ADU Builder in Santa Monica, CA
Searching for ADU builder in Santa Monica? HMO Construction builds across Santa Monica and greater Los Angeles — licensed, bonded, and insured, with fixed written pricing and free estimates.
ADU Builder in Santa Monica
Detached and attached accessory dwelling units — also known as granny flats or in-law suites — from design and permit through framing, utilities, and final walkthrough. We handle the LADBS permit path and JADU/ADU code so your unit is rentable and inspection-ready.
Coastal permitting and strict setbacks — we plan for both. Every Santa Monica project is run by one team from drawings to final walkthrough — no subcontractor runaround, no surprise pricing.
What's included
- Detached, attached & garage-conversion ADUs
- Design, drawings & city permit handling
- Full utilities: water, sewer, electrical sub-panel
- Title-24 energy compliance & inspections
- Rentable, move-in-ready finish
Why Santa Monica homeowners choose HMO Construction
We're a full-service general contractor based nearby in Reseda, so we know Santa Monica permitting, inspectors, and lot conditions. You get fixed written pricing before work starts, and we'll beat any legitimate estimate in town.
ADU Builder in Santa Monica — FAQ
How much does an ADU cost in Santa Monica?
Most Santa Monica ADUs run about $150k–$350k depending on size, site work, and finishes. After a free on-site visit we give you fixed written pricing — no surprises — and we’ll beat any legitimate quote.
How long does it take to build an ADU in Santa Monica?
Plan on roughly 2–4 months for design and permits in Santa Monica, then 3–5 months of construction. We manage the LADBS/city path so it keeps moving.
Do I need a permit for an ADU in Santa Monica?
Yes. ADUs require permits — we handle the drawings, submittal, and inspections for your Santa Monica property so the finished unit is legal and rentable.
Is an ADU the same as a granny flat in Santa Monica?
Yes — "granny flat," "in-law suite," and "ADU" all mean the same accessory dwelling unit under California and Santa Monica code. We build all three types: detached, attached, and garage-conversion.
Permits in Santa Monica
Santa Monica is its own incorporated city, so plans go to the City of Santa Monica's building department — not to Los Angeles LADBS. Its own zoning code, setbacks and plan-check queue apply, and they differ from the City of LA's. We file the drawings, answer plan-check corrections and book the inspections.