15 William, initially known as the William Beaver House, was designed by
Tsao & McKown, Ismael Leyva Architects, and
SLCE Architects. The interior was designed by SPAN Architecture and Allied Works Architecture. The building was jointly developed by SDS Procida Development Group and
André Balazs. The building is high, with 47 floors, and includes 320 residential units and two commercial spaces. Its general appearance has earned it the nickname "The Post-It Note Building".
Features According to two of the project's principal architects, Calvin Tsao and Zack Mckown, the condominium was designed as a "vertically integrated village" and a "self-sufficient place to live." The interiors have open living spaces and bathrooms with separate rain showers and oversized deep-soaking tubs. Bedrooms and bathrooms are en suite with louvered doors. The ground floor of the building includes retail space with a deli and a subterranean parking lot. ==History==