Accessory Dwelling Units (ADUs) are known by many names: granny flats, in-law units, backyard cottages, secondary units and more. No matter what you call them, ADUs are an innovative, affordable, effective option for adding much-needed housing in California. Ground breaking State legislation initially took effect January 1, 2017, giving California cities more flexibility and latitude for allowing homeowners to build ADUs. Since then, both state and local legislation has been