Accessory dwelling units adus — 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
Accessory dwelling units, or ADUs, are secondary residences that share a lot with a main house. These units allow you to increase your property value and utility without buying a new home. You need these when your household needs are changing and you need more flexible living space.
Frequently asked in Berkeley
Can I get a contractor for an accessory dwelling unit in San Diego?
What is the accessory dwelling unit permit cost in Berkeley?
The accessory dwelling unit permit cost in Berkeley varies based on the project's scope and complexity. Fees are set by the city and can include plan check and inspection charges. The pros can provide an estimate of these costs during your consultation. Call us to get a clearer picture of permit expenses for your ADU project.
What is the ADU cost in Berkeley?
What ADU companies are available in Berkeley?
What are the local ADU rules in Berkeley?
Can I get 24-hour ADU services in Berkeley?
Who are accessory dwelling unit builders in Berkeley?
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: Gourmet Ghetto, North Berkeley, South Berkeley, West Berkeley, Elmwood — and every surrounding area.
Areas we serve
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