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ADU Builders & Contractors in Cornell, CA

Cornell, CA is home to 1 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Cornell's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Cornell

Avg. Cost/sqft

$197-$372

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 1 ADU Contractors in Cornell

🏗️
#1NEW THEME INC

Cornell, CA

New Theme Inc — licensed ADU contractor in Cornell, CA. Detached ADU construction. 20+ years experience.

View Profile📞 (323) 932 9866

💰 How Much Does an ADU Cost in Cornell?

Garage Conversion

$68,500 - $128,500

Converting existing garage to living space

Detached ADU

$147,000 - $322,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,111 - $5,111

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Cornell

How much does it cost to build an ADU in Cornell?▼
The average cost to build an ADU in Cornell ranges from $147,000 to $322,000, or approximately $197 to $372 per square foot. Garage conversions typically cost $68,500 to $128,500.
How long does it take to get an ADU permit in Cornell?▼
The ADU permit process in Cornell typically takes 60 to 120 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 Cornell?▼
In Cornell, detached ADUs can be up to 1200 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 Cornell?▼
Cornell requires 4-foot setbacks from side property lines and 4-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 Cornell?▼
No parking is required for ADUs in Cornell 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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