3550 G ST
OFF BLD N/PKG N/COM MASON · Philadelphia · 19134
At a glance
3550 G ST in Philadelphia, PA is listed on the Philadelphia property roll as “OFF BLD N/PKG N/COM MASON”, OPA account 883362700. The roll records 9,112 sq ft of building area, a 1969 build year and an assessed value of $736,200. 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 |
|---|---|---|---|---|
| M J ASSOCIATES INC | — | Jun 2005 | Philadelphia L&I licence | folio match · high |
Philadelphia assessment roll
Parcel record
| Field | Value |
|---|---|
| OPA account | 883362700 |
| Site address | 3550 G ST |
| Land use (DOR) | DD0 — OFF BLD N/PKG N/COM MASON |
| Building area (actual) | 9,112 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | — |
| Year built | 1969 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $736,200 |
Recorded owner (assessment roll)
JRM ASSOCIATES
Owner mailing address: 3550 G ST, PHILADELPHIA, PA, 19134
Location
- Address
- 3550 G ST
- City
- Philadelphia
- ZIP
- 19134
- Coordinates
- 40.00268, -75.11441
Within ~650 m
Nearby office buildings
- 861 E ALLEGHENY AVE2 tenants
27,060 sq ft · 3 fl · 1925
- 3360-70 KENSINGTON AVE0 tenants
9,960 sq ft · 2 fl · 1915
How does 3550 G ST compare with other Philadelphia office buildings?
At 9,112 sq ft, 3550 G ST is about 75% 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 $81 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 883362700 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 3550 G ST?
The recorded owner on the Philadelphia assessment roll (current) is JRM ASSOCIATES. Owner mailing address on file: 3550 G ST, PHILADELPHIA, PA, 19134.
What companies have offices at 3550 G ST?
1 active business locations at this building appear in Philadelphia public records, including M J ASSOCIATES INC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 3550 G ST?
The Philadelphia roll records 9,112 sq ft of building area, a build year of 1969.
What is the assessed value of 3550 G ST?
$736,200 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
What is the OPA account for 3550 G ST?
OPA account 883362700, site address 3550 G ST, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 3550 G 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.
Working with Philadelphia office parcels? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
Dataset updated . Source: Philadelphia assessment roll, OPA account 883362700.
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, “3550 G ST, Philadelphia, PA (OPA account 883362700)”, https://buildingcensus.com/offices/philly/office-building-c5b3270f (data as of October 10, 2026).