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ADU Builders & Contractors in Laguna Niguel, CA

Laguna Niguel, CA homeowners looking to build an ADU have 203 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 Laguna Niguel starts here.

📊 ADU Quick Facts for Laguna Niguel

Avg. Cost/sqft

$206-$381

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 203 ADU Contractors in Laguna Niguel

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#1DAY CONSTRUCTION

Laguna Niguel, CA

Day Construction — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction.

View Profile📞 (713) 444 7880
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#2SENIK MIND LLC

Laguna Niguel, CA

Senik Mind Llc — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction.

View Profile📞 (949) 444 6331
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#3MIKE'S COASTAL REMODELING

Laguna Niguel, CA

Mike'S Coastal Remodeling — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (949) 291 7519
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#4RILEY CONSTRUCTION

Laguna Niguel, CA

Riley Construction — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (949) 275 3468
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#5DOBBS CONSTRUCTION

Laguna Niguel, CA

Dobbs Construction — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction. 27+ years experience.

View Profile📞 (949) 735 0638
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#6BARTA CONSTRUCTION

Laguna Niguel, CA

Barta Construction — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction. 20+ years experience.

View Profile📞 (949) 533 9252
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#7NAULT R J CONSTRUCTION

Laguna Niguel, CA

Nault R J Construction — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (949) 246 2501
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#8ELGIN DEAN CONSTRUCTION

Laguna Niguel, CA

Elgin Dean Construction — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction.

View Profile📞 (323) 608 9162
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#9CONTREX INC

Laguna Niguel, CA

Contrex Inc — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (714) 420 1806
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#10RAV CO ENGINEERING INC

Laguna Niguel, CA

Rav CO Engineering Inc — licensed ADU contractor in Laguna Niguel, CA. Detached ADU construction. 23+ years experience.

View Profile📞 (949) 338 4320
View All 203 Contractors →

💰 How Much Does an ADU Cost in Laguna Niguel?

Garage Conversion

$73,000 - $133,000

Converting existing garage to living space

Detached ADU

$156,000 - $331,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,097 - $5,097

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Laguna Niguel

How much does it cost to build an ADU in Laguna Niguel?▼
The average cost to build an ADU in Laguna Niguel ranges from $156,000 to $331,000, or approximately $206 to $381 per square foot. Garage conversions typically cost $73,000 to $133,000.
How long does it take to get an ADU permit in Laguna Niguel?▼
The ADU permit process in Laguna Niguel 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 Laguna Niguel?▼
In Laguna Niguel, 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 Laguna Niguel?▼
Laguna Niguel 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 Laguna Niguel?▼
No parking is required for ADUs in Laguna Niguel 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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