4-unit residential new construction, zoned RSA5.
A 4-unit residential building is set to rise at 4265 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. Records show the parcel last traded in 2019 for $17K. The plans call for for new construction of a three-story wood-frame attached structure on reinforced concrete footings/foundations with a roof deck and. for use as a multi-family household living for four (4) dwelling units throughout. building shall be fully sprinklered per nfpa13. ** separate permits required for all mechanical, electrical, plumbing, and fire suppression systems. *protection of right-of-way / pedestrians / adjacent properties required during all construction.*energy code compliance in accordance with 2018 iecc.** prior to issuance of c.o submittal of air barrier checklist and envelope testing certificate is required. both to be completed by an approved party.**.
The owner of record is Ata 7 Real Estate Sales &. 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.