Black gridded windows form Valley Street house extension in San Francisco

San Francisco firms Síol Studios and Levy Art and Architecture have updated this house in the city's Noe Valley neighbourhood with a gridded glass extension and two rooftop decks.
Called Valley Street, the Craftsman-style house was renovated by Levy Art and Architecture with interiors by Síol Studios for a couple who is passionate about art. One is a tech entrepreneur, and the other is a community organiser.The team created the 3,280-square-foot (306-square-metre) home with a combina