Accessory Dwelling Units: The Complete California Guide for 2025 Updated for California’s 2025 ADU Laws · By The ADU Pro Quick Answer: Accessory dwelling units are self-contained, secondary living spaces built on the same lot as a primary residence. In California, accessory dwelling units are legal on most residential properties and can generate rental income, … Continue reading Understanding California’s 2025 ADU Laws: Insights from an Experienced ADU Contractor