4-unit residential new construction, zoned RSA5.
A 4-unit residential building is set to rise at 4263 Mantua Ave in University City & Powelton, the kind of by-right infill quietly reshaping the block. It was cleared to build in Dec 27, 2025.
The 1,552 sq ft site is zoned RSA5, which supports a building on the order of 3 stories by right. The parcel last changed hands in 2023. The plans call for for the erection of an attached structure as per approved plans. building to be fully sprinklered per nfpa 13. separate permits required for mep & fp work.
The owner of record is A To Z Real Estate Transaction 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, 12 other major projects have broken ground since 2022 — roughly 241 units of new supply — including the 8-unit project at 1221 N 42nd St, the 10-unit project at 893 Belmont Ave, the 73-unit project at 1238-46 Belmont Ave. 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 114 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 114 nearby opportunities →Major (8+ unit) new-construction projects filed within a half-mile since 2022 — the density gathering around this site.