1740 SOUTH ST
OFF BLD N/PKG N/COM MASON · Philadelphia · 19146
At a glance
1740 SOUTH ST in Philadelphia, PA is listed on the Philadelphia property roll as “OFF BLD N/PKG N/COM MASON”, OPA account 883509800. The roll records 45,335 sq ft of building area, 5 floors, a 1986 build year and an assessed value of $8,382,500. It last sold for $10,500,000 in May 2019. 2 active business locations at this address appear in public records.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| May 2019 | $10,500,000 | not rated | County roll | — |
Prices are the consideration recorded in Philadelphia's public property records. Where a qualification code exists it is the assessor's judgement of whether a transfer was arm's length; transfers without one appear unrated rather than assumed clean. Whether a building is on the market today, and at what price, is not a public record and is not shown here — asking prices, listings and lease terms live in private commercial databases.
Public record — 2 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| MARLEN 1 LLC | — | Mar 2019 | Philadelphia L&I licence | folio match · high |
| 1740 LIMITED PARTNERSHIP | — | Feb 2009 | Philadelphia L&I licence | folio match · high |
Philadelphia assessment roll
Parcel record
| Field | Value |
|---|---|
| OPA account | 883509800 |
| Site address | 1740 SOUTH ST |
| Land use (DOR) | DD0 — OFF BLD N/PKG N/COM MASON |
| Building area (actual) | 45,335 sq ft |
| Floors / units / buildings | 5 / — / — |
| Lot size | — |
| Year built | 1986 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $8,382,500 |
Recorded owner (assessment roll)
HTA 1740 SOUTH STREET LLC
Owner mailing address: 16435 N SCOTTSDALE RD, SCOTTSDALE, AZ, 85254
Location
- Address
- 1740 SOUTH ST
- City
- Philadelphia
- ZIP
- 19146
- Coordinates
- 39.94417, -75.17172
Within ~650 m
Nearby office buildings
- 1500-06 WALNUT ST5 tenants
355,036 sq ft · 22 fl · 1928
- 1524-30 WALNUT ST2 tenants
270,501 sq ft · 21 fl · 1928
- 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
- 1525-29 LOCUST ST2 tenants
107,996 sq ft · 18 fl · 1983
How does 1740 SOUTH ST compare with other Philadelphia office buildings?
At 45,335 sq ft, 1740 SOUTH ST is about 25% larger 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 $185 per square foot of building area, against $163 across all office floor area on the roll.
The last recorded sale priced it at $232 per square foot.
What has happened at 1740 SOUTH ST recently?
1 recorded transfer is on file for this parcel, the latest dated May 2019.
What does “OFF BLD N/PKG N/COM MASON” mean for this parcel?
The Philadelphia roll classifies OPA account 883509800 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 1740 SOUTH ST?
The recorded owner on the Philadelphia assessment roll (current) is HTA 1740 SOUTH STREET LLC. Owner mailing address on file: 16435 N SCOTTSDALE RD, SCOTTSDALE, AZ, 85254.
What companies have offices at 1740 SOUTH ST?
2 active business locations at this building appear in Philadelphia public records, including MARLEN 1 LLC, 1740 LIMITED PARTNERSHIP. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1740 SOUTH ST?
The Philadelphia roll records 45,335 sq ft of building area, 5 floors, a build year of 1986.
What is the assessed value of 1740 SOUTH ST?
$8,382,500 on the Philadelphia roll. Assessed values are taxable-roll figures, not market prices.
When did 1740 SOUTH ST last sell?
The last recorded transfer was in May 2019 for $10,500,000 ($232 per square foot).
What is the OPA account for 1740 SOUTH ST?
OPA account 883509800, site address 1740 SOUTH ST, Philadelphia. It is the key to look the parcel up in the Office of Property Assessment nightly roll (Philadelphia).
More around 1740 SOUTH 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 883509800.
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, “1740 SOUTH ST, Philadelphia, PA (OPA account 883509800)”, https://buildingcensus.com/offices/philly/office-building-6b874c4c (data as of October 10, 2026).