A startup that spun out of Airbnb to manufacture tiny homes at a factory in Mexico is launching a mortgage product it hopes will relieve California’s housing crisis. Samara, which raised $41 million in 2023, is now getting into the financing business. It will start offering a mortgage that lets homeowners take equity out of their primary house to install backyard units, technically called accessory dwelling units, or ADUs. The company is providing a financing and logistics shortcut for...