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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Colton, CA

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

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Colton, CA

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

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Colton, CA

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

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Colton, CA

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

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Colton, CA

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

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Colton, CA

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

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Colton, CA

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

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Colton, CA

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

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Colton, CA

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

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Colton, CA

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

💰 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.

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