What is the maximum ADU size allowed in Los Alamitos?

Detached ADUs in Los Alamitos can be up to 1200 square feet.

ADU Builders & Contractors in Los Alamitos, CA

Q: How much does it cost to build an ADU in Los Alamitos?

The average cost ranges from $156,000 to $331,000, or $206-381 per square foot.

Q: How long does it take to get an ADU permit in Los Alamitos?

The permit process typically takes 60 to 120 weeks in Los Alamitos.

Los Alamitos, CA homeowners looking to build an ADU have 98 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 Los Alamitos starts here.

📊 ADU Quick Facts for Los Alamitos

Avg. Cost/sqft

$206-$381

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 98 ADU Contractors in Los Alamitos

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#1NUWAY REMODELING INC

Los Alamitos, CA

Nuway Remodeling Inc — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction. 5+ years experience.

View Profile 📞 (949) 993 6080

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#2BCS RESTORATION

Los Alamitos, CA

Bcs Restoration — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction. 8+ years experience.

View Profile 📞 (877) 711 7004

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#3OGAN CONSTRUCTION INC

Los Alamitos, CA

Ogan Construction Inc — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction. 9+ years experience.

View Profile 📞 (562) 596 7757

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#4GENE MASSE CONSTRUCTION INC

Los Alamitos, CA

Gene Masse Construction Inc — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction.

View Profile 📞 (562) 481 6115

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#5STORIE AND SEVERSON CONSTRUCTION INC

Los Alamitos, CA

Storie And Severson Construction Inc — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction. 7+ years experience.

View Profile 📞 (661) 234 9429

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#6BML CONSTRUCTION INC

Los Alamitos, CA

Bml Construction Inc — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction. 35+ years experience.

View Profile 📞 (562) 547 6831

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#7PRECISION BUILDERS

Los Alamitos, CA

Precision Builders — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction. 14+ years experience.

View Profile 📞 (949) 293 4194

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#8AMERICA - 1 PLUMBING

Los Alamitos, CA

America - 1 Plumbing — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction. 27+ years experience.

View Profile 📞 (562) 431 7475

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#9G J M ENGINEERING INC

Los Alamitos, CA

G J M Engineering Inc — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction. 17+ years experience.

View Profile 📞 (213) 977 9100

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#10BULKIN YAKOV

Los Alamitos, CA

Bulkin Yakov — licensed ADU contractor in Los Alamitos, CA. Detached ADU construction. 11+ years experience.

View Profile 📞 (714) 660 6011

View All 98 Contractors →

💰 How Much Does an ADU Cost in Los Alamitos?

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

$1,111 - $5,111

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Los Alamitos

How much does it cost to build an ADU in Los Alamitos?▼

The average cost to build an ADU in Los Alamitos 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 Los Alamitos?▼

The ADU permit process in Los Alamitos 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 Los Alamitos?▼

In Los Alamitos, 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 Los Alamitos?▼

Los Alamitos 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 Los Alamitos?▼

No parking is required for ADUs in Los Alamitos 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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