2026 assessment
$820K
OPA value, not a listing price
Multi-family report
4251 Sansom St
12 bd3,945 sqftRM1built 2022
Property at a glanceApartment building
Entity-held
ZIP 19104 area
University City · West Powelton
4200 block of Sansom St
Assessment and City record timeline
Published City assessments for this building 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$209K 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$209K 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$209K 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$280K 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$291K 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$291K 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$820K 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$820K 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$820K 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$820K 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$820K 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$1.3M 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 · 2021Land record $425KA 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 ↗
- Teardown · 2021DemolishedThis 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 · 2010-03-16ElectricalThis 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 · 2021-03-11AlterationsThis 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 · 2021-04-09Full DemolitionThis 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 · 2021-04-27Minor DemolitionThis 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 · 2021-08-26New 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 · 2021-09-02New 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 · 2022-02-01New 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 · 2022-02-02New 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 · 2022-03-15New 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 · 2022-04-04New 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 ↗
- L&I violation · 2020-01-31ARCHITECT/ENGINEER SERVICESA 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 · 2020-01-31UNSAFE STRUCTUREA 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 · 2020-01-31EXTERIOR STRUCT UNSAFE COND 7A 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 · 2020-01-25CSUINITIALA 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 · 2020-03-02CSUINITIALA 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 · 2021-02-24L&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 · 2021-04-20L&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 · 2021-07-14L&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 ↗
- License · 2023-01-064251SANSUMST LLC: Rental 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 · 2026-03-064251SANSUMST LLC: Rental 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 ↗
- License · 2010-04-23MARK & WENDY BERGANTZ: Rental 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 · 2018-02-28MARK & WENDY BERGANTZ: Rental landlord or residential registration marked closedA 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 19104 (University City · West Powelton) medianAssessmentLand buyTeardownL&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 record24 events · exact dates, newest first
- License4251SANSUMST LLC: Rental landlord or residential registration marked inactive
- License4251SANSUMST LLC: Rental landlord or residential registration initially issued
- PermitNew Construction
- PermitNew Construction or Additions
- PermitNew Construction
- PermitNew Construction
- PermitNew Construction
- PermitNew construction, addition, GFA change
- InspectionL&I investigation
- PermitMinor Demolition
- InspectionL&I investigation
- PermitFull Demolition
- PermitAlterations
- InspectionL&I investigation
- Land buyLand record $425K
- TeardownDemolished
- InspectionCSUINITIAL
- L&I violationARCHITECT/ENGINEER SERVICES
- L&I violationUNSAFE STRUCTURE
- L&I violationEXTERIOR STRUCT UNSAFE COND 7
- InspectionCSUINITIAL
- LicenseMARK & WENDY BERGANTZ: Rental landlord or residential registration marked closed
- LicenseMARK & WENDY BERGANTZ: Rental landlord or residential registration initially issued
- PermitElectrical
Flags: material assessment exemption; legal basis and term unverified. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$2,296/year estimated property tax
2026 taxable assessment $164,000 × 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 $1,295,100. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 2720222002026 OPA taxes $164,000 of $820,000 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.
$164,000 taxable basis
Difference to verify+$9,182/year
$820,000 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: ($820,000 assessed − $656,000 exempt) × 1.3998% ≈ $2,296/year
Full-assessment scenario: $820,000 × 1.3998% ≈ $11,478/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
12
Interior
3,945 sqft
livable area
Lot
1,777 sqft
Basement
Full, finished
city code A
Heat
Forced hot air
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
RM1
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Recorded owner
Who's behind it
4251sansumst LLC · corporate / LLC owner
• Tax bills mail to 50 Hawthorne Dr, Windsor NJ, 08550 — outside Philadelphia
Block context
4200 block of Sansom St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 4253 Sansom St · 4255 Sansom St
L&I license dates · data through Jul 10, 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 10, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
4251SANSUMST LLCInactive
Rental · Initial issue date Jan 6, 2023 · Terminal license date Mar 6, 2026
MARK & WENDY BERGANTZClosed
Rental · Initial issue date Apr 23, 2010 · Terminal license date Feb 28, 2018
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 23 dated rows
- License terminal event4251SANSUMST LLC: Rental landlord or residential registration marked inactive
License 913954 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue event4251SANSUMST LLC: Rental landlord or residential registration initially issued
License 913954 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitNew Construction
Permit EP-2022-003038 · Completed
New wire throughout: lighting, outlets, switches, smoke/CO alarms. Install 300 amp service and grounding as per 2017 NEC. Install fire alarm as per 2016 NFPA 72.
