SUNNYVALE—Silicon Valley has sprouted numerous "hacker spaces" in recent years, where software geeks get together to program and build new Web creations. Now there's a hangout for "biohackers," too.

BioCurious, a 2,500-square-foot community lab in a low-slung office building in Sunnyvale, opened in November as a place where scientists, entrepreneurs and others can meet to conduct biology experiments and innovate on everything from bacteria to thermal cyclers. The facility also...