2026 assessment
$76K
OPA value, not a listing price
House report
637 W Mayfield St
3 bd1 ba2 stories980 sqftRM1built 1920
Property at a glanceHouse
Owner-occupancy signal
ZIP 19133 area
Fairhill · West Kensington
600 block of W Mayfield St
Open L&I record
Open City history ↗3 violation rows marked OPEN in 1 active case
The actual City titles, code sections, case posture, and latest recorded inspections are shown here instead of only an aggregate count.
Case CF-2026-069520
IN VIOLATIONNotice Of Violation
- Alter Exterior Portion
A-301.1/3 - New Electrical Service
A-301.1/49 - Unapproved Used Materials
A-203.2/1
OPEN is the status in the fetched L&I file, not a new inspection by BlockReport. Read the notice for the cited condition and required correction, then verify the live case with L&I.
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$40K 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$40K 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$40K 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$43K 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$33K 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$33K 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$33K 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$61K 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$61K 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$76K 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$76K 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$76K 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 · 2011Deed / sale $9KA 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 · 2025Deed / sale $25KA 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 · 2011-07-26PlumbingThis 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 ↗
- L&I violation · 2025-01-01VACANT & OPENA 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 · 2025-01-01L&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 · 2026-06-12ALTER EXTERIOR PORTIONA 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 · 2026-06-12NEW ELECTRICAL SERVICEA 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 · 2026-06-12UNAPPROVED USED MATERIALSA 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 · 2026-06-12L&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 · 2025-08-12L&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 · 2012-10-26MELISSA OSTIGUIN: 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 · 2015-04-29MELISSA OSTIGUIN: 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 ↗
Property assessmentBlock median & rangeZIP 19133 (Fairhill · West Kensington) medianAssessmentDeed / saleL&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 record12 events · exact dates, newest first
- L&I violationALTER EXTERIOR PORTION
- L&I violationNEW ELECTRICAL SERVICE
- L&I violationUNAPPROVED USED MATERIALS
- InspectionL&I investigation
- InspectionL&I investigation
- L&I violationVACANT & OPEN
- InspectionL&I investigation
- Deed / saleDeed / sale $25K
- LicenseMELISSA OSTIGUIN: Rental landlord or residential registration marked inactive
- LicenseMELISSA OSTIGUIN: Rental landlord or residential registration initially issued
- PermitPlumbing
- Deed / saleDeed / sale $9K
Flags: 3 L&I violation rows marked OPEN · historical tax ledger through 2016 recorded $320 with a lien entry. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$1,057/year estimated property tax
2026 taxable assessment $75,500 × 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 $75,500. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 3724337002026 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 $319.96 and a lien entry. It is shown as historical context only.
2015$102.34 total · $0.00 principal · $5.91 interest · $3.94 penalty2016$217.62 total · $115.70 principal · $1.74 interest · $1.16 penalty
For a purchase, refinance, or closing, request the City’s official Property Payoff statement in Tax Center under “More options.”
Where the record looks off
Conflicts in City paperwork. Flags on the data, not the property.
Assessment and sale price disagree hard
Assessed at $76K, but it traded for $25,000 in 2025 — a 3.0× gap. Could be a non-market deed the record doesn't label, or an assessment that hasn't caught up.
The property, on paper
OPA physical field record.
Bedrooms
3
Bathrooms
1
Stories
2
Interior
980 sqft
livable area
Lot
700 sqft
Basement
Full
city code D
Heat
Undetermined
city code H
Central air
No
Exterior condition
Average
city code 4
Above averageBelow average
Interior condition
Average
city code 4
Above averageBelow average
Quality grade
C
assessor's grade
ABCDE
Zoning
RM1
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
600 block of W Mayfield St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 635 W Mayfield St · 639 W Mayfield St
L&I license dates · data through Jul 23, 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 23, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
MELISSA OSTIGUINInactive
Rental · Initial issue date Oct 26, 2012 · Terminal license date Apr 29, 2015
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 12 dated rows
- ViolationALTER EXTERIOR PORTION
Case CF-2026-069520 · Violation VI-2026-043082 · Code A-301.1/3 · OPEN
The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.
- ViolationNEW ELECTRICAL SERVICE
Case CF-2026-069520 · Violation VI-2026-043083 · Code A-301.1/49 · OPEN
The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.
- ViolationUNAPPROVED USED MATERIALS
Case CF-2026-069520 · Violation VI-2026-043084 · Code A-203.2/1 · OPEN
The individual violation row was marked open in the assembled City file; verify the live notice and any later inspection.
- InvestigationL&I investigation
Case CF-2026-069520 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2025-000001 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- Recorded transfer$25K transfer
2025
- ViolationVACANT & OPEN
Case CF-2025-000001 · Violation VI-2025-000001 · Code PM15-108.2 · COMPLIED
Resolution: COMPLIED - BY ENFORCEMENT ACTION City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2025-000001 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License terminal eventMELISSA OSTIGUIN: Rental landlord or residential registration marked inactive
License 576647 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventMELISSA OSTIGUIN: Rental landlord or residential registration initially issued
License 576647 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitPlumbing
Permit 354985 · COMPLETED
5" LATERAL CURB TRAP
- Recorded transfer$9K transfer
2011
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, 8:04 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)