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ADU Builders & Contractors in Barstow, CA

Building an ADU in Barstow? You'll find 21 licensed contractors in the area, ready to help. Barstow's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for Barstow

Avg. Cost/sqft

$196-$371

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 21 ADU Contractors in Barstow

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#1GEE JASON H

Barstow, CA

Gee Jason H — licensed ADU contractor in Barstow, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (760) 256 8497
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#2M A R CONSTRUCTION SERVICES

Barstow, CA

M A R Construction Services — licensed ADU contractor in Barstow, CA. Detached ADU construction. 30+ years experience.

View Profile📞 (760) 267 6861
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#3GEE JOSEPH D ENTERPRISES

Barstow, CA

Gee Joseph D Enterprises — licensed ADU contractor in Barstow, CA. Detached ADU construction. 59+ years experience.

View Profile📞 (760) 256 8497
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#4SIEMBAB & SONS CONSTRUCTION INC

Barstow, CA

Siembab & Sons Construction Inc — licensed ADU contractor in Barstow, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (760) 256 6900
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#5BROWN H S CONSTRUCTION INC

Barstow, CA

Brown H S Construction Inc — licensed ADU contractor in Barstow, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (760) 267 3113
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#6HELMER WILLIAM J GENERAL ENG CONTRACTOR INC

Barstow, CA

Helmer William J General Eng Contractor Inc — licensed ADU contractor in Barstow, CA. Detached ADU construction. 49+ years experience.

View Profile📞 (760) 252 2422
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#7K D M BUILDING & CONSTRUCTION

Barstow, CA

K D M Building & Construction — licensed ADU contractor in Barstow, CA. Detached ADU construction.

View Profile📞 (760) 810 3630
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#8LINEBAUGH CONSTRUCTION

Barstow, CA

Linebaugh Construction — licensed ADU contractor in Barstow, CA. Detached ADU construction. 30+ years experience.

View Profile📞 (760) 267 0069
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#9ROSS CONSTRUCTION

Barstow, CA

Ross Construction — licensed ADU contractor in Barstow, CA. Detached ADU construction. 23+ years experience.

View Profile📞 (760) 447 2562
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#10DENNIS CONSTRUCTION SERVICE

Barstow, CA

Dennis Construction Service — licensed ADU contractor in Barstow, CA. Detached ADU construction. 20+ years experience.

View Profile📞 (760) 490 3053
View All 21 Contractors →

💰 How Much Does an ADU Cost in Barstow?

Garage Conversion

$68,000 - $128,000

Converting existing garage to living space

Detached ADU

$146,000 - $321,000

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 Barstow contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Barstow

How much does it cost to build an ADU in Barstow?▼
The average cost to build an ADU in Barstow ranges from $146,000 to $321,000, or approximately $196 to $371 per square foot. Garage conversions typically cost $68,000 to $128,000.
How long does it take to get an ADU permit in Barstow?▼
The ADU permit process in Barstow 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 Barstow?▼
In Barstow, 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 Barstow?▼
Barstow 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 Barstow?▼
No parking is required for ADUs in Barstow 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

Los Angeles (3215)San Diego (2582)San Francisco (2170)Sacramento (1551)Riverside (925)Fresno (904)Anaheim (784)Irvine (760)

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