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ADU Builders & Contractors in Downers Grove, FL

With 1 verified ADU contractors serving Downers Grove, 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 Downers Grove

Avg. Cost/sqft

$148-$298

Permit Timeline

30-90 weeks

Max Size

1000 sqft

Setbacks

5ft sides

Top 1 ADU Contractors in Downers Grove

🏗️
#1OAKWOOD CONSTRUCTION SERVICES, INC.

Downers Grove, FL

Oakwood Construction Services, Inc. — licensed ADU contractor in Downers Grove, FL.

View Profile📞 (312) 288-9494

💰 How Much Does an ADU Cost in Downers Grove?

Garage Conversion

$39,000 - $99,000

Converting existing garage to living space

Detached ADU

$98,000 - $248,000

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 Downers Grove contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Downers Grove

How much does it cost to build an ADU in Downers Grove?▼
The average cost to build an ADU in Downers Grove ranges from $98,000 to $248,000, or approximately $148 to $298 per square foot. Garage conversions typically cost $39,000 to $99,000.
How long does it take to get an ADU permit in Downers Grove?▼
The ADU permit process in Downers Grove 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 Downers Grove?▼
In Downers Grove, 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 Downers Grove?▼
Downers Grove 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 Downers Grove?▼
No parking is required for ADUs in Downers Grove 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

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