Junior ADUs (JADUs) in Los Angeles

A junior ADU, or JADU, is a unit of no more than 500 square feet created entirely within a single-family home, including an attached garage. It needs an efficiency kitchen: a cooking appliance, a food preparation counter and storage cabinets. It can have its own bathroom or share one with the main house.

Only in one case. If the JADU shares a bathroom with the main house, the owner must live on the property. If the JADU has its own bathroom, owner occupancy is not required. This is the rule stated in the March 2026 edition of the state's ADU Handbook, following Assembly Bill 1154.

Yes. On a lot with a single-family home, state law allows a junior ADU to be combined with an ADU, including a new detached ADU. The state's ADU Handbook describes one converted ADU, one junior ADU and one new detached ADU on the same lot.

We do not publish a price range for junior ADUs: the cost depends on the room being converted, whether a new bathroom is added, and the plumbing and electrical work the kitchen needs. Every project starts with a free 45-minute site assessment, and the fixed price that follows includes design, permits, utilities, finishes and landscaping.

Five steps, one contract, one point of contact. We handle the site assessment and feasibility, design with 3D renderings of your exact backyard, the entire city permit process (average approval: 6 weeks), construction with a dedicated project manager and a weekly photo report, then turnkey delivery once the final inspection has passed.