Market Insights  /  Old City & Society Hill
Development Watch · Old City & Society Hill

708 Sansom StCleared to build

63-unit residential new construction, zoned CMX5.

Filed plan drawing for 708 Sansom St
From the project's plan drawings — schematic and subject to revision; not a marketing rendering.View the full plan set (PDF) →

A 63-unit residential building is set to rise at 708 Sansom St in Old City & Society Hill, a mid-scale addition to one of the city's busier development corridors. It was cleared to build in Dec 1, 2021.

The 9,053 sq ft site is zoned CMX5, which supports a building on the order of 26 stories by right. Records show the parcel last traded in 2023 for $7.5M. The plans call for new construction of a 25 story high-rise structure for use as sixty-three (63) dwelling units with accessory amenity spaces and a shell commercial spaces (separate fit-out permit required prior to occupancy) as per approved plans. work to include installation of foundation shoring and underpinning work to be monitored by pa licensed pe at all times. building to be fully sprinklered per nfpa 13 and include standpipes per nfpa 14. *2018 ibc* **separate permits required for mep & fire suppression work**.

The owner of record is Jr Sansom Partners LLC. The project's plan drawings are on file — worth a look for anyone underwriting the surrounding block.

For now it stands out on its block — there's little other major development within a half-mile, which makes the surrounding under-built parcels worth a closer look as this density arrives.

We'll update this page as the project progresses — leasing, retail tenants, renderings, and construction milestones as they surface. The relevant question for investors and agents: what are the surrounding parcels worth to a builder now that this is coming?

📄 View the project's plan drawings (PDF)
Schematic massing — illustrative of the ~26-story by-right envelope, not the developer's design.
Units
63
Zoning
CMX5
By-right envelope
~26 stories
Lot
9,053 sq ft
Last sale
$7.5M · 2023
Cleared to build
Dec 1, 2021
For developers & investors

Underpriced parcels near this project

As this density arrives, InvestPHL is tracking 61 under-built parcels within a half-mile that a developer could still acquire and build — each carrying a builder's max bid. Addresses and figures are members-only.

~163buildable units
████████ Street
RM1 · 0.45 mi away
Max bid to a builder $12M · Opportunity Score 99
Unlock →
~104buildable units
████████ Street
RM1 · 0.42 mi away
Max bid to a builder $7.6M · Opportunity Score 98
Unlock →
~286buildable units
████████ Street
CMX5 · 0.09 mi away
Max bid to a builder $4.7M · Opportunity Score 97
Unlock →
~286buildable units
████████ Street
CMX5 · 0.09 mi away
Max bid to a builder $4.8M · Opportunity Score 97
Unlock →
~226buildable units
████████ Street
CMX5 · 0.38 mi away
Max bid to a builder $3.7M · Opportunity Score 95
Unlock →
Unlock the 61 nearby opportunities →
Progress

How this project is moving

In permitting ⚠ Status unclear — no recent activity
Estimated from the construction permit sequence — an approximation of stage, not a precise schedule.
Every logged milestone appears here — highlighted ones are the headline stages; the rest track interim construction activity. Checked daily.
Compiled by InvestPHL. Unit counts, scope, and ownership are as recorded and subject to revision; the massing figure is a schematic illustration of the by-right envelope, not the developer's design or a marketing rendering. Verify zoning, status, and title with counsel before acting. InvestPHL does not list, market, or represent any property, buyer, or seller.