Question 1

How much does a new detached ADU cost in Los Angeles?

Accepted Answer

New detached ADU construction in Los Angeles starts from $150,000 all-inclusive, covering design, engineering, all permit fees, full construction, and the certificate of occupancy. A typical 600–800 sq ft one-bedroom detached ADU runs $175,000–$230,000. Final cost depends on size, site conditions, and finish level. We provide a fixed all-inclusive price after the free property assessment.

Question 2

How long does it take to build a new detached ADU in Los Angeles?

Accepted Answer

From design kickoff through certificate of occupancy, most new detached ADUs in Los Angeles take 10–14 months. Design takes 4–6 weeks; LADBS plan check runs 10–16 weeks; construction takes 12–18 weeks post-permit. Properties in smaller city jurisdictions like Culver City or Burbank may run slightly faster. We set a property-specific timeline during the free assessment.

Question 3

How big can I build a new detached ADU in Los Angeles?

Accepted Answer

California law allows detached ADUs up to 1,200 sq ft regardless of lot size. Most LA County lots practically accommodate 400–900 sq ft, constrained by setbacks (typically 4 ft rear and side), lot coverage limits, and available yard space. We confirm the maximum buildable envelope for your specific lot during the free property assessment.

Question 4

Do I need to replace existing parking if I build a detached ADU?

Accepted Answer

Only if construction of the ADU eliminates an existing required parking space. If you're building in open yard space and not removing a garage, no parking replacement is required. If a garage is demolished to make room, replacement rules may apply, though California state law limits how cities can enforce this. We assess your specific situation during the feasibility review.

Question 5

What's included in your all-inclusive new ADU construction price?

Accepted Answer

Everything: architectural design, structural engineering, soils report if required, all permit fees and plan check costs, full construction from grading and foundation through finish carpentry and appliances, utility connections, and the final certificate of occupancy. No separate design contract. No open-ended construction budget. One fixed number.

Question 6

Can I build a two-story detached ADU in Los Angeles?

Accepted Answer

In most Los Angeles jurisdictions, yes. LADBS allows two-story detached ADUs up to 16 ft in height on standard lots, and up to 18 ft in some transit-adjacent zones. Two-story construction adds cost and complexity: additional structural engineering, exterior stairs, and in some cases additional fire safety requirements. We design to your city's specific height allowances from the start.

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