San Diego Casita Adu contractor is a full-service construction company that specializes in building Casitas, ADU and other secondary dwellings. We offer a wide range of services to assist our clients in finding the best solutions for their needs. Each project is unique and our team prides itself on treating each project with full commitment. We are dedicated to making sure that every job is done right the first time. Our workers are experienced professionals, who have the expertise to know how to build granny flats, modular homes and other secondary dwellings.