Detached ADU design-build in Los Angeles
Studios, one-bedroom and two-bedroom detached ADUs, designed, permitted and built by one team.
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How much does a detached ADU cost in Los Angeles?
Our detached ADUs run from roughly $185,000 for a 400–500 sq ft studio to $420,000 for a 900–1,200 sq ft two-bedroom. The ranges reflect recent detached projects in Los Angeles County and vary with site conditions, utility distance and finish level. A fixed price follows the free site assessment.
| Type | Size | Typical investment | Construction |
|---|---|---|---|
| StudioOpen plan, full bath, kitchenette | 400–500 sq ft | $185,000 – $240,000 | 12–16 weeks |
| One bedroomSeparate bedroom, full kitchen, laundry | 600–750 sq ft | $260,000 – $330,000 | 16–20 weeks |
| Two bedroomTwo bedrooms, 1–2 baths, private outdoor space | 900–1,200 sq ft | $340,000 – $420,000 | 20–26 weeks |
How long does it take to build a detached ADU?
Construction takes 12–16 weeks for a studio, 16–20 weeks for a one-bedroom and 20–26 weeks for a two-bedroom. Design takes 4–6 weeks and permits about 6. From first site visit to keys, a project typically runs 6 to 9 months, and you get the full calendar before you sign.
What is included in the price?
The fixed price covers design, permits, utilities, finishes and landscaping. Every ADU we build has its own connections and, where it makes sense, its own meter: we trench and connect to the existing sewer lateral, upsize the main panel if needed, and pre-wire for solar and EV.
How does the process work?
Five steps, one contract, one point of contact. We handle the site assessment and feasibility, design with 3D renderings of your exact backyard, the entire city permit process (average approval: 6 weeks), construction with a dedicated project manager and a weekly photo report, then turnkey delivery once the final inspection has passed.
- 01
Site Assessment & Feasibility
We visit, measure, check zoning, setbacks, utilities and give you a real number, not an estimate range.
- 02
Design
3D renderings of your exact backyard. You approve every material before we order anything.
- 03
Permits, handled
We manage the entire city process. Average approval: 6 weeks.
- 04
Construction
A dedicated project manager, a weekly photo report, a live schedule you can check anytime.
- 05
Turnkey Delivery
Move-in ready: appliances, finishes, landscaping, final inspection passed.
ADU projects we have built
01The Ridge Studio
- City
- Studio City
- Size
- 480 sq ft
- Build time
- 14 weeks
- Materials
- Cedar & board-formed concrete
02Garden House
- City
- Pasadena
- Size
- 720 sq ft
- Build time
- 18 weeks
- Materials
- White stucco, oak interior
03The Courtyard ADU
- City
- Hancock Park
- Size
- 1,000 sq ft
- Build time
- 22 weeks
- Materials
- Two-bedroom, private patio
04Hillside Retreat
- City
- Sherman Oaks
- Size
- 600 sq ft
- Build time
- 16 weeks
- Materials
- Steel frame, floor-to-ceiling glass
05The Guest Pavilion
- City
- Santa Monica
- Size
- 400 sq ft
- Build time
- 12 weeks
- Materials
- Detached, pool-side
06Multigenerational Home
- City
- Encino
- Size
- 1,200 sq ft
- Build time
- 26 weeks
- Materials
- Fully accessible layout
More questions about detached ADUs

Let's see what your backyard can become.
Free 45-minute site assessment. No pressure, real numbers.