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ADU Builders & Contractors in Stevenson Ranch, CA

With 24 verified ADU contractors serving Stevenson Ranch, CA, homeowners have plenty of options for their accessory dwelling unit project. Local contractors ready to help specialize in everything from design-build to permit navigation.

📊 ADU Quick Facts for Stevenson Ranch

Avg. Cost/sqft

$193-$368

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 24 ADU Contractors in Stevenson Ranch

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#1IRIANA EDWARD

Stevenson Ranch, CA

Iriana Edward — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (818) 968 3240
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#2A + CAL'S CONSTRUCTION

Stevenson Ranch, CA

A + Cal'S Construction — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction. 19+ years experience.

View Profile📞 (661) 645 9988
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#3BLACK ROCK CONSTRUCTION SERVICES INC

Stevenson Ranch, CA

Black Rock Construction Services Inc — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (323) 627 3891
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#4MEEK JASON T & ASSOC

Stevenson Ranch, CA

Meek Jason T & Assoc — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (661) 714 1034
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#5W CONTRACTING CORPORATION

Stevenson Ranch, CA

W Contracting Corporation — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (661) 212 8805
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#6GDL RENOVATIONS INC

Stevenson Ranch, CA

Gdl Renovations Inc — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction.

View Profile📞 (661) 234 1905
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#7LYNN T

Stevenson Ranch, CA

Lynn T — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (661) 644 4497
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#8XINYI WANG

Stevenson Ranch, CA

Xinyi Wang — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction.

View Profile📞 (619) 519 8110
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#9T A S F - CORP INC

Stevenson Ranch, CA

T A S F - Corp Inc — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction. 12+ years experience.

View Profile📞 (818) 389 0012
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#10SOWERS CONSTRUCTION INC

Stevenson Ranch, CA

Sowers Construction Inc — licensed ADU contractor in Stevenson Ranch, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (805) 279 4911
View All 24 Contractors →

💰 How Much Does an ADU Cost in Stevenson Ranch?

Garage Conversion

$66,500 - $126,500

Converting existing garage to living space

Detached ADU

$143,000 - $318,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,116 - $5,116

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Stevenson Ranch

How much does it cost to build an ADU in Stevenson Ranch?▼
The average cost to build an ADU in Stevenson Ranch ranges from $143,000 to $318,000, or approximately $193 to $368 per square foot. Garage conversions typically cost $66,500 to $126,500.
How long does it take to get an ADU permit in Stevenson Ranch?▼
The ADU permit process in Stevenson Ranch 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 Stevenson Ranch?▼
In Stevenson Ranch, 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 Stevenson Ranch?▼
Stevenson Ranch 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 Stevenson Ranch?▼
No parking is required for ADUs in Stevenson Ranch 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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