3509 SPRING GARDEN ST
OFF BLD N/PKG N/COM MASON · Philadelphia · 19104
At a glance
3509 SPRING GARDEN ST in Philadelphia, PA is listed on the Philadelphia property roll as “OFF BLD N/PKG N/COM MASON”, OPA account 774580010. The roll records 28,583 sq ft of building area, a 1920 build year and an assessed value of $5,607,900.
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 | 774580010 |
| Site address | 3509 SPRING GARDEN ST |
| Land use (DOR) | DD0 — OFF BLD N/PKG N/COM MASON |
| Building area (actual) | 28,583 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | — |
| Year built | 1920 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $5,607,900 |
Recorded owner (assessment roll)
3509 SPRING GARDEN LP
Owner mailing address: 3201 ARCH ST, PHILADELPHIA, PA, 19104
2 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
- 3509 SPRING GARDEN ST
- City
- Philadelphia
- ZIP
- 19104
- Coordinates
- 39.96299, -75.19363
Within ~650 m
Nearby office buildings
- 25 N 38TH ST0 tenants
428,400 sq ft · 13 fl · 2024
- 3801-15 MARKET ST1 tenants
120,000 sq ft · 3 fl · 1950
- 3201-21 ARCH ST0 tenants
55,512 sq ft · 1900
- 3748 LANCASTER AVE3 tenants
31,500 sq ft · 4 fl · 2025
- 3500 FAIRMOUNT AVE0 tenants
13,471 sq ft · 2010
- 3519-23 LANCASTER AVE0 tenants
9,440 sq ft · 2 fl · 1930
How does 3509 SPRING GARDEN ST compare with other Philadelphia office buildings?
At 28,583 sq ft, 3509 SPRING GARDEN ST is about 21% 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 $196 per square foot of building area, against $163 across all office floor area on the roll.
Does the owner of 3509 SPRING GARDEN ST hold other Philadelphia office property?
2 Philadelphia office properties (2 parcels, 38.1K sq ft) are recorded to 2 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 N/PKG N/COM MASON” mean for this parcel?
The Philadelphia roll classifies OPA account 774580010 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 3509 SPRING GARDEN ST?
The recorded owner on the Philadelphia assessment roll (current) is 3509 SPRING GARDEN LP. Owner mailing address on file: 3201 ARCH ST, PHILADELPHIA, PA, 19104.
What companies have offices at 3509 SPRING GARDEN 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 3509 SPRING GARDEN ST?
The Philadelphia roll records 28,583 sq ft of building area, a build year of 1920.
What is the assessed value of 3509 SPRING GARDEN ST?
$5,607,900 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
What is the OPA account for 3509 SPRING GARDEN ST?
OPA account 774580010, site address 3509 SPRING GARDEN ST, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 3509 SPRING GARDEN 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 774580010.
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, “3509 SPRING GARDEN ST, Philadelphia, PA (OPA account 774580010)”, https://buildingcensus.com/offices/philly/office-building-bac441d9 (data as of October 10, 2026).