The Los Angeles City Council has voted unanimously to set aside $120 million, 10 percent of the Proposition HHH supportive housing bond, for a pilot program that seeks strategies for expediting and containing the cost of permanent supportive housing development. The vote authorized Mayor Eric Garcetti to seek proposals for 1,000 units of supportive housing as a test of alternatives to conventional construction methods, including prefabricated housing, backyard flats, rehabbed single-room-occupancy units and shared housing. Winning proposals must include space and a plan backed by supportive services for future residents.