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ADU Builders & Contractors in Fleming Island, FL

With 4 verified ADU contractors serving Fleming Island, FL, homeowners have plenty of options for their accessory dwelling unit project. Local contractors ready to help specialize in everything from design-build to permit navigation.

📊 ADU Quick Facts for Fleming Island

Avg. Cost/sqft

$150-$300

Permit Timeline

30-90 weeks

Max Size

1000 sqft

Setbacks

5ft sides

Top 4 ADU Contractors in Fleming Island

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#1Bourre Construction Group LLC

Fleming Island, FL

Bourre Construction Group LLC — licensed ADU contractor in Fleming Island, FL.

View Profile📞 (904) 504-1342
🏗️
#2Carlton Construction, Inc.

Fleming Island, FL

Carlton Construction, Inc. — licensed ADU contractor in Fleming Island, FL.

View Profile📞 (904) 297-1450
🏗️
#3Bourre Construction Group LLC

Fleming Island, FL

Bourre Construction Group LLC — licensed ADU contractor in Fleming Island, FL.

View Profile📞 (904) 504-1342
🏗️
#4Carlton Construction, Inc.

Fleming Island, FL

Carlton Construction, Inc. — licensed ADU contractor in Fleming Island, FL.

View Profile📞 (904) 297-1450

💰 How Much Does an ADU Cost in Fleming Island?

Garage Conversion

$40,000 - $100,000

Converting existing garage to living space

Detached ADU

$100,000 - $250,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$608 - $3,108

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Fleming Island

How much does it cost to build an ADU in Fleming Island?▼
The average cost to build an ADU in Fleming Island ranges from $100,000 to $250,000, or approximately $150 to $300 per square foot. Garage conversions typically cost $40,000 to $100,000.
How long does it take to get an ADU permit in Fleming Island?▼
The ADU permit process in Fleming Island 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 Fleming Island?▼
In Fleming Island, 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 Fleming Island?▼
Fleming Island 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 Fleming Island?▼
No parking is required for ADUs in Fleming Island 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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