House report

640 Mayfair St

3 bd · 1 ba · 2 stories · 1,180 sqft · RSA5 · built 1950

Property at a glanceHouse

Owner-occupancy signal

2026 assessment
$197K OPA value, not a listing price
2027 published assessment
$208K Future roll, not the current tax bill
Neighborhood area
Olney · Logan Approximate · based on ZIP 19120
Street view of 640 Mayfair St
From the street · imagery © Google

Assessment and dated record history

Every fetched annual City assessment for this house, compared with its block and ZIP. The chart preserves property assessment, block median and range, ZIP median, and each dated assessment, deed, L&I, permit, and inspection event.

Assessed value
$196,600 2026 billed-year assessment · 2027: $207,800 · built 1950
Price / sq ft
$176 block $176 · in line w/ block
Assessment change
+98% +6%/yr since 2016 · 2027 +6% vs 2026
Est. tax bill / yr
$2,752 1.4% effective
Jun 2022 tax snapshot
No match not proof the account is current
Times sold
1 licensed rental

Assessment vs. the block and ZIP · every dated City record marked on the line

$0$125K$250KZIP 19120 (Olney · Logan) median$208K2001200620112016202120262027
Property assessmentBlock median & rangeZIP 19120 (Olney · Logan) medianAssessmentDeed / saleL&I violationInspectionLicense

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 record35 events · exact dates, newest first
  1. InspectionL&I investigation
  2. L&I violationEXTERIOR AREA WEEDS
  3. InspectionL&I investigation
  4. InspectionL&I investigation
  5. L&I violationEXTERIOR AREA WEEDS
  6. InspectionL&I investigation
  7. InspectionL&I investigation
  8. L&I violationEXTERIOR AREA WEEDS
  9. InspectionL&I investigation
  10. InspectionL&I investigation
  11. L&I violationEXTERIOR AREA WEEDS
  12. InspectionL&I investigation
  13. LicenseShui Qing Wang (rental): Rental landlord or residential registration initially issued
  14. InspectionL&I investigation
  15. L&I violationEXTERIOR AREA SANITATION
  16. L&I violationEXTERIOR AREA WEEDS
  17. InspectionL&I investigation
  18. L&I violationCLIP VIOLATION NOTICE
  19. L&I violationHIGH WEEDS-CUT
  20. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  21. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  22. L&I violationPLUMB SYS-SANITARY MAINTENA
  23. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  24. InspectionPRECOURT (likely: pre-court compliance inspection)
  25. InspectionPRECOURT (likely: pre-court compliance inspection)
  26. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  27. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  28. L&I violationDRAINAGE-YARD DRAIN REPAIR
  29. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  30. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  31. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  32. L&I violationDRAINAGE-YARD DRAIN REPAIR
  33. L&I violationDRAINAGE-ROOF/YARDS/OPEN AREAS
  34. InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
  35. Deed / saleDeed / sale $53K

The short read

recorded transfer $53K (2001); Inspection passed (2017); 2 L&I violations (2019); 2 L&I violations (2020); L&I: 1 failed, 1 passed (2020); 2 L&I violations (2023); L&I: 2 failed, 2 passed (2023); 2 L&I violations (2024); L&I: 2 failed, 2 passed (2024).

A selected summary of the main sequence. The chart above and source ledger below contain every fetched dated row.

Browse 35 dated records

Deeds, permits, inspections, licenses, violations, certifications, and appeals.

Open the City record ↗
Open the source ledger 35 dated rows
  1. InvestigationL&I investigation

    Case CF-2024-109535 · PASSED

    The cited inspection visit was marked passed.

  2. ViolationEXTERIOR AREA WEEDS

    Case CF-2024-109535 · Violation VI-2024-084444 · 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.

  3. InvestigationL&I investigation

    Case CF-2024-109535 · FAILED

    The cited inspection visit was marked failed; later rows may show follow-up or resolution.

  4. InvestigationL&I investigation

    Case CF-2024-058508 · PASSED

    The cited inspection visit was marked passed.

  5. ViolationEXTERIOR AREA WEEDS

    Case CF-2024-058508 · Violation VI-2024-046848 · 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.

  6. InvestigationL&I investigation

    Case CF-2024-058508 · FAILED

    The cited inspection visit was marked failed; later rows may show follow-up or resolution.

  7. InvestigationL&I investigation

    Case CF-2023-110225 · PASSED

    The cited inspection visit was marked passed.

  8. ViolationEXTERIOR AREA WEEDS

    Case CF-2023-110225 · Violation VI-2023-082536 · 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.

  9. InvestigationL&I investigation

    Case CF-2023-110225 · FAILED

    The cited inspection visit was marked failed; later rows may show follow-up or resolution.

  10. InvestigationL&I investigation

    Case CF-2023-040969 · PASSED

    The cited inspection visit was marked passed.

