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ADU Builders & Contractors in Sebastian, FL

Building an ADU in Sebastian? You'll find 4 licensed contractors in the area, ready to help. Sebastian's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for Sebastian

Avg. Cost/sqft

$143-$293

Permit Timeline

30-90 weeks

Max Size

1000 sqft

Setbacks

5ft sides

Top 4 ADU Contractors in Sebastian

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#1ORC SERVICES, INC

Sebastian, FL

Orc Services, Inc — licensed ADU contractor in Sebastian, FL.

View Profile📞 (772) 589-8026
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#2Renovations Plus of Indian River County LLC

Sebastian, FL

Renovations Plus of Indian River County LLC — licensed ADU contractor in Sebastian, FL.

View Profile📞 (772) 713-7699
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#3DMC HOME IMPROVEMENT, LLC

Sebastian, FL

Dmc Home Improvement, Llc — licensed ADU contractor in Sebastian, FL.

View Profile📞 (772) 299-8032
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#4Valentino & Son Construction, LLC

Sebastian, FL

Valentino & Son Construction, LLC — licensed ADU contractor in Sebastian, FL.

View Profile📞 (772) 643-1282

💰 How Much Does an ADU Cost in Sebastian?

Garage Conversion

$36,500 - $96,500

Converting existing garage to living space

Detached ADU

$93,000 - $243,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$601 - $3,101

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Sebastian

How much does it cost to build an ADU in Sebastian?▼
The average cost to build an ADU in Sebastian ranges from $93,000 to $243,000, or approximately $143 to $293 per square foot. Garage conversions typically cost $36,500 to $96,500.
How long does it take to get an ADU permit in Sebastian?▼
The ADU permit process in Sebastian 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 Sebastian?▼
In Sebastian, 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 Sebastian?▼
Sebastian 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 Sebastian?▼
No parking is required for ADUs in Sebastian 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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