Los Angeles ADU Builders
Custom ADUs built for Los Angeles lots
Design, LADBS permits and construction under one contract. Backyard homes, garage conversions and junior ADUs from the Valley to the Westside.
ADU construction services in Los Angeles
From Silver Lake hillsides to San Fernando Valley ranch lots, we build ADUs that add rental income and long-term value.
Detached ADUs
Standalone backyard homes from 400 to 1,200 sq ft, designed to fit your lot and neighborhood.
Garage Conversions
Turn an underused garage into a legal, fully permitted rental in as little as 4–6 months.
Attached ADUs
Additions with private entrances — ideal for multigenerational families.
Junior ADUs
Up to 500 sq ft carved from your existing home. The most affordable way to add a unit.
Two-Story ADUs
Maximize tight LA lots with living space over a garage or a compact 2-story cottage.
Permits & Plans
In-house architects and drafters manage LADBS plan check, LADWP and Fire review.
How much does an ADU cost in Los Angeles?
Junior ADU
$90k–$160k
Garage conversion
$150k–$230k
Detached 1-bed
$220k–$320k
Detached 2-bed
$300k–$420k+
Estimates include design, engineering, permit fees and construction. Actual pricing depends on site, size and finishes.
Our 5-step ADU process
- 01
Free feasibility check
- 02
Custom design
- 03
LADBS permits
- 04
Construction
- 05
Move-in & rent
Los Angeles ADU FAQs
How much does it cost to build an ADU in Los Angeles?
Most Los Angeles ADUs cost $180k–$420k all-in. Garage conversions often start near $150k, while custom detached 2-bedroom units with hillside site work can exceed $400k.
How long does LADBS take to approve an ADU?
LADBS plan check for ADUs typically takes 8–14 weeks. Using LA's Standard Plan Program or a pre-approved plan can shorten this considerably.
How big can an ADU be in Los Angeles?
Detached ADUs can be up to 1,200 sq ft. State law guarantees at least an 800 sq ft unit with 4-foot side and rear setbacks, even on smaller LA lots.
Can I build an ADU and a junior ADU on the same LA lot?
Yes. On single-family lots, California law allows one detached ADU plus one junior ADU inside the existing home.
Do ADUs in Los Angeles require parking?
No replacement parking is required when converting a garage, and no parking is required for ADUs within half a mile of public transit — which covers most of LA.
ADU builders near Los Angeles
Get a free ADU feasibility check in Los Angeles
Tell us about your lot. We'll review zoning, setbacks and utilities and send a ballpark budget — no obligation.