2026 assessment
$1.6M
OPA value, not a listing price
Apartment building report
913-15 S 51st St
Research this property with Analyst →9,150 sqftRM1built 2020
Property at a glanceApartments
51st Street Partners LLC
2027 published assessment
$1.6M
Future roll, not the current tax bill
Location
900 block of S 51st St
ZIP 19143
Neighborhood area
Cedar Park · Kingsessing
Approximate · based on ZIP 19143
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 $1,625,100. It is not yet the billed-year tax basis.
- OPA assessment · 2026$1.6M 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$1.6M 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 ↗
- Teardown · 2020DemolishedThis permit category usually covers partial or complete removal 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 · 2019-10-29AlterationsThis 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 · 2019-12-30Minor DemolitionThis permit category usually covers partial or complete removal 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 · 2020-01-24New 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 · 2020-06-24New 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 · 2020-07-08Rough-InThis 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 · 2020-07-17New 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 · 2020-08-20New 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 · 2020-08-25New 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 · 2020-09-17AlterationsThis 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 · 2020-11-0351st Street Partners LLC: 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 assessmentAssessmentTeardownPermitLicense
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 record11 events · exact dates, newest first
- License51st Street Partners LLC: Rental landlord or residential registration initially issued
- PermitAlterations
- PermitNew Construction or Additions
- PermitNew Construction
- PermitNew Construction
- PermitRough-In
- PermitNew Construction
- PermitNew Construction
- TeardownDemolished
- PermitMinor Demolition
- PermitAlterations
Verify the public record
Property tax
$4,467/year estimated property tax
2026 taxable assessment $319,120 × 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 $1,625,100. It is not the 2026 billed-year value.
Payments, credits, interest, and the current amount due are maintained by the City.
OPA 8810011972026 OPA taxes $319,120 of $1,595,600 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.”
Building report
Apartment building
Apartments, recorded in the City's apartments category. The public record and owner trail follow.
What it is
Apartments
Det W/D Gar 2 Sty Masonry
Owner
51st Street Partners LLC
$ / sq ft
$178
above the $147 median for 2,826 apartments parcels citywide
Licensed units
10
active rental license
Interior area
9,150 sqft
Lot size
4,640 sqft
Built
2020
Zoning
RM1
Recorded owner
Who's behind it
51st Street Partners LLC · corporate / LLC owner
• Tax bills mail to 913-15 S 51st St, Philadelphia PA, 19143
• Holds an active rental license for this address
Block context
900 block of S 51st St. Compare parcels, ownership, and public-record history.
See the whole block →Next door: 911 S 51st St · 909r S 51st 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.
51st Street Partners LLCActive
Rental · Initial issue date Nov 3, 2020 · Filed expiration Nov 2, 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 10 dated rows
- License issue event51st Street Partners LLC: Rental landlord or residential registration initially issued
License 854835 · Active
License event. Registration does not prove present operation or storefront occupancy.
- PermitAlterations
Permit PP-2020-008519 · 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 or Additions
Permit PP-2020-003800 · Completed
Commercial: New Construction 10 family dwelling. All proposed work to be done in accordance with Philadelphia Plumbing Code 2018.
- PermitNew Construction
Permit EP-2020-003761 · Completed
Install 800 amp, 120/240v 1ph main service. Install 11 gang meter module. Install all wiring throughout 10 apartments & house as per 2017 NEC. Install addressable fire alarm system throughout and install low frequency audible devices in sleeping areas as per 2016 NFPA72. Install cable tv wiring
- PermitNew Construction
Permit FP-2020-000690 · Completed
FOR THE INSTALLATION OF A TWO (2) INCH FIRE SERVICE LINE, BACKFLOW PREVENTER FOR AUTOMATIC FIRE SUPPRESSION SYSTEM AS PER NFPA 13. ALL WORK SHALL BE DONE IN ACCORDANCE WITH APPROVED PLANS/HYDRAULIC CALCULATIONS.
- PermitRough-In
Permit EP-2020-003764 · Completed
Rough-In Permit for EP-2020-003761 Install 800 amp, 120/240v 1ph main service. Install 11 gang meter module. Install all wiring throughout 10 apartments & house as per 2014 NEC. Install fire alarm system throughout as per NFPA72. Install cable tv wiring
- PermitNew Construction
Permit MP-2020-000329 · Completed
For the installation of a new HVAC system to include heat pumps, registers, diffusers, and associated duct work throughout a multi-family dwelling as per plans. Separate permits required for electrical and plumbing work.
- PermitNew Construction
Permit 1035679 · Completed
FOR THE ERECTION OF A THREE (3) STORY STRUCTURE WITH ROOF DECK AND ROOF DECK ACCESS STRUCTURE; FOR USE AS A TEN (10 ) FAMILY DWELLING. ENTIRE BUILDING TO BE SPRINKLERED PER NFPA 13. 1ST FLOOR DWELLING UNITS ARE REQUIRED TO BE TYPE B DWELLING UNITS. SEPARATE PERMIT REQUIRED FOR MEP AND FIRE SUPPRESSION WORK.
- PermitMinor Demolition
Permit 1030955 · Completed
COMPLETE DEMOLITION OF AN EXISTING DETACHED (VACANT LOT ON ONE SIDE, SIDE YARD ON OTHER SIDE) TWO-STORY, MASONRY AND WOOD RESIDENTIAL BUILDING BY HAND METHODS. ALL PERMITTED DEMOLITION ACTIVITY TO BE IN ACCORDANCE WITH APPROVED SITE SAFETY DEMOLITION PLAN & SUCH PLAN TO BE MAINTAINED ON SITE AT ALL TIMES IN ACCORDANCE WITH PHILADELPHIA ADMINISTRATIVE CODE. COMPLETE SIDEWALK CLOSURE REQUIRED IN ACCORDANCE WITH SECTION 3306 OF THE IBC. SEPARATE STREET CLOSURE PERMIT REQUIRED PRIOR TO START OF WORK. ANY DEVIATION WILL REQUIRE AN AMENDED BUILDING PERMIT.
- PermitAlterations
Permit 1023325 · Completed
SEAL LATERAL PA20193012711 REMOVE HOUSE TRAP AND HERMETICALLY SEALING THE LATERAL BY A CAP OR PLUG PER SECTION P-606.1 OF THE PHILADELPHIA PLUMBING CODE 2004 - "SELF-CERTIFICATION'S ARE NO LONGER PERMITTED" - "ALL EXCAVATIONS AND PLUMBING TRENCHES IN EXCESS OF 5 FEET IN DEPTH MUST HAVE APPROVED SHORING IN PLACE AT THE TIME OF INSPECTION"
Unavailable when this report assembled: certifications. Unavailable does not mean no record.
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, 7:16 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: unavailable. “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)