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ADU Builders & Contractors in Colton, CA

Colton, CA is home to 67 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Colton's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Colton

Avg. Cost/sqft

$197-$372

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 67 ADU Contractors in Colton

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#1A & A GENERAL CONTRACTING COMPANY

Colton, CA

A & A General Contracting Company — licensed ADU contractor in Colton, CA. Detached ADU construction. 28+ years experience.

View Profile📞 (909) 685 5363
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#2HOME IMPROVEMENT SOLUTIONS

Colton, CA

Home Improvement Solutions — licensed ADU contractor in Colton, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (909) 709 5373
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#3EDWIN CONSTRUCTION INC

Colton, CA

Edwin Construction Inc — licensed ADU contractor in Colton, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (925) 207 8647
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#4SO CAL CUSTOM INC

Colton, CA

SO Cal Custom Inc — licensed ADU contractor in Colton, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (909) 793 4444
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#5J G M CONSTRUCTION

Colton, CA

J G M Construction — licensed ADU contractor in Colton, CA. Detached ADU construction. 14+ years experience.

View Profile📞 (909) 329 0989
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#6HOPKINS DAVID

Colton, CA

Hopkins David — licensed ADU contractor in Colton, CA. Detached ADU construction. 19+ years experience.

View Profile📞 (909) 522 5281
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#7RAGGEDY ANDY'S HOME REPAIR

Colton, CA

Raggedy Andy'S Home Repair — licensed ADU contractor in Colton, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (909) 800 2061
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#8ESCOBAR ROSA E

Colton, CA

Escobar Rosa E — licensed ADU contractor in Colton, CA. Detached ADU construction.

View Profile📞 (909) 520 1982
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#9R - MAC CONSTRUCTION INC

Colton, CA

R - Mac Construction Inc — licensed ADU contractor in Colton, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (909) 800 3345
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#10CISNEROS CONTRACTORS

Colton, CA

Cisneros Contractors — licensed ADU contractor in Colton, CA. Detached ADU construction.

View Profile📞 (909) 289 3952
View All 67 Contractors →

💰 How Much Does an ADU Cost in Colton?

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

$1,111 - $5,111

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Colton

How much does it cost to build an ADU in Colton?▼
The average cost to build an ADU in Colton 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 Colton?▼
The ADU permit process in Colton 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 Colton?▼
In Colton, 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 Colton?▼
Colton 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 Colton?▼
No parking is required for ADUs in Colton 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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