What is the maximum ADU size allowed in Fallbrook?

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

ADU Builders & Contractors in Fallbrook, CA

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

The average cost ranges from $150,000 to $325,000, or $200-375 per square foot.

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

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

Fallbrook, CA homeowners looking to build an ADU have 236 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 Fallbrook starts here.

📊 ADU Quick Facts for Fallbrook

Avg. Cost/sqft

$200-$375

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 236 ADU Contractors in Fallbrook

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#1HUDAK ROBERT

Fallbrook, CA

Hudak Robert — licensed ADU contractor in Fallbrook, CA. Detached ADU construction. 15+ years experience.

View Profile 📞 (760) 689 9049

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#2TERRY JACK L CONSTRUCTION

Fallbrook, CA

Terry Jack L Construction — licensed ADU contractor in Fallbrook, CA. Detached ADU construction. 42+ years experience.

View Profile 📞 (760) 802 1900

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#3ASSEMBLE BUILD INC

Fallbrook, CA

Assemble Build Inc — licensed ADU contractor in Fallbrook, CA. Detached ADU construction. 6+ years experience.

View Profile 📞 (858) 866 6958

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#4PAULA KIM GENERAL CONTRACTOR

Fallbrook, CA

Paula Kim General Contractor — licensed ADU contractor in Fallbrook, CA. Detached ADU construction. 45+ years experience.

View Profile 📞 (310) 704 5260

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#5FIEDLER JOHN

Fallbrook, CA

Fiedler John — licensed ADU contractor in Fallbrook, CA. Detached ADU construction. 44+ years experience.

View Profile 📞 (760) 723 4797

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#6ALL IN ONE QUALITY CONSTRUCTION INC

Fallbrook, CA

All IN One Quality Construction Inc — licensed ADU contractor in Fallbrook, CA. Detached ADU construction. 9+ years experience.

View Profile 📞 (951) 294 0872

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#7FASSINO CONSTRUCTION

Fallbrook, CA

Fassino Construction — licensed ADU contractor in Fallbrook, CA. Detached ADU construction. 22+ years experience.

View Profile 📞 (760) 415 7191

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#8AMOS MATTHEW

Fallbrook, CA

Amos Matthew — licensed ADU contractor in Fallbrook, CA. Detached ADU construction.

View Profile 📞 (760) 801 1605

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#9FELTON JAMES J CONSTRUCTION

Fallbrook, CA

Felton James J Construction — licensed ADU contractor in Fallbrook, CA. Detached ADU construction. 37+ years experience.

View Profile 📞 (760) 458 5817

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#10ARMES CONSTRUCTION

Fallbrook, CA

Armes Construction — licensed ADU contractor in Fallbrook, CA. Detached ADU construction. 6+ years experience.

View Profile 📞 (760) 607 8613

View All 236 Contractors →

💰 How Much Does an ADU Cost in Fallbrook?

Garage Conversion

$70,000 - $130,000

Converting existing garage to living space

Detached ADU

$150,000 - $325,000

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 Fallbrook contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Fallbrook

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

The average cost to build an ADU in Fallbrook ranges from $150,000 to $325,000, or approximately $200 to $375 per square foot. Garage conversions typically cost $70,000 to $130,000.

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

The ADU permit process in Fallbrook 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 Fallbrook?▼

In Fallbrook, 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 Fallbrook?▼

Fallbrook 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 Fallbrook?▼

No parking is required for ADUs in Fallbrook 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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