  11. ViolationEXTERIOR AREA WEEDS

    Case CF-2023-040969 · Violation VI-2023-031572 · 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.

  12. InvestigationL&I investigation

    Case CF-2023-040969 · FAILED

    The cited inspection visit was marked failed; later rows may show follow-up or resolution.

  13. License issue eventShui Qing Wang (rental): Rental landlord or residential registration initially issued

    License 863381 · Active

    License event. Registration does not prove present operation or storefront occupancy.

  14. InvestigationL&I investigation

    Case CF-2020-065942 · PASSED

    The cited inspection visit was marked passed.

  15. ViolationEXTERIOR AREA SANITATION

    Case CF-2020-065942 · Violation VI-2020-037299 · Code PM15-302.1 · COMPLIED

    Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.

  16. ViolationEXTERIOR AREA WEEDS

    Case CF-2020-065942 · Violation VI-2020-037300 · 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.

  17. InvestigationL&I investigation

    Case CF-2020-065942 · FAILED

    The cited inspection visit was marked failed; later rows may show follow-up or resolution.

  18. ViolationCLIP VIOLATION NOTICE

    Case 688082 · Violation 5057537 · Code CP-01 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  19. ViolationHIGH WEEDS-CUT

    Case 688082 · Violation 5057538 · Code CP-312A · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  20. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 562618 · 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.

  21. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 562618 · 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.

  22. ViolationPLUMB SYS-SANITARY MAINTENA

    Case 562618 · Violation 4167465 · Code PM15-506.2 · CLOSEDCASE

    City marked the case closed; that does not mean the original condition never existed.

  23. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 562618 · 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.

  24. InvestigationPRECOURT (likely: pre-court compliance inspection)

    Case 476810 · NONE

    A follow-up before or during enforcement escalation; confirm the case sequence in the City file.

  25. InvestigationPRECOURT (likely: pre-court compliance inspection)

    Case 476810 · PASSED

    A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.

  26. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 476810 · 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.

  27. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 476810 · 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.

  28. ViolationDRAINAGE-YARD DRAIN REPAIR

    Case 476810 · Violation 3626493 · Code PM-302.4/8 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  29. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 476810 · 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.

  30. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 451525 · 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.

  31. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 451525 · 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.

  32. ViolationDRAINAGE-YARD DRAIN REPAIR

    Case 451525 · Violation 3369202 · Code PM-302.4/8 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  33. ViolationDRAINAGE-ROOF/YARDS/OPEN AREAS

    Case 451525 · Violation 3369201 · Code PM-302.4/2 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  34. InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)

    Case 451525 · 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.

  35. Recorded transfer$53K transfer

    2001

What this record suggests

1 dated deed record matched this parcel. Timing is a research lead, not proof of renovation, condition, or motive.

Unavailable when this report assembled: certifications. Unavailable does not mean no record.

Flags: active rental license. Informational only — not investment advice or a consumer report (FCRA).

Preparing this comparison.

Compare nearby property records

The subject property stays pinned above and is excluded from this comparable list. Repeated condominium addresses include their OPA parcel number.

Property details and source records

The visual history and live comparison stay above. Use these focused views for tax, ownership, nearby-block, and supporting City records.

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.

Estimated annual Real Estate Tax$2,752/year

2026 taxable assessment $196,600 × 1.3998%. This is an estimate, not a bill or account balance.

OPA also publishes a 2027 assessment of $207,800; it is not the 2026 billed-year value.

Official current account balanceCheck live

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 351063500
Open Philadelphia Tax Center →Choose “View period balance” to see the tax year and any credit, interest, or delinquency.
Exemption classificationNo exemption shown

2026 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.”

The property, on paper

OPA physical field record.

Bedrooms
3
Bathrooms
1
Stories
2
Interior
1,180 sqft livable area
Lot
1,693 sqft
Basement
Full city code D
Heat
Hot water / radiators city code B
Central air
Yes
Garage
1 space
Exterior condition
Average city code 4
Interior condition
Average city code 4
Quality grade
C assessor's grade
Zoning
RSA5 city zoning code

OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.

Block context

600 block of Mayfair St. Compare parcels, ownership, and public-record history.

See the whole block →

Next door: 638 Mayfair St  ·  642 Mayfair St

Business licenses at this address Latest pull

What L&I has registered at this OPA parcel, newest initial license date first.

Open the City record ↗

No L&I business license is on record at this address in data through Jul 21, 2026.

Landlord and residential filings

These are property registrations or landlord filings, not businesses operating at this address.

Shui Qing Wang (rental)Active

Rental · Initial issue date Mar 11, 2021 · Filed expiration Mar 10, 2027

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.

Where this comes from

Methodology & freshness

This report was assembled Jul 22, 2026, 7:40 AM 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: unavailable. “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)