81-unit residential new construction, zoned CMX3.


A seven-story, 81-unit residential building is under construction at 225 N 13th Street, where the lot spans nearly 12,000 square feet in a stretch of Washington Square West that's quietly adding density. The project is cleared to build with modular construction from the third floor up, sitting atop a podium structure that includes ground-floor commercial space—expanded in a recent amendment—along with a loading bay accessed from Summer Street and six bike parking spots. The building will serve as visitor accommodations, a use that straddles the line between short-term stays and conventional multifamily, and it rises by-right under CMX3 zoning that encourages mixed-use development on midblock parcels like this one.
Genesis 225 N 13th LLC holds the site, which hasn't changed hands since 1901, suggesting a long-term ownership situation that finally triggered new construction. The developer trimmed residential amenity spaces in favor of more commercial square footage on the ground level, a nod to retail demand along this stretch of 13th, though the specifics of tenancy remain unannounced. The choice of modular construction above a traditional podium is a cost-and-speed play that's becoming more common in mid-rise projects across the city.
The building joins a modest wave of infill development in the area—105 units are rising within a half-mile, including a 31-unit project at 326 N 12th, a 51-unit building at 217 N 9th, and a 23-unit development up at Spring Garden. None of these are blockbusters, but together they're filling in underbuilt parcels in a neighborhood that straddles Chinatown, the Gayborhood, and the northern edge of Washington Square. The lot at 225 N 13th is sizable enough that it could have supported something taller, but the seven-story envelope fits the scale of nearby blocks and avoids the zoning fights that come with variances.
The project signals that other midblock sites in the neighborhood—particularly those held by long-term owners with aging improvements—could see similar activity as land values and rental fundamentals justify new construction. The decision to dedicate ground-floor space to commercial rather than purely residential amenities suggests confidence in street-level activation, even as retail remains selective. With modular delivery, the building should come online faster than stick-built competitors, adding supply to a corridor that's seen steady absorption but limited new product in recent years.
📄 View the project's plan drawings (PDF)As this density arrives, InvestPHL is tracking 155 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 155 nearby opportunities →Major (8+ unit) new-construction projects filed within a half-mile since 2022 — the density gathering around this site.