A city-owned office building in Lower Manhattan could make way for a major residential development, bringing thousands of apartments and new community facilities to the neighborhood.

Mayor Zohran Kwame Mamdani announced on September 22 that the redevelopment of 100 Gold Street is advancing into public review. The updated proposal includes nearly 4,000 homes, with approximately 1,000 designated as permanently affordable and rent-stabilized. According to the city, that affordable housing total would be nearly twice the number built in Manhattan Community District 1 over the past decade.

The proposal adds roughly 300 apartments to the earlier plan. GFP Real Estate is leading the redevelopment, with CetraRuddy credited with the architectural renderings. Although the images suggest a substantial addition to the skyline, final building dimensions and apartment counts remain subject to review.

Rendering: CetraRuddy Architects

Beyond housing, the project would introduce facilities serving both future residents and the surrounding community. Plans include a replacement for Hamilton-Madison House’s existing older adult center, approximately 40,000 square feet of improvements to public spaces, and a 40,000-square-foot commercial fitness center accessible to the public, with community programming.

City officials say the development requires no city subsidy. However, the financing includes the 485-x tax incentive, an important distinction from saying the project receives no public support. Development proceeds would help fund the relocation of municipal agencies currently occupying 100 Gold Street to updated office space.

Rendering: CetraRuddy Architects

The project also has ties to the dispute over Elizabeth Street Garden. Under an agreement reached during the previous administration, the city supported additional housing at other neighborhood sites in exchange for abandoning the planned housing development at the garden.

For now, the next steps involve environmental assessment and public input. Environmental review is expected to continue through fall 2026, followed by entry into the city’s Uniform Land Use Review Procedure, known as ULURP, in 2027. The announcement marks progress toward redevelopment; it does not establish a construction start or completion date.

Rendering: CetraRuddy Architects