- PermitNew Construction or Additions
Permit PP-2022-002501 · Completed
INSTALL 1 BUILDING DRAIN, 1 CURB TRAP, 1 FAI, 1 1-I/2 INCH WATER SERVICE, 4 HUB DRAINS, 4 HOT WATER HEATERS, 4 AREA DRAINS, 8 LAVATORIES, 4 KITCHEN SINKS, 4 WASHING MACHINE BOXES, 8 SHOWER/TUBS, 8 WATER CLOSETS AND 1 ROOF DRAIN ACCORDING TO THE 2018 PPC.
- PermitNew Construction
Permit FP-2022-000268 · Completed
FOR THE INSTALLATION OF A NFPA 13R SYSTEM FOR A MULTI-FAMILY DWELLING SERVICED BY A TWO (2) INCH FIRE SERVICE LINE WITH A 2-INCH AMES 2000B-FP BACKFLOW PREVENTER AND AUTOMATIC FIRE SUPPRESSION SYSTEM. ALL WORK SHALL BE DONE IN ACCORDANCE WITH APPROVED PLANS/HYDRAULIC CALCULATIONS.
- PermitNew Construction
Permit MP-2022-000550 · Completed
FOR A NEW MECHANICAL INSTALLATION. WORK TO INCLUDE THE INSTALLATION OF REGISTERS, DIFFUSERS AND APPLIANCES WITH ASSOCIATED DUCTWORK. APPLIANCES TO BE INSTALLED IN ACCORDANCE WITH MANUFACTURER'S SPECIFICATIONS. ALL WORK TO BE DONE PER APPROVED PLANS. IF FIELD CONDITIONS VARY CONTACT DESIGN ENGINEER PRIOR TO THE START OF ANY WORK. SEPARATE PERMITS REQUIRED FOR ALL OTHER WORK.
- PermitNew Construction
Permit CP-2021-004774 · Completed
For the erection of a three (3) story structure with roof deck and roof deck access structure; for use as a four (4) family dwelling. Entire building to be sprinklered per NFPA 13R @ Min. Separate permit required for MEP and fire suppression work. Type B Dwelling unit on the 1st floor level.
- PermitNew construction, addition, GFA change
Permit ZP-2021-008364 · Completed
FOR THE ERECTION OF AN ATTACHED STRUCTURE WITH ROOF DECK ACCESSED BY A ROOF DECK ACCESS STRUCTURE; FOR USE AS MULTI-FAMILY (FOUR (4) DWELLING UNITS) HOUSEHOLD LIVING; SIZE AND LOCATION AS SHOWN IN THE APPLICATION/PLAN.
- InvestigationL&I investigation
Case 723110 · PASSED
The cited inspection visit was marked passed.
- PermitMinor Demolition
Permit DP-2021-000608 · Completed
FOR THE COMPLETE DEMOLITION OF AN EXISTING THREE (3) STORY ATTACHED STRUCTURE USING HANDHELD DEVICES ONLY. STREETS DEPARTMENT APPROVAL REQUIRED FOR SIDEWALK CLOSURE PRIOR TO START OF WORK.
- InvestigationL&I investigation
Case 723110 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitFull Demolition
Permit ZP-2021-003830 · Issued
Complete demolition of the existing structure.
- PermitAlterations
Permit PP-2021-004009 · Completed
Lateral Seal : ALL EXCAVATIONS AND PLUMBING TRENCHES IN EXCESS OF 5' IN DEPTH MUST HAVE APPR'D SHORING IN PLACE AT THE TIME OF INSPECTION
- InvestigationL&I investigation
Case 723110 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- Land recordLand record
2021
- InvestigationCSUINITIAL
Case 723110 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationARCHITECT/ENGINEER SERVICES
Case 723110 · Violation 211986953 · Code A-304.1/1 · COMPLIED
Resolution: COMPLIED - PERMIT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationUNSAFE STRUCTURE
Case 723110 · Violation 211986905 · Code PM15-108.1 · COMPLIED
Resolution: COMPLIED - PERMIT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTERIOR STRUCT UNSAFE COND 7
Case 723110 · Violation 211986906 · Code PM15-304.1G · COMPLIED
Resolution: COMPLIED - PERMIT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationCSUINITIAL
Case 723110 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License terminal eventMARK & WENDY BERGANTZ: Rental landlord or residential registration marked closed
License 499435 · Closed
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventMARK & WENDY BERGANTZ: Rental landlord or residential registration initially issued
License 499435 · Closed
License event. Registration does not prove present operation or storefront occupancy.
- PermitElectrical
Permit 266937 · COMPLETED
INCORPORATE NEW "HOUSE" METER W/ 4 CIRCUIT PANEL TO EXISTING SERVICE AS PER 2008 NEC (WEST DISTRICT)
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 18, 2026, 3:56 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)