IS3 HAVERFORD LLC
4 office properties in Philadelphia recorded to 4 owner entities mailing to 2929 WALNUT ST STE 1540, PHILADELPHIA, PA. likely one owner
At a glance
IS3 HAVERFORD LLC is recorded as the owner of 4 office properties (4 parcels) in Philadelphia, totalling 624.1K sq ft of building area with $63.4M of assessed value. The holdings sit in 4 owner entities that share one tax-bill mailing address in PHILADELPHIA, PA — and a name root, which is how a single sponsor usually holds property.
County assessment roll
Properties
| Building | Submarket | Sq ft | Assessed | Last sold | Tenants |
|---|---|---|---|---|---|
| 4601 MARKET ST | Philadelphia | 245.2K | $52M | — | 2 |
| 4701 MARKET ST | Philadelphia | 171.4K | $2.5M | — | 0 |
| 4610 HAVERFORD AVE | Philadelphia | 162.5K | $5M | — | 0 |
| 3647-69 N FRONT ST | Philadelphia | 45K | $3.9M | $7,800,000 · Feb 2020 | 0 |
Names on the deeds
Owner entities at this address
- IS3 TEAM LLC
- IS3 MARKET LLC
- IS3 HAVERFORD LLC
- ISSTC PROPCO LLC
How this group was built. These entities share both a mailing address and a name root, which is how a single sponsor usually holds property — one entity per building.The county records an owner and a mailing address for every parcel; this page collects the office parcels whose owners mail to the same address, and counts buildings rather than parcels using the county's own condo-to-building link. Lease terms, rents and the identity of a manager acting for the owner are not public records and are not shown.
Where are IS3 HAVERFORD LLC's office buildings?
All 4 properties are in Philadelphia.
The largest is 4601 MARKET ST in Philadelphia at 245.2K sq ft.
Recorded build years run from 1960 to 1975.
How large is this portfolio within Philadelphia's office market?
Its 624.1K sq ft is 0.70% of the 89.6M sq ft of office building area on the Philadelphia roll.
Its $63.4M of assessed value is 0.43% of the metro's office total.
It holds 4 of the metro's 2,470 office buildings.
1 of its parcels carry a recorded sale price; the most recent was 3647-69 N FRONT ST in Feb 2020 for $7,800,000.
Frequently asked questions
How many office buildings does IS3 HAVERFORD LLC own in Philadelphia?
4 office properties (4 parcels) on the Philadelphia roll, counted by building rather than by condo parcel.
What is IS3 HAVERFORD LLC's largest office building?
4601 MARKET ST, Philadelphia — 245.2K sq ft, assessed at $52M.
What are IS3 HAVERFORD LLC's office properties worth?
Their combined assessed value on the current Philadelphia roll is $63,368,400. Assessed values are taxable-roll figures, not market prices.
Are these properties owned by one company?
These entities share both a mailing address and a name root, which is how a single sponsor usually holds property — one entity per building. 4 owner entities share the mailing address. It is evidence of common ownership, not proof of it.
When did one of IS3 HAVERFORD LLC's Philadelphia office properties last change hands?
The most recent recorded transfer among these parcels is 3647-69 N FRONT ST, Feb 2020, for $7,800,000.
Related
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.
Dataset updated . Derived from public data sources.
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, “IS3 HAVERFORD LLC — Philadelphia office property holdings”, https://buildingcensus.com/offices/philly/owners/is3-haverford-llc-3022b8 (data as of October 10, 2026).