What is the process for legally converting my garage into a living space, known as a Junior Accessory Dwelling Unit (JADU), in California?

To legally convert your garage into a Junior Accessory Dwelling Unit (JADU) in California, you must obtain a permit from your local city or county by submitting compliant architectural plans and recording a deed restriction. The process is streamlined by state law, but you must adhere to specific local procedures. Here is the step-by-step process for a JADU conversion: Step 1: Verify Local Requirements Contact your local city or county Planning and Building Department. Request their specific checklist and application for a JADU. State law mandates that a JADU must be under 500 square feet, exist within the walls of a single-family home (like a garage), have a separate exterior entrance, and include an efficiency kitchen. Step 2: Prepare Compliant Plans Hire a qualified architect or draftsperson to create architectural plans. These plans must detail the conversion, showing compliance with building and safety codes, the location of the efficiency kitchen (sink, cooking facility, counter, and storage), and the separate entrance. Step 3: Submit the Permit Application File your completed application, the architectural plans, and any required fees with your local Planning and Building Department. By law, your local agency must act on a complete application within 60 days. Step 4: Record a Deed Restriction Before the final permit is issued, you must sign and record a deed restriction with your County Recorder's Office. This legal document states that the JADU cannot be sold separately from the primary residence and that the property owner must live in either the main home or the JADU. Step 5: Obtain Permit and Build Once your plans are approved and the deed restriction is recorded, the building department will issue the permit. You can then begin construction. Ensure you schedule and pass all required inspections during the construction process to receive final approval. Important details and nuances: A JADU can share a bathroom with the main residence. Your local agency cannot require you to replace the parking spaces lost in the garage conversion. Impact fees, which are often charged for new construction, are typically prohibited for JADUs. Warnings and limitations: The owner-occupancy requirement is a critical, ongoing legal obligation. You cannot sell the JADU as a separate unit from the main house. Local ordinances may prohibit the use of a JADU for short-term rentals (less than 30 days). This is general information and does not constitute legal advice. For complex situations, consult with a qualified California attorney.