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ADU Builders & Contractors in Angwin, CA

Angwin, CA homeowners looking to build an ADU have 16 licensed contractors to choose from, ready to help. Whether you're planning a garage conversion, detached ADU, or junior ADU, finding the right contractor in Angwin starts here.

📊 ADU Quick Facts for Angwin

Avg. Cost/sqft

$195-$370

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 16 ADU Contractors in Angwin

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#1HAMILTON DOUGLAS A

Angwin, CA

Hamilton Douglas A — licensed ADU contractor in Angwin, CA. Detached ADU construction. 48+ years experience.

View Profile📞 (707) 326 1753
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#2BOWEN BRIAN CONSTRUCTION COMPANY

Angwin, CA

Bowen Brian Construction Company — licensed ADU contractor in Angwin, CA. Detached ADU construction. 33+ years experience.

View Profile📞 (707) 486 2727
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#3TRAVIS CONSTRUCTION

Angwin, CA

Travis Construction — licensed ADU contractor in Angwin, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (707) 738 3742
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#4JEFFREY CONSTRUCTION

Angwin, CA

Jeffrey Construction — licensed ADU contractor in Angwin, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (707) 363 6123
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#5DILLON SETH CONSTRUCTION

Angwin, CA

Dillon Seth Construction — licensed ADU contractor in Angwin, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (707) 287 3048
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#6PRIEST RON CONSTRUCTION INC

Angwin, CA

Priest Ron Construction Inc — licensed ADU contractor in Angwin, CA. Detached ADU construction. 25+ years experience.

View Profile📞 (707) 732 8000
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#7KLINGBEIL PLUMBING

Angwin, CA

Klingbeil Plumbing — licensed ADU contractor in Angwin, CA. Detached ADU construction. 54+ years experience.

View Profile📞 (707) 965 3900
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#8BUNCH CONSTRUCTION INC

Angwin, CA

Bunch Construction Inc — licensed ADU contractor in Angwin, CA. Detached ADU construction. 23+ years experience.

View Profile📞 (707) 965 3548
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#9BUILTWORKS INDUSTRIES

Angwin, CA

Builtworks Industries — licensed ADU contractor in Angwin, CA. Detached ADU construction. 35+ years experience.

View Profile📞 (707) 310 1824
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#10BEHRENS CONSTRUCTION

Angwin, CA

Behrens Construction — licensed ADU contractor in Angwin, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (707) 337 2396
View All 16 Contractors →

💰 How Much Does an ADU Cost in Angwin?

Garage Conversion

$67,500 - $127,500

Converting existing garage to living space

Detached ADU

$145,000 - $320,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,110 - $5,110

Plan check, permits, utility connections

* Costs vary based on size, finishes, site conditions, and contractor. Get quotes from multiple Angwin contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Angwin

How much does it cost to build an ADU in Angwin?▼
The average cost to build an ADU in Angwin ranges from $145,000 to $320,000, or approximately $195 to $370 per square foot. Garage conversions typically cost $67,500 to $127,500.
How long does it take to get an ADU permit in Angwin?▼
The ADU permit process in Angwin typically takes 60 to 120 weeks. California law requires cities to approve or deny ADU permits within 60 days of receiving a complete application.
What are the ADU size limits in Angwin?▼
In Angwin, detached ADUs can be up to 1200 square feet. Attached ADUs are limited to 50% of the primary dwelling or 1,200 sqft, whichever is less. Junior ADUs (JADUs) are limited to 500 sqft and must be within the existing home.
What is the setback requirement for ADUs in Angwin?▼
Angwin requires 4-foot setbacks from side property lines and 4-foot setbacks from rear property lines for new ADU construction. Converted structures (like existing garages) may maintain their current setbacks.
Do I need to provide parking for my ADU in Angwin?▼
No parking is required for ADUs in Angwin if your property is within half a mile of public transit, in a historic district, part of an existing multi-family building, or if the ADU is a garage conversion. Otherwise, one space may be required.

Also See ADU Contractors In

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