2026 assessment
$196K
OPA value, not a listing price
House report
611 Mayfair St
3 bd · 1 ba · 2 stories · 1,180 sqft · RSA5 · built 1950
Property at a glanceHouse
Individual, other or unknown mailing address
2027 published assessment
$208K
Future roll, not the current tax bill
Location
600 block of Mayfair St
ZIP 19120
Neighborhood area
Olney · Logan
Approximate · based on ZIP 19120
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
$196,400
2026 billed-year assessment · 2027: $207,700 · 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
$2,749
1.4% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Times sold
1
latest deed has shared-name parties
Assessment vs. the block and ZIP · every dated City record marked on the line
- OPA assessment · 2016$105K 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$105K 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$105K 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$101K 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$106K 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$106K 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$106K 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$154K 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$154K 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$196K 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$196K 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$208K 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 · 2018Deed / sale $134KA 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 ↗
- L&I violation · 2012-11-07CLIP 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 · 2012-11-07HIGH WEEDS-CUTA 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 · 2021-01-25RENTAL LICENSE- ONE & 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 ↗
- Inspection · 2021-01-25L&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 · 2021-05-22EXTERIOR 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 · 2021-05-22L&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 · 2021-02-10L&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 · 2021-05-12L&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 · 2021-06-10L&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 · 2021-02-13JIN SONG ZHENG: 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 · 2026-04-13JIN SONG ZHENG: 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 · 2011-11-04EMANOR & KETTLY THERTULIEN: 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 · 2018-04-29EMANOR & KETTLY THERTULIEN: 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 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 record14 events · exact dates, newest first
- LicenseJIN SONG ZHENG: Rental landlord or residential registration marked inactive
- InspectionL&I investigation
- L&I violationEXTERIOR AREA WEEDS
- InspectionL&I investigation
- InspectionL&I investigation
- LicenseJIN SONG ZHENG: Rental landlord or residential registration initially issued
- InspectionL&I investigation
- L&I violationRENTAL LICENSE- ONE & TWO FAMILY (R3)
- InspectionL&I investigation
- LicenseEMANOR & KETTLY THERTULIEN: Rental landlord or residential registration marked inactive
- Deed / saleDeed / sale $134K
- L&I violationCLIP VIOLATION NOTICE
- L&I violationHIGH WEEDS-CUT
- LicenseEMANOR & KETTLY THERTULIEN: Rental landlord or residential registration initially issued
The short read
History2 L&I violations (2012); recorded transfer $134K (2018); 2 L&I violations (2021); L&I: 3 failed, 2 passed (2021).
A selected summary of the main sequence. The chart above and source ledger below contain every fetched dated row.
Browse 14 dated records
Deeds, permits, inspections, licenses, violations, certifications, and appeals.
Open the source ledger 14 dated rows
- License terminal eventJIN SONG ZHENG: Rental landlord or residential registration marked inactive
License 861489 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- InvestigationL&I investigation
Case CF-2021-042922 · PASSED
The cited inspection visit was marked passed.
- ViolationEXTERIOR AREA WEEDS
Case CF-2021-042922 · Violation VI-2021-031632 · 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-2021-042922 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationL&I investigation
Case CF-2021-006095 · PASSED
The cited inspection visit was marked passed.
- License issue eventJIN SONG ZHENG: Rental landlord or residential registration initially issued
License 861489 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- InvestigationL&I investigation
Case CF-2021-006095 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationRENTAL LICENSE- ONE & TWO FAMILY (R3)
Case CF-2021-006095 · Violation VI-2021-004491 · Code 9-3902 (1) · COMPLIED
Resolution: COMPLIED - LICENSE/CERTIFICATE/REPORT OBTAINED City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationL&I investigation
Case CF-2021-006095 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- License terminal eventEMANOR & KETTLY THERTULIEN: Rental landlord or residential registration marked inactive
License 548151 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- Recorded transfer$134K transfer
2018
- ViolationCLIP VIOLATION NOTICE
Case 358691 · Violation 2634085 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationHIGH WEEDS-CUT
Case 358691 · Violation 2634086 · Code CP-312A · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- License issue eventEMANOR & KETTLY THERTULIEN: Rental landlord or residential registration initially issued
License 548151 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
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: latest deed has shared-name parties; relationship unverified. 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.
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.
2026 taxable assessment $196,400 × 1.3998%. This is an estimate, not a bill or account balance.
OPA also publishes a 2027 assessment of $207,700; it is not the 2026 billed-year value.
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 3510701002026 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
1,684 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
Above averageBelow average
Interior condition
Average
city code 4
Above averageBelow average
Quality grade
C
assessor's grade
ABCDE
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: 611 Mayfair St · 609 Mayfair St
L&I license dates · data through Jul 21, 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 21, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
JIN SONG ZHENGInactive
Rental · Initial issue date Feb 13, 2021 · Terminal license date Apr 13, 2026
EMANOR & KETTLY THERTULIENInactive
Rental · Initial issue date Nov 4, 2011 · Terminal license date Apr 29, 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.
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 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)