2026 assessment
$109K
OPA value, not a listing price
House report
3551 Mercer St
Research this property with Analyst →3 bd2 ba2 stories975 sqftRSA5built 1910
Property at a glanceHouse
Owner-occupancy signal
ZIP 19134 area
Port Richmond · Kensington
3500 block of Mercer St
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$110K 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$110K 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$110K 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$121K 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$130K 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$130K 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$130K 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$90K 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$90K 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$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 · 2026$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 · 2027$270K 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 · 2021Deed / sale $90KA 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 · 2023Deed / sale $325KA 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 · 2019-02-06AlterationThis 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 · 2021-10-21AlterationsThis 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 · 2021-10-27Interior Non-Load-Bearing Wall Demo.This 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 · 2021-12-20New construction, addition, GFA changeThis 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 · 2021-12-26Addition and/or AlterationThis 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 · 2022-04-12Addition and/or AlterationsThis 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 · 2022-04-28New Construction or AdditionsThis 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 · 2022-05-04Addition and/or AlterationThis 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 · 2009-07-31ANIMAL DROPPINGSA 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 · 2009-07-31CLIP 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 · 2010-05-26ANIMAL DROPPINGSA 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 · 2010-05-26CLIP 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 · 2010-09-16HIGH 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 · 2010-09-16CLIP 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 · 2010-09-16ANIMAL DROPPINGSA 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 · 2011-06-06ANIMAL DROPPINGSA 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 · 2011-06-06HIGH 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 · 2011-06-06CLIP 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 · 2011-06-06RUBBISH/GARBAGE EXTERIOR-OWNERA 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 · 2012-05-02ANIMAL DROPPINGSA 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 · 2012-05-02CLIP 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 · 2020-11-17VACANT STRUCTURE LICENSEA 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 · 2020-11-17VACANT STRUCTURE & LANDA 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 · 2020-11-17L&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 · 2020-12-25L&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 ↗
- Inspection · 2021-03-10L&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 · 2021-10-133551 Mercer street LLC: Vacant Residential Property / Lot 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 · 2022-12-113551 Mercer street LLC: Vacant Residential Property / Lot 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 19134 (Port Richmond · 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 record30 events · exact dates, newest first
- Deed / saleDeed / sale $325K
- License3551 Mercer street LLC: Vacant Residential Property / Lot landlord or residential registration marked inactive
- PermitAddition and/or Alteration
- PermitNew Construction or Additions
- PermitAddition and/or Alterations
- PermitAddition and/or Alteration
- PermitNew construction, addition, GFA change
- PermitInterior Non-Load-Bearing Wall Demo.
- PermitAlterations
- License3551 Mercer street LLC: Vacant Residential Property / Lot landlord or residential registration initially issued
- InspectionL&I investigation
- Deed / saleDeed / sale $90K
- InspectionL&I investigation
- L&I violationVACANT STRUCTURE LICENSE
- L&I violationVACANT STRUCTURE & LAND
- InspectionL&I investigation
- PermitAlteration
- L&I violationANIMAL DROPPINGS
- L&I violationCLIP VIOLATION NOTICE
- L&I violationANIMAL DROPPINGS
- L&I violationHIGH WEEDS-CUT
- L&I violationCLIP VIOLATION NOTICE
- L&I violationRUBBISH/GARBAGE EXTERIOR-OWNER
- L&I violationHIGH WEEDS-CUT
- L&I violationCLIP VIOLATION NOTICE
- L&I violationANIMAL DROPPINGS
- L&I violationANIMAL DROPPINGS
- L&I violationCLIP VIOLATION NOTICE
- L&I violationANIMAL DROPPINGS
- L&I violationCLIP VIOLATION NOTICE
Flags: historical tax ledger through 2016 recorded $33K with a lien entry. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$1,529/year estimated property tax
2026 taxable assessment $109,200 × 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 $269,500. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 4512643002026 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 $33,243.70 and a lien entry. It is shown as historical context only.
