Costs and fees
Guides on this topic, newest first.
- How much an ADU costs in Los Angeles in 2026
There is no single price. The only independent statewide survey of ADU owners, from UC Berkeley's Terner Center in 2021, found a median build cost of $150,000, about $250 per square foot, with 37 percent of ADUs under $100,000 and 71 percent under $200,000. Prices have risen since, and 2026 bids in Los Angeles depend on the kind of ADU, its size and the site. City fees are a small share: no impact fees up to 750 sq ft and no school fees up to 500 sq ft.
Los Angeles County · Updated November 6, 2026 · Vivienda
- Converting a garage into an ADU in Los Angeles
A garage conversion is the least disruptive ADU. State law lets you turn the existing space into a home, plus up to 150 sq ft for an entry, with no setback for the existing building, no replacement parking and no new utility connection fee. LADBS's conversion bulletin (P/BC 2026-150, revised August 13, 2026) says what the garage must meet: sound footings, a sealed or new slab, a 7 ft ceiling, a 3 ft wide entry door, an escape window in each bedroom, heating, a kitchen, a bathroom and its own electrical panel.
Los Angeles County · Updated November 6, 2026 · Vivienda
- How Los Angeles pre-approved ADU plans work
LADBS checks a firm's plan against the building, residential, green and energy codes once, so when you use it the city reviews only how it sits on your property: zoning, the foundation for your soil and clearances. ADUCheck lists 30 standard ADU plans from the LADBS program, from 280 to 1,200 sq ft, plus three free county plans for unincorporated areas. You buy a private firm's plan set from the firm; the county-owned plans are free.
Los Angeles County · Updated November 6, 2026 · Vivienda