Does Berkeley always require design review for ADUs?

No — state law's ministerial approval applies to compliant ADU projects. Where review is triggered, it's usually because of objective standards we can design around at concept.

Are Berkeley ADUs much more expensive than Oakland?

Slightly — typically 5–10% above Oakland equivalents, mostly driven by finish expectations and the city's more deliberate review pace.

Bay desk · Berkeley · Alameda County

Berkeley ADU Builder.

design review, craftsman city.

Berkeley ADU projects run through City of Berkeley Planning & Permits. Berkeley takes design seriously — many parcels carry neighborhood compatibility expectations, and the city's review process tends to be more deliberate than neighboring East Bay cities.

Licensed California contractor · CSLB #1098432 · Bay Area desk · City of Berkeley Planning & Permits

Begin a Berkeley project →← Back to Bay Area desk

We deliver ADUs and renovations across North Berkeley, Elmwood, Claremont, Westbrae, Thousand Oaks, and the Berkeley Hills — with the craftsman-compatible documentation Berkeley reviewers expect.

Berkeley · Market snapshot

What the Berkeley ADU math actually looks like.

Permit timeline: 5–7 months
1BR ADU rent (Berkeley): $2,600–$3,500/mo
Typical project cost: $340K–$540K

Berkeley permit notes · City of Berkeley Planning & Permits

What we resolve before drawings begin.

01
Design review nuance
Most Berkeley ADUs avoid full design review under state ministerial standards, but craftsman-compatible material and massing choices help everything move faster.
02
Berkeley hillside parcels
Berkeley Hills parcels carry geotech and engineered foundation rules. Site access logistics also factor into construction cost.
03
Mature trees and root protection
Berkeley protects mature trees. We site ADUs to avoid root zones and pull tree permits when proximity is unavoidable.

Berkeley neighborhoods we serve

North Berkeley
Elmwood
Claremont
Westbrae
Thousand Oaks
Berkeley Hills

Berkeley services we deliver.

All Bay Area services →

Other Bay Area cities we serve.

Berkeley · ADU FAQ

Questions Berkeley homeowners ask first.

Start a Berkeley ADU brief. We'll confirm parcel conditions, tree and design considerations, and a fixed-scope contract.

Does Berkeley always require design review for ADUs?
No — state law's ministerial approval applies to compliant ADU projects. Where review is triggered, it's usually because of objective standards we can design around at concept.
Are Berkeley ADUs much more expensive than Oakland?
Slightly — typically 5–10% above Oakland equivalents, mostly driven by finish expectations and the city's more deliberate review pace.

Begin

Begin your projectin twenty minutes.

A short feasibility review of your lot — what you can build, roughly what it costs, and how long it will take. Free of charge. No sales call afterwards unless you ask for one.

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About ADU work in Berkeley