ADU Construction in Santa Monica, CA
Licensed (CSLB #1155602), insured and BBB Accredited. Free, itemized estimates for adu construction projects in Santa Monica.
ADU Construction for Santa Monica Homeowners
Accessory dwelling units are one of the strongest returns available to Santa Monica property owners. California state law now overrides most local barriers, and lots characterized by coastal bungalows, condos and rent-controlled multifamily buildings frequently have room for a detached unit, a garage conversion, or an attached addition.
We handle the full path: feasibility and setback review, architectural plans, structural engineering, submittal to the City of Santa Monica Building & Safety Division, utility coordination, construction, and final sign-off. You get one contract and one point of contact instead of juggling designers, engineers and subs.
Licensed (CSLB #1155602), insured, BBB Accredited. Warranty available. Call for details.
What's Included
- Detached new-construction ADUs (studio through 2-bedroom)
- Garage and rec-room conversions to legal dwelling units
- Junior ADUs (JADUs) inside the existing footprint
- Plans, Title 24 energy compliance and structural engineering
- Sewer, water, gas and electrical service upgrades
- Permit filing, plan-check corrections and inspections
ADU Construction in Santa Monica — FAQs
Can I build an ADU on my Santa Monica property?
Most single-family and multifamily lots in Santa Monica qualify under current California ADU law. We run a free feasibility check on setbacks, lot coverage and utilities before you spend anything on plans.
What does an ADU cost in Santa Monica?
Budget roughly $200–$400 per square foot. A 600 sq ft detached ADU commonly totals $150,000–$250,000 including plans, permits and utilities. Garage conversions are usually less.
How long does the Santa Monica ADU permit process take?
Plans and plan-check through the City of Santa Monica Building & Safety Division generally take 3–6 months, then 4–8 months to build. Rules change — we confirm current requirements with the building department on every project.
Will an ADU increase my property value?
A permitted ADU adds both rentable income and appraised square footage. Actual value depends on the local rental market and appraisal method, so we recommend confirming with a local agent or appraiser.
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Free ADU Construction Estimate in Santa Monica
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