Garage Conversion Contractor | Los Angeles

Garage conversion ADU costs in Los Angeles typically range from $50,000 for a basic studio conversion to $200,000+ for a full 2-bedroom, 2-bathroom unit with premium finishes. The most common projects — a functional 1-bed/1-bath conversion of a standard two-car garage — tend to fall in the $90,000–$150,000 range. Key cost drivers include the amount of new plumbing required, whether a new HVAC system is needed, the level of finishes you choose, and any hillside or seismic engineering requirements specific to your LA property.

A detached garage conversion creates a fully independent ADU with its own entrance, often its own utility meters, and complete separation from the main house — ideal for rental income or maximum privacy. An attached garage conversion is connected to the primary home and often shares some utilities, making it a more affordable option that works well for in-law suites or home offices. Both are excellent ADU options in Los Angeles, and both qualify under SB-9. We'll help you determine which is the right fit based on your goals and property layout.

The total timeline for an ADU garage conversion in Los Angeles breaks down roughly as follows: design and planning takes 2–4 weeks, permit submission and approval typically takes 4–10 weeks (California's streamlined ADU laws have significantly reduced this), and construction runs 8–14 weeks depending on project size and complexity. Most of our clients move from initial consultation to a fully permitted, completed ADU in 4–6 months. We provide a detailed timeline before we start and keep you updated weekly throughout construction.

Yes — and this is not optional. A permitted ADU is legal, insurable, and adds real value to your property. An unpermitted conversion creates liability, cannot be legally rented, and can result in fines or forced demolition. The good news: California has streamlined ADU permitting significantly. The state mandated that every building department create a simplified approval pathway specifically for ADU projects. We handle the entire permitting process for you, from application submission to coordinating city inspections and receiving your Certificate of Occupancy.

Rental income from a garage conversion ADU in Los Angeles varies by location, size, and finishes. As a general guide: a studio ADU in LA typically rents for $1,400–$2,200/month; a 1-bedroom unit can command $1,800–$3,000/month; and a 2-bedroom ADU in a desirable LA neighborhood can rent for $2,500–$4,000+/month. At these rates, many homeowners fully recover their ADU conversion investment within 5–8 years while enjoying ongoing passive income. Properties near transit corridors, beaches, or employment hubs typically rent at the higher end.

Yes. California law allows homeowners to legalize unpermitted ADUs without penalty, and your structure will be evaluated against the building codes that were in effect when it was originally built — not today's stricter standards. This is a significant benefit for older conversions. We've helped many Los Angeles homeowners bring existing unpermitted garage conversions up to code, get them fully permitted, and convert an illegal liability into a legal, rentable asset. Contact us for a free assessment of your existing structure.