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ADU Builders & Contractors in Holliston, FL

Holliston, FL homeowners looking to build an ADU have 2 licensed contractors to choose from, ready to help. Whether you're planning a garage conversion, detached ADU, or junior ADU, finding the right contractor in Holliston starts here.

📊 ADU Quick Facts for Holliston

Avg. Cost/sqft

$152-$302

Permit Timeline

30-90 weeks

Max Size

1000 sqft

Setbacks

5ft sides

Top 2 ADU Contractors in Holliston

🏗️
#1APPENA PROPERTIES, LLC

Holliston, FL

Appena Properties, Llc — licensed ADU contractor in Holliston, FL.

View Profile📞 (774) 615-9861
🏗️
#2APPENA PROPERTIES, LLC

Holliston, FL

Appena Properties, Llc — licensed ADU contractor in Holliston, FL.

View Profile📞 (774) 615-9861

💰 How Much Does an ADU Cost in Holliston?

Garage Conversion

$41,000 - $101,000

Converting existing garage to living space

Detached ADU

$102,000 - $252,000

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 Holliston contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Holliston

How much does it cost to build an ADU in Holliston?▼
The average cost to build an ADU in Holliston ranges from $102,000 to $252,000, or approximately $152 to $302 per square foot. Garage conversions typically cost $41,000 to $101,000.
How long does it take to get an ADU permit in Holliston?▼
The ADU permit process in Holliston 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 Holliston?▼
In Holliston, 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 Holliston?▼
Holliston 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 Holliston?▼
No parking is required for ADUs in Holliston 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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