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ADU Builders & Contractors in Watsonville, CA

Watsonville, CA homeowners looking to build an ADU have 173 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 Watsonville starts here.

📊 ADU Quick Facts for Watsonville

Avg. Cost/sqft

$197-$372

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 173 ADU Contractors in Watsonville

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#1MARTY MARCUS HOME IMPROVEMENTS

Watsonville, CA

Marty Marcus Home Improvements — licensed ADU contractor in Watsonville, CA. Detached ADU construction. 47+ years experience.

View Profile📞 (831) 818 0514
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#2DAN DEMICELL CONSTRUCTION

Watsonville, CA

Dan Demicell Construction — licensed ADU contractor in Watsonville, CA. Detached ADU construction.

View Profile📞 (831) 588 4959
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#3ARIANA ROOFING

Watsonville, CA

Ariana Roofing — licensed ADU contractor in Watsonville, CA. Detached ADU construction. 28+ years experience.

View Profile📞 (831) 750 7044
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#4LAMBERTO'S CONSTRUCTION INC

Watsonville, CA

Lamberto'S Construction Inc — licensed ADU contractor in Watsonville, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (831) 254 5582
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#5CARVALHO CONSTRUCTION LLC

Watsonville, CA

Carvalho Construction Llc — licensed ADU contractor in Watsonville, CA. Detached ADU construction. 50+ years experience.

View Profile📞 (831) 750 8956
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#6IX CONSTRUCTION

Watsonville, CA

IX Construction — licensed ADU contractor in Watsonville, CA. Detached ADU construction. 5+ years experience.

View Profile📞 (831) 262 8017
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#7GIZDICH CONSTRUCTION REMODLING AND HOME REPAIR

Watsonville, CA

Gizdich Construction Remodling And Home Repair — licensed ADU contractor in Watsonville, CA. Detached ADU construction. 22+ years experience.

View Profile📞 (831) 801 8335
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#8GONZALES & SON CONSTRUCTION

Watsonville, CA

Gonzales & Son Construction — licensed ADU contractor in Watsonville, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (831) 761 5439
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#9ESPINO CONSTRUCTION INC

Watsonville, CA

Espino Construction Inc — licensed ADU contractor in Watsonville, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (831) 247 1195
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#10PAJARO VALLEY CONSTRUCTION

Watsonville, CA

Pajaro Valley Construction — licensed ADU contractor in Watsonville, CA. Detached ADU construction. 40+ years experience.

View Profile📞 (831) 247 2331
View All 173 Contractors →

💰 How Much Does an ADU Cost in Watsonville?

Garage Conversion

$68,500 - $128,500

Converting existing garage to living space

Detached ADU

$147,000 - $322,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,097 - $5,097

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Watsonville

How much does it cost to build an ADU in Watsonville?▼
The average cost to build an ADU in Watsonville ranges from $147,000 to $322,000, or approximately $197 to $372 per square foot. Garage conversions typically cost $68,500 to $128,500.
How long does it take to get an ADU permit in Watsonville?▼
The ADU permit process in Watsonville 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 Watsonville?▼
In Watsonville, 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 Watsonville?▼
Watsonville 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 Watsonville?▼
No parking is required for ADUs in Watsonville 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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