2026 assessment
$294K
OPA value, not a listing price
House report
848 Mercer St
Research this property with Analyst →3 bd1 ba2 stories920 sqftRSA5built 1925
Property at a glanceHouse
Owner-occupancy signal
ZIP 19125 area
Fishtown · East Kensington
800 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$158K 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$158K 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$158K 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$190K 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$205K 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$205K 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$205K 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$235K 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$235K 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$294K 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$294K 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$288K 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 · 2004Deed / sale $55KA 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 · 2004Deed / sale $123KA 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 · 2021Deed / sale $288KA 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 · 2021-03-04Addition 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 ↗
- License · 2004-05-27WILLIAM ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,MCDOWELL (MONICA MCDOWELL): 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 · 2012-12-22WILLIAM ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,MCDOWELL (MONICA MCDOWELL): 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 19125 (Fishtown · East Kensington) medianAssessmentDeed / salePermitLicense
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 record6 events · exact dates, newest first
- PermitAddition and/or Alteration
- Deed / saleDeed / sale $288K
- LicenseWILLIAM ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,MCDOWELL (MONICA MCDOWELL): Vacant Residential Property / Lot landlord or residential registration marked inactive
- LicenseWILLIAM ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,MCDOWELL (MONICA MCDOWELL): Vacant Residential Property / Lot landlord or residential registration initially issued
- Deed / saleDeed / sale $55K
- Deed / saleDeed / sale $123K
Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$4,110/year estimated property tax
2026 taxable assessment $293,600 × 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 $287,900. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 1814046002026 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
920 sqft
livable area
Lot
672 sqft
Basement
Full, unfinished
city code C
Heat
Forced hot air
city code A
Central air
Yes
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
800 block of Mercer St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 846 Mercer St · 850 Mercer St
L&I license dates · data through Jul 25, 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 25, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
WILLIAM ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,MCDOWELL (MONICA MCDOWELL)Inactive
Vacant Residential Property / Lot · Initial issue date May 27, 2004 · Terminal license date Dec 22, 2012
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 6 dated rows
- PermitAddition and/or Alteration
Permit EP-2021-002052 · Expired
3 - 15 Amp AFCI Circuit Includes and arc fault protected branch circuit to power devices, lights, and switches 5 - 20 Amp AFCI Circuit Includes and arc fault protected branch circuit to power devices, lights, and switches 5 - 15 amp Duplex Includes the Duplex style outlet, wiring, box, and cover 1 - 20 amp Duplex Includes the Duplex style outlet, wiring, box, and cover. 4 - 20 amp GFCI Includes the GFCI outlet NEMA 5-15R, wiring, box, and cover plate. 3 - Light Switch ( One Location) Includes a toggle switch, wiring, box, and cover plate. 2 - 3way Light Switch (Two Location) Includes a 3way toggle switch, wiring, box, and cover plate 2 - Light Fixture (Standard Weight) Includes the wiring, a ceiling fan rated box, and the installation 3 - Lamp Holder Includes the wiring, electrical box, and the installation of a provided utility lamp holder fixture and lamp. 1 - Smoke detector Includes the wiring, electrical box, and the installation of a provided smoke detector 4 - 15 amp Eaton BR Breaker replaced as part of a rebuild 1 - 20 amp Eaton BR Breaker replaced as part of a rebuild 2 - Two pole 30 amp Eaton BR Breaker replaced as part of a rebuild Fish Only As per 2014 nec
- Recorded transfer$288K transfer
2021
- License terminal eventWILLIAM ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,MCDOWELL (MONICA MCDOWELL): Vacant Residential Property / Lot landlord or residential registration marked inactive
License 276813 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- License issue eventWILLIAM ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,MCDOWELL (MONICA MCDOWELL): Vacant Residential Property / Lot landlord or residential registration initially issued
License 276813 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
- Recorded transfer$55K transfer
2004
- Recorded transfer$123K transfer
2004
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 25, 2026, 11:01 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)