2026 taxable assessment $304,700 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $311,000; it is not the 2026 billed-year value.
Multi-family report
4137 Westminster Ave
3 stories · 2,460 sqft · RM1 · built 1915
Individual, other or unknown mailing address · assessed $305K (2026) · 2027 OPA assessment $311K · 3 licensed units · sold 2×. On the 4100 block of Westminster Ave.
BlockReport AI · cited public records
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Property summary
Assessment$304,7002026 OPA assessment · 2027: $311,000
Last sale$17KRecorded 2014
Est. tax bill$4,265/year2026 taxable assessment × 1.3998%
Tax delinquencyNo 2022 matchNot proof account is current
Permits1Every fetched City permit
Violations0 open15 historical across 5 cases
“Open” reflects records available then historical records keep their source dates estimates are labeled
Question or correct this record
BlockReport can explain a discrepancy, but it cannot rewrite an official City record. Use the agency that owns the underlying fact:
Property tax
The estimate, live balance, and back-tax record are different.
BlockReport can calculate the annual tax from the City’s taxable assessment. Payments, credits, interest, and a current amount due live separately in Philadelphia Tax Center.
A Tax Center balance is net of bills, payments, credits, interest, and adjustments. A credit—or an amount due—is not automatically “back taxes.”
OPA 0620985002026 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.”
What stands out
From the public recordPermit on record
Record summary$75K transfer recorded in 2006. Use permit recorded in 2017.
View supporting records →What to do with this
The record, translated into moves — what a buyer, the owner, and a landlord would each want to check next under Philadelphia's actual rules.
If you’re buying
Built 1915: lead rules apply
Federal law requires a lead-paint disclosure at sale for any pre-1978 home. If it will be rented, Philadelphia also requires a lead-safe or lead-free certificate before a rental license can issue.
If you own it
Construction next door (4139 Westminster Ave, 2024)
Excavation deeper than 5 feet, or within 10 feet of an adjacent structure, legally requires the developer to survey neighboring homes first and give owners 10 days' written notice. Insist on the pre-construction survey — it is your evidence if cracks appear.
If you’re the landlord
Lead certificate is not optional
Built 1915: every rental unit needs a lead-safe or lead-free certificate on file with the City. Without one: fines up to $2,000/day per unit, tenants may withhold rent, courts can order rent refunded — and no eviction will stand.
Licensed rental — keep it that way
Renewal requires city tax clearance and zero open L&I violations on the property. A lapsed license suspends the right to collect rent or evict.
Derived from the fetched property records and linked City guidance as of 2026. Assessment treatment is not a substitute for an exemption approval, live balance, title report, license, occupancy certificate, or inspection. Informational only — not legal, tax, or investment advice.
Assessment and tax history
Every fetched annual City assessment for this building, compared with its block and ZIP. The figures show assessment change, the billed-year tax estimate, dated tax records, and recorded transfers. They do not estimate market appreciation or investment return.
Assessed value
$304,700
2026 billed-year assessment · 2027: $311,000 · built 1915
Price / sq ft
$126
block $104 · above block
Assessment change
+73%
+5%/yr since 2016 · 2027 +2% vs 2026
Est. tax bill / yr
$4,265
1.4% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Times sold
2
licensed rental
Assessment vs. the block and ZIP · every dated City record marked on the line
- OPA assessment · 2016$180K 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$180K 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$180K 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$109K 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$109K 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$109K 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$240K 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$240K 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$305K 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$305K 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$311K 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 · 2006Deed / sale $75KA 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 · 2014Deed / sale $17KA 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 · 2017-09-21UseThis 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 ↗
- L&I violation · 2012-07-06VACANT PROP STANDARD (likely: vacant-property enforcement standard)A legacy L&I label associated with vacant-property requirements. It may concern licensing, securing, or maintaining a vacant structure; the notice and cited code control, and this row alone does not prove the property is vacant now.Read Philadelphia Code §9-3905 ↗
- L&I violation · 2012-07-06EXT A-CLEAN WEEDS/PLANTS (Cut or remove weeds and overgrowth from the exterior area)Cut or remove weeds and overgrowth from the exterior areaHow L&I violations and orders work ↗
- L&I violation · 2012-07-06VACANT BLDG UNSECURED COUNTA 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 · 2014-01-08LICENSE-VAC RES BLDG (vacant residential building license required)This usually records a requirement to obtain a Vacant Structure License for an unoccupied residential building. Check later license and compliance rows because it does not establish present vacancy or an unresolved violation.How the City licenses vacant residential property ↗
