ADU Contractors
Dashboard

ADU Builders & Contractors in Santa Ana, CA

Santa Ana offers pre-approved ADU plans and a dedicated FAQ resource to help homeowners navigate the permitting process in Orange County's most densely populated city.

📊 ADU Quick Facts for Santa Ana

Avg. Cost/sqft

$300-$550

Permit Timeline

4-10 weeks

Max Size

1200 sqft

Setbacks

4ft sides

View Santa Ana Planning Department →

Top 541 ADU Contractors in Santa Ana

🏗️
#1WAYNE'S CONSTRUCTION COMPANY

Santa Ana, CA

Wayne'S Construction Company — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 33+ years experience.

View Profile📞 (818) 324 5732
🏗️
#2SKYE CONSTRUCTION

Santa Ana, CA

Skye Construction — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 5+ years experience.

View Profile📞 (949) 631 7100
🏗️
#3ACE CONSTRUCTION

Santa Ana, CA

Ace Construction — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 31+ years experience.

View Profile📞 (714) 906 0390
🏗️
#4CONVERT BUILDERS CORPORATION

Santa Ana, CA

Convert Builders Corporation — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 11+ years experience.

View Profile📞 (714) 604 5552
🏗️
#5WEST HOME IMPROVEMENT

Santa Ana, CA

West Home Improvement — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 24+ years experience.

View Profile📞 (714) 222 6611
🏗️
#6HANSEN CONSTRUCTION

Santa Ana, CA

Hansen Construction — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (714) 544 1875
🏗️
#7HARDWOOD CONST

Santa Ana, CA

Hardwood Const — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 33+ years experience.

View Profile📞 (714) 547 2528
🏗️
#8KIKTAVI BUILD INC

Santa Ana, CA

Kiktavi Build Inc — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (626) 533 5260
🏗️
#9ANCHOR BUILDERS INC

Santa Ana, CA

Anchor Builders Inc — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (714) 592 5126
🏗️
#10CA COAST CONSTRUCTION

Santa Ana, CA

CA Coast Construction — licensed ADU contractor in Santa Ana, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (949) 656 5814
View All 541 Contractors →

💰 How Much Does an ADU Cost in Santa Ana?

Garage Conversion

$75,000 - $185,000

Converting existing garage to living space

Detached ADU

$150,000 - $380,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$3,000 - $12,000

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Santa Ana

How much does it cost to build an ADU in Santa Ana?▼
The average cost to build an ADU in Santa Ana ranges from $150,000 to $380,000, or approximately $300 to $550 per square foot. Garage conversions typically cost $75,000 to $185,000.
How long does it take to get an ADU permit in Santa Ana?▼
The ADU permit process in Santa Ana typically takes 4 to 10 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 Santa Ana?▼
In Santa Ana, 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 Santa Ana?▼
Santa Ana 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 Santa Ana?▼
No parking is required for ADUs in Santa Ana 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)

Ready to Build Your ADU in Santa Ana?

Get free quotes from top-rated local contractors

Find Contractors Now
← View all contractors in California