ADU Los Angeles — Expert Accessory Dwelling Unit Builders

FAQ

How much does it cost to build an ADU in Los Angeles?

ADU costs in Los Angeles vary significantly based on type and size. A garage conversion ADU typically costs $80,000 to $150,000, a room addition ADU $100,000 to $200,000, and a new detached ADU $150,000 to $350,000 or more depending on size and finishes. Black Wall Builders provides a detailed ADU cost estimate after your free in-home consultation.

How long does it take to build an ADU in Los Angeles?

Building an ADU in Los Angeles typically takes 6 to 12 months from initial consultation to certificate of occupancy, with a significant portion of that time spent in the LADBS permitting process. Garage conversion ADUs tend to be faster, while new detached ADU construction takes longer. Black Wall Builders manages the entire timeline to keep your Los Angeles ADU project on track.

What types of ADUs can I build in Los Angeles?

In Los Angeles, you can build three main types of ADUs: garage conversion ADUs (converting your existing attached or detached garage), room addition ADUs (building an addition attached to your main home), and detached ADUs (a fully separate new construction unit on your property). California’s ADU laws also allow junior ADUs within existing home square footage. Black Wall Builders designs and builds all ADU types across Los Angeles.

How much rental income can an ADU generate in Los Angeles?

Los Angeles is one of the strongest rental markets in the United States. A well-built ADU in LA can generate $1,500 to $4,000 or more per month in rental income depending on location, size, and finishes — making ADU construction one of the most financially rewarding home improvements available to Los Angeles property owners

Do you handle all ADU permits in Los Angeles?

Black Wall Builders approaches complex remodels across Los Angeles — including hillside homes with aging infrastructure, mid-century properties in Silver Lake and Los Feliz, and post-war homes in Westside neighborhoods — through structural evaluation, phased construction planning, LADBS permit management, and skilled trade coordination. Strict quality oversight ensures compliance with California seismic codes and local HOA or HPOZ guidelines throughout every phase.