9-unit residential new construction, zoned RSA5.
A nine-unit building at 4637 Germantown Ave has been delivered, adding three stories of rental housing to a narrow 3,011-square-foot lot in Germantown. The project was cleared to build in August 2022 and required underpinning work on the adjoining property at 4641 Germantown Ave, a detail that hints at the tight, incremental infill typical of mature residential corridors along the avenue. The building is fully sprinklered and configured as Group R-2 occupancy—straightforward multifamily in a zone that allows it by right.
The site falls within RSA5 zoning, which permits attached residential without need for variance. The lot was acquired in 2026 by 4637 Germantown Avenue LLC, and the project required both a zoning approval and a unity-of-use agreement, suggesting the assemblage or shared access with adjacent parcels. Work also extended into the public right-of-way, a common requirement for street-facing projects along Germantown's commercial spine.
This delivery sits within a half-mile of roughly 90 other units, including the larger 90-unit mixed-use project at 4701-15 Wayne Ave. Together, these projects reflect a modest but measurable uptick in multifamily development across upper Germantown, where underutilized lots and aging commercial storefronts have begun attracting small-scale rental plays. The neighborhood's RSA zoning, combined with reasonably sized parcels and transit access, makes it a workable option for developers willing to navigate site constraints like underpinning and narrow lot depths.
The success of this nine-unit project—and its relatively quick path from approval to completion—could point the way for similar parcels along Germantown Ave that remain single-story commercial or vacant. The ability to build three stories by right, without layering in ground-floor retail or parking, streamlines the pro forma and lowers execution risk, particularly for local sponsors comfortable with tight urban sites.
📄 View the project's plan drawings (PDF)As this density arrives, InvestPHL is tracking 74 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 74 nearby opportunities →Major (8+ unit) new-construction projects filed within a half-mile since 2022 — the density gathering around this site.