ADU basics for San Diego homeowners

Accessory dwelling units come in several forms: detached, attached, and conversions of existing space such as garages. Before hiring, clarify whether you need design-only, permit help, or a full design-build team. Check current city and county rules directly with your local permitting office, since requirements change. Ask every contractor for their license number and verify it with the California Contractors State License Board (CSLB).