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ADU Builders & Contractors in Callahan, FL

Callahan, FL homeowners looking to build an ADU have 3 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 Callahan starts here.

📊 ADU Quick Facts for Callahan

Avg. Cost/sqft

$147-$297

Permit Timeline

30-90 weeks

Max Size

1000 sqft

Setbacks

5ft sides

Top 3 ADU Contractors in Callahan

🏗️
#1Florida Coastal Construction Services Inc

Callahan, FL

Florida Coastal Construction Services Inc — licensed ADU contractor in Callahan, FL.

View Profile📞 (904) 955-7663
🏗️
#2Anchor Development Group Inc

Callahan, FL

Anchor Development Group Inc — licensed ADU contractor in Callahan, FL.

View Profile📞 (904) 762-7360
🏗️
#3Florida Coastal Construction Services Inc

Callahan, FL

Florida Coastal Construction Services Inc — licensed ADU contractor in Callahan, FL.

View Profile📞 (904) 955-7663

💰 How Much Does an ADU Cost in Callahan?

Garage Conversion

$38,500 - $98,500

Converting existing garage to living space

Detached ADU

$97,000 - $247,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$597 - $3,097

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Callahan

How much does it cost to build an ADU in Callahan?▼
The average cost to build an ADU in Callahan ranges from $97,000 to $247,000, or approximately $147 to $297 per square foot. Garage conversions typically cost $38,500 to $98,500.
How long does it take to get an ADU permit in Callahan?▼
The ADU permit process in Callahan typically takes 30 to 90 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 Callahan?▼
In Callahan, detached ADUs can be up to 1000 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 Callahan?▼
Callahan requires 5-foot setbacks from side property lines and 5-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 Callahan?▼
No parking is required for ADUs in Callahan 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

Miami (224)Tampa (223)Jacksonville (121)Orlando (117)Naples (110)Sarasota (103)Fort Myers (91)Cape Coral (83)

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