Accessory dwelling unit cost — 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
The investment required for an ADU depends on your site conditions, the complexity of the design, and the materials selected for the interior. Larger units with custom features naturally shift the price higher compared to standard, compact models. Exact pricing confirmed free on the call.
Frequently asked in Berkeley
What is the cost to build an accessory dwelling unit in Berkeley?
The cost to build an accessory dwelling unit in Berkeley depends on several variables, including the size and complexity of the design, the materials chosen, and any site-specific preparation needed. Berkeley's unique zoning and building codes can also influence costs. For an accurate estimate, a licensed, insured pro familiar with Berkeley regulations will need to assess your property and project requirements. We arrange this consultation.
What are the ADU housing options in Berkeley?
What is the accessory dwelling unit permit cost in Berkeley?
What are the requirements for ADU construction in Berkeley?
What is the best ADU for my property in Berkeley?
How do I get an ADU quote in Berkeley?
What is the ADU permit process 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, West Berkeley, North Berkeley, South Berkeley, Ocean View, Claremont — and every surrounding area.
Areas we serve
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