1998$707.23 total · $0.00 principal · $300.78 interest · $15.19 penalty1999$1,511.61 total · $291.69 principal · $1,062.29 interest · $50.67 penalty2000$1,617.37 total · $596.44 principal · $867.82 interest · $41.76 penalty2001$1,889.41 total · $723.80 principal · $987.99 interest · $50.67 penalty2002$1,941.29 total · $772.46 principal · $984.88 interest · $54.07 penalty2003$2,238.35 total · $927.56 principal · $1,099.16 interest · $64.93 penalty2004$2,149.86 total · $927.56 principal · $1,015.68 interest · $64.93 penalty2005$2,061.37 total · $927.56 principal · $932.20 interest · $64.93 penalty2006$1,972.88 total · $927.56 principal · $848.72 interest · $64.93 penalty2007$1,884.39 total · $927.56 principal · $765.24 interest · $64.93 penalty2008$1,929.72 total · $997.50 principal · $733.16 interest · $69.83 penalty2009$1,834.56 total · $997.50 principal · $643.39 interest · $69.83 penalty2010$1,739.40 total · $997.50 principal · $553.61 interest · $69.83 penalty2011$1,804.89 total · $1,096.24 principal · $509.75 interest · $76.74 penalty2012$1,765.01 total · $1,138.48 principal · $426.93 interest · $79.69 penalty2013$1,715.16 total · $1,179.39 principal · $336.13 interest · $82.56 penalty2014$1,753.23 total · $1,238.96 principal · $241.60 interest · $86.73 penalty2015$1,229.85 total · $858.96 principal · $110.14 interest · $82.93 penalty2016$1,498.12 total · $1,294.26 principal · $19.42 interest · $12.94 penalty
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
2
Stories
2
Interior
975 sqft
livable area
Lot
900 sqft
Basement
Full, finished
city code A
Heat
Forced hot air
city code A
Central air
Yes
Exterior condition
New / rehabbed
city code 2
New / rehabbed
Interior condition
New / rehabbed
city code 2
New / rehabbed
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
3500 block of Mercer St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 3549 Mercer St · 3553 Mercer St
L&I license dates · data through Jul 30, 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 30, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
3551 Mercer street LLCInactive
Vacant Residential Property / Lot · Initial issue date Oct 13, 2021 · Terminal license date Dec 11, 2022
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 30 dated rows
- Recorded transfer$325K transfer
2023
- License terminal event3551 Mercer street LLC: Vacant Residential Property / Lot landlord or residential registration marked inactive
License 879368 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- PermitAddition and/or Alteration
Permit EP-2022-003658 · Completed
Rewire of an existing home as per 2014 nec.
- PermitNew Construction or Additions
Permit PP-2022-005675 · Completed
Replumbing of a existing shell and new addition AS PER PPC 2018
- PermitAddition and/or Alterations
Permit MP-2022-002114 · Completed
EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES For the installation of New Ductwork, Registers/Grilles/Diffusers, and Warm-Air Appliances as per attached standards. Deviations from these standards require submission of construction and site plans. Replacing existing unit with new HVAC Unit. 3 ton unit with 16 seer condenser located on the roof of the building, in same location, with same size and weight as existing unit. 13 new registers will be connected to the unit.
- PermitAddition and/or Alteration
Permit RP-2021-020119 · Completed
FOR THE CONSTRUCTION OF A REAR ADDITION TO AN EXISTING ATTACHED STRUCTURE AS PER APPROVED PLAN; FOR USE AS SINGLE-FAMILY HOUSEHOLD LIVING. *SEPARATE PERMITS REQUIRED FOR ELECTRICAL, PLUMBING, AND MECHANICAL WORK* **UNDERPINNING IS NOT PART OF THIS PERMIT** *FOR AN AMENDMENT FOR THE ADDITION OF COORDINATION NOTES OF THE FOOTING AND MASONRY FOUNDATION WALLS*
- PermitNew construction, addition, GFA change
Permit ZP-2021-015863 · Completed
FOR THE ERECTION OF A REAR ADDITION TO AN EXISTING ATTACHED BUILDING (SIZE AND LOCATION AS SHOWN ON PLANS).
- PermitInterior Non-Load-Bearing Wall Demo.
Permit GM-2021-011984 · Expired
Clean out Single Family Residential Property
- PermitAlterations
Permit PP-2021-019434 · Expired
Install curb trap FAI and main house drain
- License issue event3551 Mercer street LLC: Vacant Residential Property / Lot landlord or residential registration initially issued
License 879368 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- InvestigationL&I investigation
Case CF-2020-081068 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- Recorded transfer$90K transfer
2021
- InvestigationL&I investigation
Case CF-2020-081068 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- ViolationVACANT STRUCTURE LICENSE
Case CF-2020-081068 · Violation VI-2020-048370 · Code 9-3905 · COMPLIED
Resolution: COMPLIED - OWNER REPAIR City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVACANT STRUCTURE & LAND
Case CF-2020-081068 · Violation VI-2020-048381 · Code PM15-301 · 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-2020-081068 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- PermitAlteration
Permit 946835 · COMPLETED
REMOVE AND INSTALL SBS MODIFIED ROOFING SYSTEM. (SFD)
- ViolationANIMAL DROPPINGS
Case 326239 · Violation 2429067 · Code CP-311 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 326239 · Violation 2429066 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationANIMAL DROPPINGS
Case 280553 · Violation 2097867 · Code CP-311 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationHIGH WEEDS-CUT
Case 280553 · Violation 2097868 · Code CP-312A · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 280553 · Violation 2097865 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationRUBBISH/GARBAGE EXTERIOR-OWNER
Case 280553 · Violation 2097866 · Code CP-305 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationHIGH WEEDS-CUT
Case 251692 · Violation 1820653 · Code CP-312A · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 251692 · Violation 1820651 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationANIMAL DROPPINGS
Case 251692 · Violation 1820652 · Code CP-311 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationANIMAL DROPPINGS
Case 236865 · Violation 1697891 · Code CP-311 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 236865 · Violation 1697890 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationANIMAL DROPPINGS
Case 208908 · Violation 1411384 · Code CP-311 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationCLIP VIOLATION NOTICE
Case 208908 · Violation 1411383 · Code CP-01 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
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 31, 2026, 4:55 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)