24 hour adu — Berkeley, CA
Last updated: September 24, 2026
What affects the price
Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.
About this service
Frequently asked in Berkeley
What are the rules for accessory dwelling units in New Hampshire?
Can I get a detached accessory dwelling unit in Berkeley?
Where can I find an affordable accessory dwelling unit?
What ADU permit is needed in Berkeley?
What accessory dwelling unit companies are in Berkeley?
Can I find an accessory dwelling unit for rent in Berkeley?
What types of accessory dwelling unit homes are available?
Also serving nearby: Richmond · Oakland · Daly City · Vallejo · Concord
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Berkeley — population 118,962; about 11,403 residents per square mile across 10.4 sq mi. ZIP codes covered include 94701, 94702, 94703, 94704, 94705, 94707, 94708, 94709.
Neighborhoods served in Berkeley: North Berkeley, South Berkeley, West Berkeley, Downtown Berkeley, Gourmet Ghetto — and every surrounding area.
Areas we serve
Browse by state, then city.