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ADU Builders & Contractors in Marco Island, FL

With 2 verified ADU contractors serving Marco 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 Marco Island

Avg. Cost/sqft

$157-$307

Permit Timeline

30-90 weeks

Max Size

1000 sqft

Setbacks

5ft sides

Top 2 ADU Contractors in Marco Island

🏗️
#1CFC Construction LLC

Marco Island, FL

CFC Construction LLC — licensed ADU contractor in Marco Island, FL.

View Profile📞 (978) 423-1621
🏗️
#2Scarpa Property Services, LLC

Marco Island, FL

Scarpa Property Services, LLC — licensed ADU contractor in Marco Island, FL.

View Profile📞 (239) 272-3098

💰 How Much Does an ADU Cost in Marco Island?

Garage Conversion

$43,500 - $103,500

Converting existing garage to living space

Detached ADU

$107,000 - $257,000

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 Marco Island contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Marco Island

How much does it cost to build an ADU in Marco Island?▼
The average cost to build an ADU in Marco Island ranges from $107,000 to $257,000, or approximately $157 to $307 per square foot. Garage conversions typically cost $43,500 to $103,500.
How long does it take to get an ADU permit in Marco Island?▼
The ADU permit process in Marco 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 Marco Island?▼
In Marco 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 Marco Island?▼
Marco 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 Marco Island?▼
No parking is required for ADUs in Marco 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

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

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