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ADU & new-home builds in Berkeley.
Independent construction project management for Berkeley homeowners — competitively bid, tracked in real time, and delivered for up to 10% less than your best builder offer.
Last updated: June 2026
Local know-how, on your side.
Berkeley's progressive housing policies and tight, often small lots make ADUs an attractive way to add space or income. Conversions and compact detached units are both common across Berkeley's neighborhoods.
Permitting in Berkeley: Berkeley reviews ADUs through its Planning Department in line with California ADU law. Small lots, mature trees, and hillside parcels are common local factors, so a careful feasibility review of setbacks and access pays off before design.
Whatever your Berkeley lot allows, we scope it honestly, put the trades out to competitive bid, and manage the build from permit to keys — so you capture the value for up to 10% less than a markup contractor would charge.
Typical Bay Area ADU cost ranges.
General 2026 market estimates — your project is scoped and bid on its own.
A detached ADU generally runs $250K–$450K, a garage conversion $120K–$250K, and a junior ADU $75K–$150K — about $250–$450 per square foot. We competitively bid each trade and target a delivered cost up to 10% below your best builder offer. Full detail in our ADU cost guide.
Managed, not marked up — in Berkeley.
- Competitive trade bidding so you never overpay for Berkeley labor or materials.
- Real-time dashboard — budget, schedule, and quality, any time.
- One accountable manager from first estimate to final walkthrough.
- Local permitting know-how to keep your Berkeley project moving.
Berkeley ADU FAQ.
Do small Berkeley lots limit ADUs?
Not necessarily — compact detached units, attached additions, and garage conversions all work on smaller Berkeley lots. Feasibility confirms what fits your specific parcel.
Are JADUs common in Berkeley?
Junior ADUs carved from existing home space are a cost-effective option on tighter Berkeley lots, and we'll scope whether a JADU or full ADU makes more sense.
Building in Berkeley?
Send us your lot details and any bid you've received. We'll show you what's possible — and what you'd save.
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