BUILDING IS FULLY SPRINKLERED IN ACCORDANCE WITH NFPA 13D. ALL WORK TO BE DONE PER APPROVED PLANS. IF FIELD CONDITIONS VARY CONTACT DESIGN ENGINEER PRIOR TO THE START OF ANY WORK. SEPARATE PERMIITS TO BE OBTAINED FOR ALL OTHER WORK. **A COVERED WALKWAY OR SIDEWALK CLOSURE SHALL BE REQUIRED WITHIN 8 FEET OF THE BUILDING FACADE IN ACCORDANCE WITH SECTION 3306 OF THE 2018 IBC. SEPARATE BUILDING AND/OR STREETS DEPARTMENT PERMIT REQUIRED PRIOR TO THE START OF ANY WORK. ** BLOWER DOOR TESTING SHALL BE PERFORMED IN ACCORDANCE WITH ASTM E 779 OR ASTM E 1827 BY AN APPROVED THIRD-PARTY AGENCY **EXCAVATION PERMIT REQUIRED**
- AppealZBA Permit Denial - Variance
Appeal ZP-2025-003949 · Completed · Granted with conditions
Related permit ZP-2025-003949 · PERMIT FOR THE ERECTION OF AN ATTACHED NEW STRUCTURE WITH A CELLAR AND AN ACCESSORY ROOF DECK (FOR RESIDENTIAL USE ONLY) WITH ROOF ACCESS STRUCTURE. SIZE AND LOCATION AS SHOWN IN THE APPLICATION / PLAN. USE: – FOR HOUSEHOLD LIVING TWO (2)
- PermitNew construction, addition, GFA change
Permit ZP-2025-003949 · Issued
FOR THE ERECTION OF AN ATTACHED NEW STRUCTURE WITH A CELLAR AND AN ACCESSORY ROOF DECK (FOR RESIDENTIAL USE ONLY) WITH ROOF ACCESS STRUCTURE AND REAR SECON FLOOR BALCONY. SIZE AND LOCATION AS SHOWN IN THE APPLICATION / PLAN.
- InvestigationL&I investigation
Case CF-2023-067020 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationRUBBISH & GARBAGE
Case CF-2023-067020 · Violation VI-2023-050633 · Code PM15-308.1 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTERIOR AREA WEEDS
Case CF-2023-067020 · Violation VI-2023-050632 · Code PM15-302.4 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2023-067020 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2022-113049 · PASSED
The cited inspection visit was marked passed.
- ViolationRUBBISH & GARBAGE
Case CF-2022-113049 · Violation VI-2022-084206 · Code PM15-308.1 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2022-113049 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationCLIP VIOLATION NOTICE
Case 640364 · Violation 4716460 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-VACANT LOT CLEAN/MAINTAI
Case 640364 · Violation 4716461 · Code PM-302.2/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-VACANT LOT CLEAN/MAINTAI
Case 552645 · Violation 4065220 · Code PM-302.2/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 552645 · Violation 4065219 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 542825 · Violation 3998978 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-VACANT LOT CLEAN/MAINTAI
Case 542825 · Violation 3998979 · Code PM-302.2/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 478789 · Violation 3548760 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-VACANT LOT CLEAN/MAINTAI
Case 478789 · Violation 3548761 · Code PM-302.2/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-VACANT LOT CLEAN/MAINTAI
Case 455529 · Violation 3348740 · Code PM-302.2/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 455529 · Violation 3348739 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 375961 · Violation 2763301 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT A-VACANT LOT CLEAN/MAINTAI
Case 375961 · Violation 2763302 · Code PM-302.2/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL_INITIAL
Case 1130 · CLOSED
City marked the record closed; open the case for the closing reason.
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)