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Cottage ADU

Cottage ADU

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About Us

Free consultation
Free estimate
Offers Custom Work
Your ADU from A to Z
We build customized Accessory Dwelling Units (ADUs) from start-to-finish. From initial design to permits to construction, we are California's #1 Custom ADU provider for detached, attached, and garage conversion ADUs. Contact us today for a Free, No Obligation Consultation and Estimate. to learn more about how we can help build your no-hassle ADU. Our vision We believe in a world where the neighborhoods with the most opportunity are both livable for existing residents and accessible for newcomers. Like most California residents, we’ve experienced the pain of the housing crisis: first-hand as renters trying to find a decent place in a nice neighborhood, our friends and siblings moving out of state, and our parents figuring out how to afford to age in place. We're here to help you build room for more.

Services Provided

Accessory Dwelling Units (ADUs), Modular Home Construction, Sustainable Design, Tiny House Construction

Areas Served

Greater Los Angeles Area, San Fernando Valley, San Diego Area, North County San Diego, SF Bay Area - Peninsula, SF Bay Area - East Bay, SF Bay Area - South Bay, SF Bay Area - North Bay, San Francisco


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17 Projects

Inspiration for a contemporary home design remodel in San Francisco

Brand New Guest Cottage in Midtown Palo Alto for Local Residents

Palo Alto, CA
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Business Details

Business Name

Cottage ADU

Phone Number

(628) 265-8006



Greater San Francisco Bay Area, CA 94103

Typical Job Cost

$100,000 - 400,000

A-to-Z ADU design, permit, and construction cost varies depending on project size and complexity. Contact us today or visit to learn more about how we can build your no-hassle, customized, stick-built ADU from start to finish!


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5 Ideabooks

#1 Custom ADU Provider
Cottage ADU
Average rating: 5 out of 5 stars

Frequently Asked Questions