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ADU Builders & Contractors in Sylmar, CA

Sylmar, CA homeowners looking to build an ADU have 229 licensed contractors to choose from, ready to help. Whether you're planning a garage conversion, detached ADU, or junior ADU, finding the right contractor in Sylmar starts here.

📊 ADU Quick Facts for Sylmar

Avg. Cost/sqft

$193-$368

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 229 ADU Contractors in Sylmar

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#1AKOPI BUILDERS

Sylmar, CA

Akopi Builders — licensed ADU contractor in Sylmar, CA. Detached ADU construction.

View Profile📞 (818) 913 4108
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#2MACIAS CONSTRUCTION

Sylmar, CA

Macias Construction — licensed ADU contractor in Sylmar, CA. Detached ADU construction. 10+ years experience.

View Profile📞 (818) 833 8600
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#3ELLIOTT J D CONSTRUCTION

Sylmar, CA

Elliott J D Construction — licensed ADU contractor in Sylmar, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (818) 516 7554
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#4SOLIS RAUL

Sylmar, CA

Solis Raul — licensed ADU contractor in Sylmar, CA. Detached ADU construction. 5+ years experience.

View Profile📞 (818) 744 7030
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#5J VALLES CONSTRUCTION

Sylmar, CA

J Valles Construction — licensed ADU contractor in Sylmar, CA. Detached ADU construction.

View Profile📞 (818) 534 7539
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#6CAL WEST CONTRACTING INC

Sylmar, CA

Cal West Contracting Inc — licensed ADU contractor in Sylmar, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (213) 216 4255
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#7NPI CONCRETE

Sylmar, CA

Npi Concrete — licensed ADU contractor in Sylmar, CA. Detached ADU construction. 14+ years experience.

View Profile📞 (818) 367 9340
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#8PLUMBING BROTHERS & ROOTER SERVICES INC THE

Sylmar, CA

Plumbing Brothers & Rooter Services Inc The — licensed ADU contractor in Sylmar, CA. Detached ADU construction. 12+ years experience.

View Profile📞 (818) 255 5700
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#9HARTMAN CONSTRUCTION

Sylmar, CA

Hartman Construction — licensed ADU contractor in Sylmar, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (310) 922 3246
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#10STRUCTURAL CONCRETE SPECIALISTS INC

Sylmar, CA

Structural Concrete Specialists Inc — licensed ADU contractor in Sylmar, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (818) 356 3637
View All 229 Contractors →

💰 How Much Does an ADU Cost in Sylmar?

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

$1,121 - $5,121

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Sylmar

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