378-unit residential new construction, zoned CMX5.


A 30-story tower containing 378 apartments has wrapped at 210 South 12th Street, adding significant density to the eastern edge of Washington Square West. The building includes 96 accessory parking spaces, 130 bike spaces, and ground-floor commercial shells on the first and second floors that remain vacant. The project incorporates mixed-income housing and public art, suggesting a blend of market-rate and affordable units, though the exact breakdown hasn't been disclosed.
The site, an 18,342-square-foot lot held by 200 S12 Street Owner LLC since 2022, sits within CMX-5 zoning that allows this kind of vertical development by right. Cleared to build in late 2021, the tower underwent a design amendment in late 2022 that revised the marquee, adjusted foundation and core structural elements, and tweaked both the facade and interior layouts. The shift from an originally described 32 stories to the delivered 30 floors appears to reflect those midstream refinements.
With only one other notable nearby project—a modest 45-unit building at 614 South 13th Street—this tower stands as an outlier in scale for its immediate surroundings, where the immediate half-mile radius holds just those 45 units. That lopsidedness underscores how thinly residential development has spread along this stretch of lower Midtown South, even as the corridor between Rittenhouse and Society Hill fills in elsewhere. The commercial vacancies at the base will be worth watching; successful activation could tilt investor appetite toward similar infill plays on underbuilt parcels nearby, though the lack of a broader development wave suggests caution remains the prevailing mood.
📄 View the project's plan drawings (PDF)As this density arrives, InvestPHL is tracking 81 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 81 nearby opportunities →Major (8+ unit) new-construction projects filed within a half-mile since 2022 — the density gathering around this site.