251-57 S 17TH ST
OFF BLD COM NO GAR MASON · Philadelphia · 19103
At a glance
251-57 S 17TH ST in Philadelphia, PA is listed on the Philadelphia property roll as “OFF BLD COM NO GAR MASON”, OPA account 883051000. The roll records 120,582 sq ft of building area, 30 floors, a 1931 build year and an assessed value of $14,626,600. 1 active business locations at this address appear in public records.
Public record — 1 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| MTP RX LLC (Medical Tower Pharmacy) | — | Dec 2018 | Philadelphia L&I licence | folio match · high |
Philadelphia assessment roll
Parcel record
| Field | Value |
|---|---|
| OPA account | 883051000 |
| Site address | 251-57 S 17TH ST |
| Land use (DOR) | DB0 — OFF BLD COM NO GAR MASON |
| Building area (actual) | 120,582 sq ft |
| Floors / units / buildings | 30 / — / — |
| Lot size | — |
| Year built | 1931 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $14,626,600 |
Recorded owner (assessment roll)
MEDTOWER LIMITED PARTNERS
Owner mailing address: 100 S BROAD ST, PHILADELPHIA, PA, 19110
9 Philadelphia office properties share this owner mailing address →
Commercial property is usually held one building per entity; a shared mailbox is how the roll reveals a portfolio. It is evidence of common ownership, not proof.
Location
- Address
- 251-57 S 17TH ST
- City
- Philadelphia
- ZIP
- 19103
- Coordinates
- 39.94815, -75.16924
Within ~650 m
Nearby office buildings
- 1500-42 MARKET ST7 tenants
2,215,276 sq ft · 43 fl · 1974
- One Liberty Place4 tenants
1,464,000 sq ft · 61 fl · 1986
- BNY Mellon Center6 tenants
1,449,928 sq ft · 54 fl · 1990
- 1700-40 MARKET ST7 tenants
1,183,616 sq ft · 32 fl · 1969
- 1818-28 MARKET ST3 tenants
1,143,040 sq ft · 40 fl · 1976
- 1400 JOHN F KENNEDY BLVD7 tenants
891,135 sq ft · 2015
How does 251-57 S 17TH ST compare with other Philadelphia office buildings?
At 120,582 sq ft, 251-57 S 17TH ST is about 3 times the size of the average office building on the Philadelphia roll, which comes to 36,284 sq ft across 2,470 buildings.
With 30 floors it is one of 82 office buildings of ten or more floors in the metro.
Its assessed value works out to $121 per square foot of building area, against $163 across all office floor area on the roll.
Does the owner of 251-57 S 17TH ST hold other Philadelphia office property?
9 Philadelphia office properties (9 parcels, 2.5M sq ft) are recorded to 9 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What does “OFF BLD COM NO GAR MASON” mean for this parcel?
The Philadelphia roll classifies OPA account 883051000 as “OFF BLD COM NO GAR MASON” (use code DB0). BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.
Frequently asked questions
Who owns 251-57 S 17TH ST?
The recorded owner on the Philadelphia assessment roll (current) is MEDTOWER LIMITED PARTNERS. Owner mailing address on file: 100 S BROAD ST, PHILADELPHIA, PA, 19110.
What companies have offices at 251-57 S 17TH ST?
1 active business locations at this building appear in Philadelphia public records, including MTP RX LLC (Medical Tower Pharmacy). Public records under-count tenants that don't hold a local receipt or register the address.
How big is 251-57 S 17TH ST?
The Philadelphia roll records 120,582 sq ft of building area, 30 floors, a build year of 1931.
What is the assessed value of 251-57 S 17TH ST?
$14,626,600 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
What is the OPA account for 251-57 S 17TH ST?
OPA account 883051000, site address 251-57 S 17TH ST, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 251-57 S 17TH ST
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Philadelphia — Office of Property Assessment nightly roll (owner and mailing address on every parcel), Department of Records deed transfers with consideration and counterparties, and L&I business licences joined by OPA account. The universal Commercial Activity licence roll publishes no premises addresses, so occupancy shows regulated activities only.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
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Dataset updated . Source: Philadelphia assessment roll, OPA account 883051000.
About this data
Source: Office of Property Assessment nightly roll (Philadelphia), as published October 10, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “251-57 S 17TH ST, Philadelphia, PA (OPA account 883051000)”, https://buildingcensus.com/offices/philly/office-building-b55488a9 (data as of October 10, 2026).