- L&I violation · 2017-06-20ONE AND TWO FAMILY (R3)A 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 · 2017-12-11INTERIOR SURFACESA 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 · 2017-12-11ELECTRICAL -HAZARDA 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 · 2017-12-11HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- L&I violation · 2024-12-06PERIODIC TESTINGA 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 · 2024-12-06EXTERIOR STRUCTURE STAIRS, DECKS, PORCHESA 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 · 2024-12-06FIRE EXTINGUISHERSA 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 · 2024-12-06CARBON MONOXIDE ALARM LOCATIONA 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 · 2024-12-06MECHANICAL & ELECTRICAL- HEATING RESIDENTIALA 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 · 2024-12-06INTERIOR SURFACESA 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 · 2024-12-06ELECTRICAL- HAZARDA 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 · 2024-12-06EXTENSION CORDSA 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 · 2024-12-06L&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 · 2003-10-23L_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 · 2012-09-13HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- Inspection · 2013-12-30PRECOURT (likely: pre-court compliance inspection)A follow-up before or during enforcement escalation; confirm the case sequence in the City file.What Philadelphia inspections check ↗
- Inspection · 2014-04-16HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- Inspection · 2014-09-26PRECOURT (likely: pre-court compliance inspection)A follow-up before or during enforcement escalation; confirm the case sequence in the City file.What Philadelphia inspections check ↗
- Inspection · 2018-02-01HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- Inspection · 2025-04-07L&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 ↗
- License · 2014-06-04Vacant Residential Property / LotA 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 · 2015-07-31Vacant Residential Property / LotA 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 · 2016-05-27RentalA 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 ↗
- Certification · 2025-03-05Fire Alarm CertificationA filed inspection or certification for a regulated building system or component. Check the result, expiration date, and latest filing before treating it as current.What Philadelphia inspections check ↗
Property assessmentBlock median & rangeZIP 19104 medianAssessmentDeed / saleL&I violationPermitInspectionLicenseCertification
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 record31 events · exact dates, newest first
- InspectionL&I investigation
- CertificationFire Alarm Certification
- L&I violationPERIODIC TESTING
- L&I violationEXTERIOR STRUCTURE STAIRS, DECKS, PORCHES
- L&I violationFIRE EXTINGUISHERS
- L&I violationCARBON MONOXIDE ALARM LOCATION
- L&I violationMECHANICAL & ELECTRICAL- HEATING RESIDENTIAL
- L&I violationINTERIOR SURFACES
- L&I violationELECTRICAL- HAZARD
- L&I violationEXTENSION CORDS
- InspectionL&I investigation
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationINTERIOR SURFACES
- L&I violationELECTRICAL -HAZARD
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- PermitUse
- L&I violationONE AND TWO FAMILY (R3)
- LicenseRental
- LicenseVacant Residential Property / Lot
- InspectionPRECOURT (likely: pre-court compliance inspection)
- LicenseVacant Residential Property / Lot
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationLICENSE-VAC RES BLDG (vacant residential building license required)
- Deed / saleDeed / sale $17K
- InspectionPRECOURT (likely: pre-court compliance inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationVACANT PROP STANDARD (likely: vacant-property enforcement standard)
- L&I violationEXT A-CLEAN WEEDS/PLANTS (Cut or remove weeds and overgrowth from the exterior area)
- L&I violationVACANT BLDG UNSECURED COUNT
- Deed / saleDeed / sale $75K
- InspectionL_INITIAL
The paper trail
Permit on record$75K transfer recorded in 2006. Use permit recorded in 2017.
- 2006 $75KTransfer
- 2012 3 L&I violationsL&I
- 2014 L&I violationL&I$17KTransfer
- 2017 3 L&I violationsL&IL&I: 2 failed, 2 passedL&I visitUsePermit
- 2018 Inspection passed ×2L&I visit
- 2024 8 L&I violationsL&IInspection failedL&I visit
- 2025 L&I: 1 failed, 1 passedL&I visit
Records behind the chart
Browse the source ledger
The chart above is the primary timeline. This drawer preserves every underlying dated row and its filed status for source-level review.
Browse 36 dated records deeds, permits, inspections, licenses, violations, certifications & appeals
- InvestigationL&I investigation
Case CF-2024-125520 · PASSED
The cited inspection visit was marked passed.
- CertificationFire Alarm Certification
Certification BC-2025-008662 · Certified
Expires 2026-03-05
- InvestigationL&I investigation
Case CF-2024-125520 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationPERIODIC TESTING
Case CF-2024-125520 · Violation VI-2024-097078 · Code F-901.6.4 · COMPLIED
Resolution: COMPLIED - LICENSE/CERTIFICATE/REPORT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTERIOR STRUCTURE STAIRS, DECKS, PORCHES
Case CF-2024-125520 · Violation VI-2024-097079 · Code PM15-304.10 · CLOSED
Resolution: CLOSED - REISSUED/REWRITTEN City marked the record closed; open the case for the closing reason.
- ViolationFIRE EXTINGUISHERS
Case CF-2024-125520 · Violation VI-2024-097080 · Code F-906.2 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCARBON MONOXIDE ALARM LOCATION
Case CF-2024-125520 · Violation VI-2024-097081 · Code F-1103.9.1 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationMECHANICAL & ELECTRICAL- HEATING RESIDENTIAL
Case CF-2024-125520 · Violation VI-2024-097082 · Code PM15-602.2 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationINTERIOR SURFACES
Case CF-2024-125520 · Violation VI-2024-097083 · Code PM15-305.3 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationELECTRICAL- HAZARD
Case CF-2024-125520 · Violation VI-2024-097084 · Code PM15-604.3 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXTENSION CORDS
Case CF-2024-125520 · Violation VI-2024-097085 · Code F-604.5 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 456240 · PASSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked passed.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 615230 · PASSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked passed.
