What is the maximum ADU size allowed in Longboat Key?

Detached ADUs in Longboat Key can be up to 1000 square feet.

ADU Builders & Contractors in Longboat Key, FL

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

The average cost ranges from $106,000 to $256,000, or $156-306 per square foot.

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

The permit process typically takes 30 to 90 weeks in Longboat Key.

Longboat Key, FL is home to 4 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Longboat Key's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Longboat Key

Avg. Cost/sqft

$156-$306

Permit Timeline

30-90 weeks

Max Size

1000 sqft

Setbacks

5ft sides

Top 4 ADU Contractors in Longboat Key

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#1A-Tech Construction LLC

Longboat Key, FL

A-Tech Construction LLC — licensed ADU contractor in Longboat Key, FL.

View Profile 📞 (941) 807-2880

🏗️

#2West Florida Contractors inc

Longboat Key, FL

West Florida Contractors inc — licensed ADU contractor in Longboat Key, FL.

View Profile 📞 (941) 284-1777

🏗️

#3FULLER GROUP CONSTRUCTION LLC

Longboat Key, FL

Fuller Group Construction Llc — licensed ADU contractor in Longboat Key, FL.

View Profile 📞 (941) 961-3100

🏗️

#4A-Tech Construction LLC

Longboat Key, FL

A-Tech Construction LLC — licensed ADU contractor in Longboat Key, FL.

View Profile 📞 (941) 807-2880

💰 How Much Does an ADU Cost in Longboat Key?

Garage Conversion

$43,000 - $103,000

Converting existing garage to living space

Detached ADU

$106,000 - $256,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$611 - $3,111

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Longboat Key

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

The average cost to build an ADU in Longboat Key ranges from $106,000 to $256,000, or approximately $156 to $306 per square foot. Garage conversions typically cost $43,000 to $103,000.

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

The ADU permit process in Longboat Key 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 Longboat Key?▼

In Longboat Key, 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 Longboat Key?▼

Longboat Key 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 Longboat Key?▼

No parking is required for ADUs in Longboat Key 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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