2026 assessment
$2.0M
OPA value, not a listing price
House report
535 W Mermaid Ln
Research this property with Analyst →7 bd5 ba6,254 sqftRSD1built 1920
Property at a glanceHouse
Owner-occupancy signal
ZIP 19118 area
Chestnut Hill
500 block of W Mermaid Ln
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$774K 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$774K 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$774K 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$1.2M 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$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 ↗
- OPA assessment · 2021$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 ↗
- OPA assessment · 2022$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 ↗
- OPA assessment · 2023$1.8M 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$1.8M 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$2.0M 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$2.0M 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$2.4M 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 · 2010Deed / sale $625KA 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 · 2010-09-15ElectricalThis 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 · 2010-12-15ElectricalThis 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 · 2011-01-28Major alterationA broad legacy permit work category for a substantial building alteration. It can include changed layouts, partitions, fixtures, finishes, structural work, or occupancy-related work, but only the approved scope and plans say what this permit actually authorized; separate trade permits may be required.What Philadelphia building permits can cover ↗
- Permit · 2011-02-08MechanicalThis 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 · 2011-02-14PlumbingThis 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 ↗
- Permit · 2021-08-25Lot Line RelocationThis 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 ↗
- Permit · 2023-02-10Lot Line RelocationThis 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 ↗
- Permit · 2025-02-17Roof Covering ReplacementThis 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 · 2011-02-04PERMP- ALTER/REPAIR/REPL PLUMBA 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 · 2011-02-04PP_PLUMBA 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 · 2011-02-09PP_PLUMBA 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 · 2011-02-16PP_PLUMBA 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 ↗
Property assessmentBlock median & rangeZIP 19118 (Chestnut Hill) medianAssessmentDeed / saleL&I violationPermitInspection
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 record13 events · exact dates, newest first
- PermitRoof Covering Replacement
- PermitLot Line Relocation
- PermitLot Line Relocation
- InspectionPP_PLUMB
- PermitPlumbing
- InspectionPP_PLUMB
- PermitMechanical
- L&I violationPERMP- ALTER/REPAIR/REPL PLUMB
- InspectionPP_PLUMB
- PermitMajor alteration
- PermitElectrical
- PermitElectrical
- Deed / saleDeed / sale $625K
Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$26,176/year estimated property tax
2026 taxable assessment $1,870,000 × 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 $2,403,700. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 0921440002026 OPA removes $100,000 from the taxable assessment through the owner-occupant exemption.
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
7
Bathrooms
5
Interior
6,254 sqft
livable area
Lot
27,650 sqft
Basement
Partial, unfinished
city code G
Heat
Hot water / radiators
city code B
Central air
Yes
Garage
2 spaces
Exterior condition
Above average
city code 3
Above averageBelow average
Interior condition
Above average
city code 3
Above averageBelow average
Quality grade
A+
assessor's grade
ABCDE
Zoning
RSD1
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
500 block of W Mermaid Ln. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 531 W Mermaid Ln · 525 W Mermaid Ln
L&I licenses checked through Jul 28, 2026
No business or residential license records
No business license or residential registration matched this OPA parcel in the latest City data.
Open every source row 13 dated rows
- PermitRoof Covering Replacement
Permit GM-2025-001354 · Completed
For minor construction work at the subject property in accordance with all applicable provisions of the Philadelphia Code, all references codes and standards, and the attached EZ Standard, where included. Deviation from this standard shall result in permit revocation. A separate permit from the Philadelphia Department of Streets is required for any sidewalk and street closures. All means of pedestrian protection required at the site in accordance with the Philadelphia Building Code Chapter 33 shall be in place prior to start of work.
- PermitLot Line Relocation
Permit ZP-2023-001104 · Issued
FOR THE RELOCATION OF LOT LINES TO ALLOCATE A PORTION OF AN EXISTING LOT (535 W MERMAID LN) TO ANOTHER LOT (545 W MERMAID LN) IN ONE LOCATION AND A PORTION OF AN EXISTING LOT (545 W MERMAID LN) TO ANOTHER LOT (535 W MERMAID LN) IN ANOTHER LOCATION. SIZE AND LOCATIONS AS SHOWN ON PLANS.
- PermitLot Line Relocation
Permit ZP-2021-008473 · Expired
FOR THE RELOCATION OF LOT LINES TO ALLOCATE A PORTION OF AN EXISTING LOT (535 W MERMAID LN) TO ANOTHER LOT (545 W MERMAID LN) IN ONE LOCATION AND A PORTION OF AN EXISTING LOT (545 W MERMAID LN) TO ANOTHER LOT (535 W MERMAID LN) IN ANOTHER LOCATION. SIZE AND LOCATIONS AS SHOWN ON PLANS.
- InvestigationPP_PLUMB
Case 265499 · PASSED
The cited inspection visit was marked passed.
- PermitPlumbing
Permit 324765 · COMPLETED
INSTALL NEW PEX WATER, NEW PVC DRAIN IN MASTER BATHROOM TO NEW SHOWER. (2)VANITIES, 2" RELIEF VENT,BATHTUB AND TOILET. 2ND BATHROOM: CHANGE PIPING TO SHOWER, TOILET, BASIN. KITCHEN: TYING ONTO EXISTING PLUMBING AND NEW KITCHEN SINK.
- InvestigationPP_PLUMB
Case 265499 · PASSED
The cited inspection visit was marked passed.
- PermitMechanical
Permit 323951 · COMPLETED
INSTALL 2 TRANE GAS FURNACES & 2 A/C UNITS(SFD)SEE HANSEN CASE #265499
- ViolationPERMP- ALTER/REPAIR/REPL PLUMB
Case 265499 · Violation 1971858 · Code A-301.1/55 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationPP_PLUMB
Case 265499 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitMajor alteration
Permit 322530 · COMPLETED
INTERIOR RENOVATIONS TO NON LOADS BEARING PARTIONS, INSTALLATION OF INSULLATION AND NEW GWB THROUGHOUT. ELECTRICAL, PLUMBING, AND MECHANICAL WORK IS NOT A PART OF THIS PERMIT.
- PermitElectrical
Permit 316555 · COMPLETED
REWIRE THE RIGHT SIDE OF SINGLE FAMILY DWELLING AS PER 2008 NEC (NORTH DISTRICT)
- PermitElectrical
Permit 301231 · COMPLETED
REPLACE ELECTRICAL SERVICE 200 AMP INSTALL 2 NEW SUB PANELS AND REWIRE L/S OF THE BLDG PER2008 NEC CODE(NORTH DIS)
- Recorded transfer$625K transfer
2010
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 28, 2026, 10:14 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)