ADU Builders & Contractors in Lennox, CA

Lennox, CA homeowners looking to build an ADU have 3 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 Lennox starts here.

📊 ADU Quick Facts for Lennox

Avg. Cost/sqft

$206-$381

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 3 ADU Contractors in Lennox

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Lennox, CA

A G Construction Inglelwood — licensed ADU contractor in Lennox, CA. Detached ADU construction. 22+ years experience.

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Lennox, CA

Bueno Modesto Alberto — licensed ADU contractor in Lennox, CA. Detached ADU construction. 40+ years experience.

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Lennox, CA

Skas James — licensed ADU contractor in Lennox, CA. Detached ADU construction. 50+ years experience.

💰 How Much Does an ADU Cost in Lennox?

Garage Conversion

$73,000 - $133,000

Converting existing garage to living space

Detached ADU

$156,000 - $331,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,101 - $5,101

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Lennox

How much does it cost to build an ADU in Lennox?
The average cost to build an ADU in Lennox ranges from $156,000 to $331,000, or approximately $206 to $381 per square foot. Garage conversions typically cost $73,000 to $133,000.
How long does it take to get an ADU permit in Lennox?
The ADU permit process in Lennox 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 Lennox?
In Lennox, 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 Lennox?
Lennox 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 Lennox?
No parking is required for ADUs in Lennox 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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