ADU Contractors
Dashboard

ADU Builders & Contractors in Mission Viejo, CA

Mission Viejo, CA is home to 298 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Mission Viejo's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Mission Viejo

Avg. Cost/sqft

$207-$382

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 298 ADU Contractors in Mission Viejo

🏗️
#1AT HOME LIVING SOLUTIONS

Mission Viejo, CA

AT Home Living Solutions — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction. 19+ years experience.

View Profile📞 (949) 348 0188
🏗️
#2A C R BUILDERS INC

Mission Viejo, CA

A C R Builders Inc — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (949) 713 3266
🏗️
#3BAUER CONSTRUCTION CO

Mission Viejo, CA

Bauer Construction CO — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction. 38+ years experience.

View Profile📞 (949) 370 0386
🏗️
#4LANGE CONSTRUCTION

Mission Viejo, CA

Lange Construction — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction. 19+ years experience.

View Profile📞 (949) 370 5821
🏗️
#5SUNCOAST REMODELING

Mission Viejo, CA

Suncoast Remodeling — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (949) 332 0344
🏗️
#6BUILDER 1 CONSTRUCTION INC

Mission Viejo, CA

Builder 1 Construction Inc — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction.

View Profile📞 (949) 605 9418
🏗️
#7SPIVEY MARK A CONSTRUCTION CO

Mission Viejo, CA

Spivey Mark A Construction CO — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (949) 292 5834
🏗️
#8EGNER JAMES F

Mission Viejo, CA

Egner James F — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (949) 584 9239
🏗️
#9R S P HOLDINGS INC

Mission Viejo, CA

R S P Holdings Inc — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (949) 699 6831
🏗️
#102 BY 4 CONSTRUCTION COMPANY

Mission Viejo, CA

2 BY 4 Construction Company — licensed ADU contractor in Mission Viejo, CA. Detached ADU construction. 19+ years experience.

View Profile📞 (714) 791 6381
View All 298 Contractors →

💰 How Much Does an ADU Cost in Mission Viejo?

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

$1,105 - $5,105

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Mission Viejo

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

Get free quotes from top-rated local contractors

Find Contractors Now
← View all contractors in California