2026 assessment
$556K
OPA value, not a listing price
Property report
1509 S 25th St
4 bd2,583 sqftICMXbuilt 2025
Property at a glanceMulti-family
Knossos Development LLC
2027 published assessment
$556K
Future roll, not the current tax bill
Location
1500 block of S 25th St
ZIP 19146
Neighborhood area
Graduate Hospital · Point Breeze
Approximate · based on ZIP 19146
Assessment and City record timeline
The line tracks this property’s published City assessment. Markers show deeds, permits, inspections, licenses, violations, certifications, and appeals on their recorded dates. Select one to read the filing.
Assessments are tax-roll values, not sale prices or appraisals. OPA has published a 2027 assessment of $555,500. It is not yet the billed-year tax basis.
- OPA assessment · 2025$556K 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$556K 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$556K 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 ↗
- Permit · 2021-03-09New 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 ↗
- Permit · 2021-08-09New 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 ↗
- Permit · 2023-04-18New 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 · 2023-06-15New 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 ↗
- Permit · 2023-07-10New 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 · 2023-07-20New 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 ↗
- Permit · 2024-02-21New 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 ↗
- License · 2026-02-05Knossos Development: 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 ↗
Property assessmentAssessmentPermitLicense
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 record8 events · exact dates, newest first
- LicenseKnossos Development: Rental landlord or residential registration initially issued
- PermitNew Construction or Additions
- PermitNew Construction
- PermitNew Construction or Additions
- PermitNew Construction
- PermitNew Construction or Additions
- PermitNew Construction
- PermitNew Construction
Verify the public record
Property tax
$1,555/year estimated property tax
2026 taxable assessment $111,100 × 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 $555,500. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 3640000622026 OPA taxes $111,100 of $555,500 assessed. The assessment fields alone do not identify a program, approval date, expiration, or buyer eligibility.
See the assessment math →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.”
Property report
Commercial property
Multi-family, recorded in the City's multi-family category. The public record and owner trail follow.
What it is
Multi-family
Priv Gar 1 Sty Masonry
Owner
Knossos Development LLC
$ / sq ft
$215
assessed value ÷ interior sqft
Licensed units
2
active rental license
Interior area
2,583 sqft
Lot size
762 sqft
Built
2025
Zoning
ICMX
Recorded owner
Who's behind it
Knossos Development LLC · corporate / LLC owner
• Owns 22 properties across Philadelphia under this name, assessed at $11M combined
• Holds an active rental license for this address
Block context
1500 block of S 25th St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 1509 S 25th St · 1509 S 25th St
L&I license dates · data through Jul 23, 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 23, 2026.
Landlord and residential filings
These are property registrations or landlord filings, not businesses operating at this address.
Knossos DevelopmentActive
Rental · Initial issue date Feb 5, 2026 · Filed expiration Feb 4, 2027
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 8 dated rows
- License issue eventKnossos Development: Rental landlord or residential registration initially issued
License 0998955 · Active
License event. Registration does not prove present operation or storefront occupancy.
- PermitNew Construction or Additions
Permit PP-2023-009427 · Completed
INSTALL 1" WDP
- PermitNew Construction
Permit MP-2021-000305 · Completed
FOR THE INSTALLATION OF MECHANICAL SYSTEMS IN COMPLIANCE WITH EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES.
- PermitNew Construction or Additions
Permit PP-2023-009404 · 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.
- PermitNew Construction
Permit EP-2023-005714 · Completed
INSTALL 200 AMP ELECTRICAL SERVICE FOR TWO FAMILY DWELLING WITH 125 AMP SUBPANEL FOR EACH UNIT. WIRING THROUGHOUT EACH UNIT WITH RECEPTACLES, SWITCHES AND LIGHTING. INSTALL 120 VOLT HARDWIRE SMOKE DETECTORSS ACCORDING TO THE 2017 NEC.
- PermitNew Construction or Additions
Permit PP-2021-000838 · Completed
FOR THE INSTALLATION OF HOUSE DRAINS, CURB TRAPS, AND FRESH AIR INLETS IN ACCORDANCE WITH 2018 PPC.
- PermitNew Construction
Permit FP-2021-001583 · Completed
INSTALL NEW FIRE SUPPRESSION SYSTEM COMPLYING WITH NFPA 13R THROUGHOUT UNIT 12 WITH 2" PRIVATE SITE FEED COMPLYING WITH THE PHILADELPHIA PLUMBING CODE FROM RISER LOCATED IN UNIT 1 AS PER APPROVED PLANS. SEE A/P NO. FP-2021-001572 FOR RISER, BACKFLOW AND PUMP INSTALLATION. ALL WORK SHALL BE PERFORMED BY A FIRE SUPPRESSION CONTRACTOR LICENSED BY THE CITY OF PHILADELPHIA.
- PermitNew Construction
Permit RP-2020-013176 · Completed
FOR THE ERECTION OF A FOUR (4) STORY ATTACHED STRUCTURE AS PER APPROVED PLANS. FOR USE AS TWO FAMILY DWELLING. STRUCTURE TO BE FULLY SPRINKLERED IN ACCORDANCE WITH NFPA 13R MINIMUM. **SEPARATE PERMITS REQUIRED FOR MEP AND FIRE SUPPRESSION WORK.** **2018 IBC** AMENDMENT 4/26/24 TO REFLECT FLOOR PLAN CHANGES, EGRESS WELL CHANGE, AND OTHER MODIFICATIONS AT BUILDING 12.
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 23, 2026, 8:08 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)