Adu permit — 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
Getting an ADU permit is the legal process of obtaining local government approval for your building project. You cannot legally construct or occupy an ADU without this documentation. You need this service before any construction begins to ensure your build meets building codes and safety regulations.
Frequently asked in Berkeley
What is the cost of an accessory dwelling unit in Berkeley?
What ADU services are available in Berkeley?
How do I get an ADU quote in Berkeley?
Where can I find an accessory dwelling unit near me in Berkeley?
What are the rules for an accessory dwelling unit permit in Berkeley?
What is affordable accessory dwelling unit construction in Berkeley?
Affordable accessory dwelling unit construction in Berkeley often involves optimizing design and material choices. Smaller footprints and simpler layouts can reduce costs. Prefabricated options may also be more budget-friendly. Discussing your budget with a licensed pro during your quote will help identify cost-effective solutions.
What is a backyard accessory dwelling unit 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
Browse by state, then city.