- ViolationINTERIOR SURFACES
Case 615230 · Violation 4532137 · Code PM15-305.3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationELECTRICAL -HAZARD
Case 615230 · Violation 4532138 · Code PM15-604.3 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 615230 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitUse
Permit 818025 · COMPLETED
FOR A MULTI-FAMILY HOUSEHOLD LIVING ( THREE(3) DWELLING UNITS) IN AN EXISTING STRUCTURE.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 602622 · PASSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked passed.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 589733 · PASSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked passed.
- ViolationONE AND TWO FAMILY (R3)
Case 589733 · Violation 4357208 · Code 9-3902 (1) · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 589733 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- LicenseRental
License 703261 · Active
Lawrence Onyiaorah (Lawrence Onyiaorah) · Expires 2027-05-26
- LicenseVacant Residential Property / Lot
License 672905 · Closed
Lawrence Onyiaorah (Lawrence Onyiaorah) · Expires 2016-07-31
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 415861 · PASSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.
- LicenseVacant Residential Property / Lot
License 631161 · Inactive
SEAN GREGORY · Expires 2015-02-28 · Inactive 2015-04-29
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 415861 · CLOSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. City marked the record closed; open the case for the closing reason.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 415861 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationLICENSE-VAC RES BLDG (vacant residential building license required)
Case 415861 · Violation 3148694 · Code PM-102.4/2 · COMPLIED
This usually records a requirement to obtain a Vacant Structure License for an unoccupied residential building. Check later license and compliance rows because it does not establish present vacancy or an unresolved violation. City marked this violation complied with; check the resolution date and live case for what was accepted.
- Recorded transfer$17K transfer
2014
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 337604 · CLOSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. City marked the record closed; open the case for the closing reason.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 337604 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationVACANT PROP STANDARD (likely: vacant-property enforcement standard)
Case 337604 · Violation 3048995 · Code PM-306.0/1 · CLOSEDCASE
A legacy L&I label associated with vacant-property requirements. It may concern licensing, securing, or maintaining a vacant structure; the notice and cited code control, and this row alone does not prove the property is vacant now. City marked the case closed; that does not mean the original condition never existed.
- ViolationEXT A-CLEAN WEEDS/PLANTS (Cut or remove weeds and overgrowth from the exterior area)
Case 337604 · Violation 3048994 · Code PM-302.3/1 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- ViolationVACANT BLDG UNSECURED COUNT
Case 337604 · Violation 3048996 · Code PM-306.2/1 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- Recorded transfer$75K transfer
2006
- InvestigationL_INITIAL
Case 17839 · CLOSED
City marked the record closed; open the case for the closing reason.
What this record suggests
The City file documents 1 permit. 1 carries a completed, issued, or approved status; that documents the filing, not the present quality of the work.
Flags: active rental license. Informational only — not investment advice or a consumer report (FCRA).
The property, on paper
The city assessor's field record — the physical spec sheet behind the assessed number.
Stories
3
Interior
2,460 sqft
livable area
Lot
1,615 sqft
Central air
No
Exterior condition
Below average
city code 5
Above averageBelow average
Interior condition
Average
city code 4
Above averageBelow average
Quality grade
B
assessor's grade
ABCDE
Zoning
RM1
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Run the numbers
What owning 4137 Westminster Ave takes, at your price and your rate. Taxes start with an annual estimate from the City’s taxable assessment, not a current bill or balance; rent starts at 3 licensed units × ~85% of the area's median unit rent — the whole building's income, not one unit's. Assessed value is not an asking price — set the price slider to the real one.
When this house last sold (2014) a 30-year mortgage ran about 4.17% — Freddie Mac's average that year.
Mortgage
—
P&I · 30-yr fixed
All-in monthly
—
+ taxes & insurance
Estimated cash needed
—
down + 4% planning allowance
Modeled cash flow
—
rent − shown costs · /mo
Modeled cap rate
—
modeled NOI ÷ price
Modeled cash-on-cash
—
modeled year-1 return
Scenario for orientation, not advice. Assumes a 30-year fixed loan, $2,100/yr insurance, 1% of price/yr maintenance, and buyer cash equal to the down payment plus 4%. Taxes use this parcel's taxable assessment, not a live Tax Center balance. Cash flow and returns exclude vacancy, management, utilities, HOA or condo fees, leasing costs, income tax, and unplanned capital work.
Block context
4137 Westminster Ave sits on the 4100 block of Westminster Ave. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 4135 Westminster Ave · 4139 Westminster Ave
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 10, 2026, 3:37 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)