House report
914 Mountain St
4 bd3 ba2 stories1,112 sqftRSA5built 1960
Owner-occupancy signal
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$202K 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$202K 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$202K 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$207K 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$225K 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$225K 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$225K 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$317K 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$317K 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$396K 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$396K 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$411K 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 $220KA 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 · 2018Deed / sale $279KA 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 · 2022Deed / sale $720KA 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 · 2018-05-15Major 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 · 2019-09-04ZoningThis 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 · 2019-09-04Addition 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 ↗
- Permit · 2020-10-02Amend for conversionThis 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 · 2021-07-08Addition 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 · 2021-07-19AlterationsThis 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 · 2021-07-30New ConstructionThis 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 ↗
- Appeal · 2019-05-08Zoning board appealA challenge or request reviewed through a City appeals process. Filing an appeal does not show who prevailed; read the decision, conditions, and related permit or violation.How Philadelphia L&I appeals work ↗
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.
- Deed / saleDeed / sale $720K
- PermitNew Construction
- PermitAlterations
- PermitAddition and/or Alteration
- PermitAmend for conversion
- PermitZoning
- PermitAddition and/or Alteration
- AppealZoning board appeal
- PermitMajor alteration
- Deed / saleDeed / sale $220K
- Deed / saleDeed / sale $279K
Flags: 1 zoning/board appeal on record. Informational only. Not investment advice or a consumer report (FCRA).
Verify the public record
Property tax
$4,136/year estimated property tax
2026 taxable assessment $295,500 × 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 $410,700. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 0123127002026 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.
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
900 block of Mountain St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 912 Mountain St · 916 Mountain 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.
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 11 dated rows
- Recorded transfer$720K transfer
2022
- PermitNew Construction
Permit MP-2021-004457 · Expired
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. EACH HVAC UNIT TO BE SELF-CONTAINED WITHIN EACH DWELLING UNIT. NO PENETRATIONS OF RATED ASSEMBLIES. (installation of a forced air Gaz furnace high efficiency, and a split system air conditioner with new ductwork connecting 10 registers an diffusers).
- PermitAlterations
Permit PP-2021-012427 · Expired
install new interior plumbing for 3 bathrooms 1 kitchen 1 laundry
- PermitAddition and/or Alteration
Permit EP-2021-006606 · Completed
New wiring for a single home Run power for all the bedrooms lights outlets Run power for all the smoke detectors Run power for all the appliances New electric panel and service replace 100 amp 120/240 volt As per 2014 NEC
- PermitAmend for conversion
Permit 1055303 · Expired
AMENDMENT TO BUILDING PERMIT #926070 PER DRAWINGS. LAYOUT CHANGES PER CHANGES Underpinning indicated on plan as part of scope of work
- PermitZoning
Permit 926069 · COMPLETED
PROPOSED ALTERATION TO EXISTING SINGLE FAMILY DWELLING TO INCLUDE ROOF DECK PER DRAWINGS.
- PermitAddition and/or Alteration
Permit 926070 · Expired
ALTERATION TO EXISTING SINGLE FAMILY ROW HOME, INCLUDING NEW ROOF DECK PER DRAWINGS. INTERIOR ALTERATIONS PER DRAWINGS.
- AppealZoning board appeal
Appeal 36553 · OPEN · Granted with conditions
Related permit 926069 · PERMIT FOR THE LEGALIZATION OF A TWO-STORY ADDITION, AND THE ERECTION OF A ONE-STORY ADDITION AND A ROOFTOP DECK ACCESSED BY THE THIRD FLOOR, AND A ROOFTOP DECK ACCESSED BY A PILOT HOUSE, TO CREATE A THREE-STORY ATTACHED STRUCTURE.
- PermitMajor alteration
Permit 876937 · EXPIRED
INTERIOR DEMO OF NON-LOAD BEARING WALLS ONLY, NO STRUCTURAL WORK ON THIS PERMIT,INTERIOR ALTERATIONS THROUGHOUT, TO INCLUDE DRYWALL AND SHEETROCK, REMODEL BATHROOM AND KITCHEN, NEW WINDOWS AND DOORS IN EXISTING OPENING. APPLICANT AGREES TO LIMIT THE CONSTRUCTION TO COMPLY WITH EZ PERMIT STANDARD FOR INTERIOR ALTERATIONS, DATED JANUARY 2011. DEVIATION FROM THE STANDARD WILL RESULT IN REVOCATION OF THIS PERMIT AND IMPOSITION OF FURTHER PENALTIES. NOTE: CONTRACTOR IS LISTED AS A "SOLE PROPRIETOR" AND HAS NO EMPLOYEES AND/OR WORKERS COMPENSATION INSURANCE - ALL SUBCONTRACTORS REQUIRE SEPARATE LICENSES AND INSURANCE SEPARATE PERMITS REQUIRED FOR PLUMBING, ELECTRICAL AND MECHANICAL WORK. NO OTHER WORK ALLOWED UNDER THIS PERMIT.
- Recorded transfer$220K transfer
2018
- Recorded transfer$279K transfer
2018
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 27, 2026, 9:44 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: 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)
