520-26 S 19TH ST
OFF BLD N/PKG N/COM MASON · Philadelphia · 19146
At a glance
520-26 S 19TH ST in Philadelphia, PA is listed on the Philadelphia property roll as “OFF BLD N/PKG N/COM MASON”, OPA account 883052825. The roll records 12,960 sq ft of building area, 2 floors, a 1987 build year and an assessed value of $1,966,200.
Public record — 0 matched business locations
Tenants & business locations
No active business locations at this address appear in the public records ingested so far. That is a statement about the records, not the building: tenants without a county business-tax receipt or a Florida registration at this address are invisible to public data.
Philadelphia assessment roll
Parcel record
| Field | Value |
|---|---|
| OPA account | 883052825 |
| Site address | 520-26 S 19TH ST |
| Land use (DOR) | DD0 — OFF BLD N/PKG N/COM MASON |
| Building area (actual) | 12,960 sq ft |
| Floors / units / buildings | 2 / — / — |
| Lot size | — |
| Year built | 1987 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $1,966,200 |
Recorded owner (assessment roll)
520 S 19TH STREET LLC
Owner mailing address: 520-26 S 19TH ST, PHILADELPHIA, PA, 19146
Location
- Address
- 520-26 S 19TH ST
- City
- Philadelphia
- ZIP
- 19146
- Coordinates
- 39.94505, -75.17359
Within ~650 m
Nearby office buildings
- 1845 WALNUT ST5 tenants
560,000 sq ft · 20 fl · 1968
- 1608-14 WALNUT ST0 tenants
205,334 sq ft · 19 fl · 1925
- 1601-05 WALNUT ST1 tenants
128,115 sq ft · 15 fl · 1925
- 251-57 S 17TH ST1 tenants
120,582 sq ft · 30 fl · 1931
- 1624-28 LOCUST ST1 tenants
49,000 sq ft · 1940
- 1740 SOUTH ST2 tenants
45,335 sq ft · 5 fl · 1986
How does 520-26 S 19TH ST compare with other Philadelphia office buildings?
At 12,960 sq ft, 520-26 S 19TH ST is about 64% smaller than the average office building on the Philadelphia roll, which comes to 36,284 sq ft across 2,470 buildings.
Its assessed value works out to $152 per square foot of building area, against $163 across all office floor area on the roll.
What does “OFF BLD N/PKG N/COM MASON” mean for this parcel?
The Philadelphia roll classifies OPA account 883052825 as “OFF BLD N/PKG N/COM MASON” (use code DD0). 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 520-26 S 19TH ST?
The recorded owner on the Philadelphia assessment roll (current) is 520 S 19TH STREET LLC. Owner mailing address on file: 520-26 S 19TH ST, PHILADELPHIA, PA, 19146.
What companies have offices at 520-26 S 19TH ST?
No business locations at this building appear in the public records ingested so far — no licence, tax or registry record currently lists this address; that is a gap in the record, not proof the building is empty.
How big is 520-26 S 19TH ST?
The Philadelphia roll records 12,960 sq ft of building area, 2 floors, a build year of 1987.
What is the assessed value of 520-26 S 19TH ST?
$1,966,200 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
What is the OPA account for 520-26 S 19TH ST?
OPA account 883052825, site address 520-26 S 19TH ST, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 520-26 S 19TH 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 883052825.
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, “520-26 S 19TH ST, Philadelphia, PA (OPA account 883052825)”, https://buildingcensus.com/offices/philly/office-building-00b3370c (data as of October 10, 2026).