5-unit residential new construction, zoned CMX2.
A 5-unit residential building is set to rise at 4507 Locust St in West Philadelphia, the kind of by-right infill quietly reshaping the block. It was cleared to build in May 1, 2026.
The 1,681 sq ft site is zoned CMX2, which supports a building on the order of 3 stories by right. The parcel last changed hands in 2025. The plans call for new construction of a three (3) story building with cellar, interior mezzanines and private roof deck with pilot house for use as five (5) dwelling units as per approved plans. building to be fully sprinklered per nfpa 13 and include a standpipe system per nfpa 14. see permit sp-2026-000136 for associated excavation work and adjacent property protections. *2018 ibc review* **separate permits required for mep & fire suppression work**.
The owner of record is Penn Locust LLC. The project's plan drawings are on file — worth a look for anyone underwriting the surrounding block.
It isn't rising in isolation. Within a half-mile, 9 other major projects have broken ground since 2022 — roughly 483 units of new supply — including the 20-unit project at 222 S 45th St, the 12-unit project at 4245 Sansom St, the 170-unit project at 301 S 48th St. That kind of concentration is exactly what pulls land values, and buyer attention, toward a block.
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)As this density arrives, InvestPHL is tracking 100 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.
Unlock the 100 nearby opportunities →Major (8+ unit) new-construction projects filed within a half-mile since 2022 — the density gathering around this site.