170 S INDEPENDENCE MALL W
OFF BLD W/COM GAR MASONRY · Philadelphia · 19106
At a glance
170 S INDEPENDENCE MALL W in Philadelphia, PA is listed on the Philadelphia property roll as “OFF BLD W/COM GAR MASONRY”, OPA account 883002510. The roll records 1,102,992 sq ft of building area, 12 floors, a 1911 build year and an assessed value of $185,552,500. 9 active business locations at this address appear in public records.
Public record — 9 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| Madis Old City LLC (Madis Coffee) | — | Mar 2026 | Philadelphia L&I licence | folio match · high |
| H'Y2 Curtis LLC | — | Sep 2025 | Philadelphia L&I licence | folio match · high |
| Aro Biotherapeutics Company | — | Jun 2022 | Philadelphia L&I licence | folio match · high |
| Biolabs Philadelphia LLC (Biolabs Philadelphia LLC) | — | Apr 2022 | Philadelphia L&I licence | folio match · high |
| Imvax (Imvax) | — | Mar 2021 | Philadelphia L&I licence | folio match · high |
| PJ Clarkes at the Curtis LLC | — | Aug 2018 | Philadelphia L&I licence | folio match · high |
| GERMANTOWN FRIENDS SCHOOL | — | Sep 2017 | Philadelphia L&I licence | folio match · high |
| CURTIS PARTNERS LP (C/O CBRE INC) | — | Nov 2010 | Philadelphia L&I licence | folio match · high |
| BUSY BEE LEARNING CENTER INC | — | Apr 2005 | Philadelphia L&I licence | folio match · high |
Philadelphia assessment roll
Parcel record
| Field | Value |
|---|---|
| OPA account | 883002510 |
| Site address | 170 S INDEPENDENCE MALL W |
| Land use (DOR) | DA0 — OFF BLD W/COM GAR MASONRY |
| Building area (actual) | 1,102,992 sq ft |
| Floors / units / buildings | 12 / — / — |
| Lot size | — |
| Year built | 1911 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $185,552,500 |
Recorded owner (assessment roll)
KEYSTONE PROPERTY GROUP
Owner mailing address: 125 E ELM ST, CONSHOHOCKEN, PA, 19428
Location
- Address
- 170 S INDEPENDENCE MALL W
- City
- Philadelphia
- ZIP
- 19106
- Coordinates
- 39.94819, -75.15181
Within ~650 m
Nearby office buildings
- 508-32 WALNUT ST2 tenants
986,960 sq ft · 20 fl · 1918
- 701-39 MARKET ST6 tenants
845,230 sq ft · 5 fl · 1893
- 150 N INDEPENDENCE MALL W2 tenants
816,208 sq ft · 8 fl · 1976
- 819-41 CHESTNUT ST1 tenants
693,000 sq ft · 12 fl · 1926
- 101 N INDEPENDENCE MALL E0 tenants
582,120 sq ft · 11 fl · 1973
- 100-16 S INDEPENDENCE MALL W3 tenants
404,118 sq ft · 9 fl · 1965
How does 170 S INDEPENDENCE MALL W compare with other Philadelphia office buildings?
At 1,102,992 sq ft, 170 S INDEPENDENCE MALL W is about 30 times the size of the average office building on the Philadelphia roll, which comes to 36,284 sq ft across 2,470 buildings.
With 12 floors it is one of 82 office buildings of ten or more floors in the metro.
Its assessed value works out to $168 per square foot of building area, against $163 across all office floor area on the roll.
What does “OFF BLD W/COM GAR MASONRY” mean for this parcel?
The Philadelphia roll classifies OPA account 883002510 as “OFF BLD W/COM GAR MASONRY” (use code DA0). 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 170 S INDEPENDENCE MALL W?
The recorded owner on the Philadelphia assessment roll (current) is KEYSTONE PROPERTY GROUP. Owner mailing address on file: 125 E ELM ST, CONSHOHOCKEN, PA, 19428.
What companies have offices at 170 S INDEPENDENCE MALL W?
9 active business locations at this building appear in Philadelphia public records, including Madis Old City LLC (Madis Coffee), H'Y2 Curtis LLC, Aro Biotherapeutics Company, Biolabs Philadelphia LLC (Biolabs Philadelphia LLC), Imvax (Imvax). Public records under-count tenants that don't hold a local receipt or register the address.
How big is 170 S INDEPENDENCE MALL W?
The Philadelphia roll records 1,102,992 sq ft of building area, 12 floors, a build year of 1911.
What is the assessed value of 170 S INDEPENDENCE MALL W?
$185,552,500 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
What is the OPA account for 170 S INDEPENDENCE MALL W?
OPA account 883002510, site address 170 S INDEPENDENCE MALL W, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 170 S INDEPENDENCE MALL W
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 883002510.
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, “170 S INDEPENDENCE MALL W, Philadelphia, PA (OPA account 883002510)”, https://buildingcensus.com/offices/philly/office-building-15941064 (data as of October 10, 2026).