SB Architects designed this home in the Bernal Heights neighborhood of San Francisco. Project description This urban infill site in San Francisco presented a unique opportunity to create a new, free-standing home, while maintaining the site’s existing structure as a separate residential unit. The site originally housed a single structure – a one-story, one-bedroom home over a two-car garage, constructed in 1931 and totaling only 550 square feet of living space. Since the original structure was built at the rear of the 2,000-square-foot corner lot, and zoning allowed for two units on the site, a new home could be built at the front of the lot, capitalizing upon views and a more prominent street address. The goal for this project was to seize the unique zoning opportunity to build a new home on this desirable, but never-developed, corner site in a dense San Francisco neighborhood. The design concept was driven by the micro-features of the site and the de