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ADU Builders & Contractors in Montrose, CA

Montrose, CA is home to 44 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Montrose's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Montrose

Avg. Cost/sqft

$207-$382

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 44 ADU Contractors in Montrose

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#1INTERSCAPE CONSTRUCTION INC

Montrose, CA

Interscape Construction Inc — licensed ADU contractor in Montrose, CA. Detached ADU construction. 39+ years experience.

View Profile📞 (818) 249 1324
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#2FICREST CONSTRUCTION INC

Montrose, CA

Ficrest Construction Inc — licensed ADU contractor in Montrose, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (818) 383 9316
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#3A R A CONSTRUCTION

Montrose, CA

A R A Construction — licensed ADU contractor in Montrose, CA. Detached ADU construction. 27+ years experience.

View Profile📞 (415) 999 1245
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#4NOBLE GENERAL CONSTRUCTION INC

Montrose, CA

Noble General Construction Inc — licensed ADU contractor in Montrose, CA. Detached ADU construction.

View Profile📞 (818) 666 7100
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#5KOAM CONSTRUCTION INC

Montrose, CA

Koam Construction Inc — licensed ADU contractor in Montrose, CA. Detached ADU construction. 31+ years experience.

View Profile📞 (213) 380 4588
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#6MALEKIAN ALEN

Montrose, CA

Malekian Alen — licensed ADU contractor in Montrose, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (818) 249 5522
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#7ANDERSON CONSTRUCTION

Montrose, CA

Anderson Construction — licensed ADU contractor in Montrose, CA. Detached ADU construction.

View Profile📞 (818) 621 7279
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#8FIRST AMERICAN SOLAR ELECTRICAL

Montrose, CA

First American Solar Electrical — licensed ADU contractor in Montrose, CA. Detached ADU construction. 10+ years experience.

View Profile📞 (877) 535 9992
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#9K D K DESIGN BUILDER

Montrose, CA

K D K Design Builder — licensed ADU contractor in Montrose, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (213) 308 6559
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#10RENEW ALTADENA LLC

Montrose, CA

Renew Altadena Llc — licensed ADU contractor in Montrose, CA. Detached ADU construction.

View Profile📞 (626) 657 3639
View All 44 Contractors →

💰 How Much Does an ADU Cost in Montrose?

Garage Conversion

$73,500 - $133,500

Converting existing garage to living space

Detached ADU

$157,000 - $332,000

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 Montrose contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Montrose

How much does it cost to build an ADU in Montrose?▼
The average cost to build an ADU in Montrose ranges from $157,000 to $332,000, or approximately $207 to $382 per square foot. Garage conversions typically cost $73,500 to $133,500.
How long does it take to get an ADU permit in Montrose?▼
The ADU permit process in Montrose 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 Montrose?▼
In Montrose, 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 Montrose?▼
Montrose 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 Montrose?▼
No parking is required for ADUs in Montrose 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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