ADU Builders & Contractors in Saint Johns, FL

With 5 verified ADU contractors serving Saint Johns, 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 Saint Johns

Avg. Cost/sqft

$143-$293

Permit Timeline

30-90 weeks

Max Size

1000 sqft

Setbacks

5ft sides

Top 5 ADU Contractors in Saint Johns

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Saint Johns, FL

BG Construction And Remodel LLC — licensed ADU contractor in Saint Johns, FL.

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Saint Johns, FL

Creative Construction Contractors Llc — licensed ADU contractor in saint johns, FL.

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Saint Johns, FL

BG Construction And Remodel LLC — licensed ADU contractor in Saint Johns, FL.

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Saint Johns, FL

Creative Construction Contractors Llc — licensed ADU contractor in saint johns, FL.

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Saint Johns, FL

Sunbelt Homes and Roofing LLC — licensed ADU contractor in Saint Johns, FL.

💰 How Much Does an ADU Cost in Saint Johns?

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

$597 - $3,097

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Saint Johns

How much does it cost to build an ADU in Saint Johns?
The average cost to build an ADU in Saint Johns 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 Saint Johns?
The ADU permit process in Saint Johns 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 Saint Johns?
In Saint Johns, 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 Saint Johns?
Saint Johns 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 Saint Johns?
No parking is required for ADUs in Saint Johns 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.

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