Most ADUs in Los Angeles cost $180,000 to $400,000 or more to build in 2026, or roughly $250 to $400 per square foot. Garage conversions are cheaper at $100,000 to $225,000.
Jayzar pre-designed ADU plan sets start at $7,900 and range to $16,900. This is the plan-set price only; city permit fees and construction are separate.
Usually 8 to 12 weeks. By law the city must approve or deny a complete application within 60 days, though LADWP or hillside clearances can extend the total to 4 to 6 months.
Most ADU projects take 6 to 12 months from start to finish, including design, permitting, and construction.
Cities must allow at least 850 sq ft for a studio or one-bedroom ADU and 1,000 sq ft for a two-plus-bedroom ADU. A detached ADU of at least 800 sq ft is guaranteed, and many cities allow up to 1,200 sq ft.
No. Owner-occupancy is no longer required for ADUs in California.
Yes. California allows garage conversions into ADUs statewide, and cities cannot require you to replace the lost garage parking.
Jayzar Designs serves Los Angeles County and the San Fernando Valley, including Sherman Oaks, Encino, Northridge, Woodland Hills, Van Nuys, Burbank, Glendale, Pasadena, and more.