What is the maximum ADU size allowed in Alhambra?

Detached ADUs in Alhambra can be up to 1200 square feet.

ADU Builders & Contractors in Alhambra, CA

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

The average cost ranges from $145,000 to $320,000, or $195-370 per square foot.

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

The permit process typically takes 60 to 120 weeks in Alhambra.

Alhambra, CA homeowners looking to build an ADU have 147 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 Alhambra starts here.

📊 ADU Quick Facts for Alhambra

Avg. Cost/sqft

$195-$370

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 147 ADU Contractors in Alhambra

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#1ZHANG JEFF ASSOCIATES INC

Alhambra, CA

Zhang Jeff Associates Inc — licensed ADU contractor in Alhambra, CA. Detached ADU construction. 15+ years experience.

View Profile 📞 (626) 379 2307

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#2HAOJ CONSTRUCTION CORP

Alhambra, CA

Haoj Construction Corp — licensed ADU contractor in Alhambra, CA. Detached ADU construction.

View Profile 📞 (626) 679 2722

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#3NHAN TIFFANY MY HANH

Alhambra, CA

Nhan Tiffany MY Hanh — licensed ADU contractor in Alhambra, CA. Detached ADU construction. 20+ years experience.

View Profile 📞 (626) 688 7695

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#4LI DOROTHY

Alhambra, CA

LI Dorothy — licensed ADU contractor in Alhambra, CA. Detached ADU construction.

View Profile 📞 (626) 417 8199

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#5OUBO INC

Alhambra, CA

Oubo Inc — licensed ADU contractor in Alhambra, CA. Detached ADU construction.

View Profile 📞 (626) 831 5977

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#6TOP DOWN CONSTRUCTION INC

Alhambra, CA

Top Down Construction Inc — licensed ADU contractor in Alhambra, CA. Detached ADU construction.

View Profile 📞 (323) 926 7113

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#7A&E CONSTRUCTION GROUP

Alhambra, CA

A&E Construction Group — licensed ADU contractor in Alhambra, CA. Detached ADU construction.

View Profile 📞 (818) 928 2881

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#8JIAN ANTHONY

Alhambra, CA

Jian Anthony — licensed ADU contractor in Alhambra, CA. Detached ADU construction.

View Profile 📞 (626) 328 3773

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#9F2 CONSTRUCTION INC

Alhambra, CA

F2 Construction Inc — licensed ADU contractor in Alhambra, CA. Detached ADU construction.

View Profile 📞 (626) 354 0988

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#10RAMZEE SERVICES

Alhambra, CA

Ramzee Services — licensed ADU contractor in Alhambra, CA. Detached ADU construction.

View Profile 📞 (562) 676 7549

View All 147 Contractors →

💰 How Much Does an ADU Cost in Alhambra?

Garage Conversion

$67,500 - $127,500

Converting existing garage to living space

Detached ADU

$145,000 - $320,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,108 - $5,108

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Alhambra

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

The average cost to build an ADU in Alhambra ranges from $145,000 to $320,000, or approximately $195 to $370 per square foot. Garage conversions typically cost $67,500 to $127,500.

How long does it take to get an ADU permit in Alhambra?▼

The ADU permit process in Alhambra 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 Alhambra?▼

In Alhambra, 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 Alhambra?▼

Alhambra 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 Alhambra?▼

No parking is required for ADUs in Alhambra 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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