California lawmakers want to speed up and cut the cost of building new homes. They're looking at solutions like prefab, modular, and manufactured homes, which can be built in factories. Experts say factory-built homes could lower costs by up to 20 percent and cut construction time in half, helping the state meet its goal of two and a-half million new homes by 2030. Last year, lawmakers made it easier to build homes by some changing rules and speeding up approvals. But challenges like financing and complicated regulations remain. Lawmakers are now preparing new bills to help streamline the process.