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ADU Builders & Contractors in Winnetka, CA

With 146 verified ADU contractors serving Winnetka, CA, 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 Winnetka

Avg. Cost/sqft

$197-$372

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 146 ADU Contractors in Winnetka

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#1ANCHOR CONSULTING ENGINEERS

Winnetka, CA

Anchor Consulting Engineers — licensed ADU contractor in Winnetka, CA. Detached ADU construction.

View Profile📞 (818) 300 6480
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#2BENHAMO DAVID

Winnetka, CA

Benhamo David — licensed ADU contractor in Winnetka, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (818) 274 9844
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#3MARTILLOS GENERAL CONSTRUCTION CO

Winnetka, CA

Martillos General Construction CO — licensed ADU contractor in Winnetka, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (818) 378 8338
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#4NOAH CONSTRUCTION & DESIGN INC

Winnetka, CA

Noah Construction & Design Inc — licensed ADU contractor in Winnetka, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (818) 642 8846
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#5MEYERHOFF KIP JOSEPH

Winnetka, CA

Meyerhoff Kip Joseph — licensed ADU contractor in Winnetka, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (818) 692 3927
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#6NUECALI CONSTRUCTION DESIGN & DEVELOPMENT INC

Winnetka, CA

Nuecali Construction Design & Development Inc — licensed ADU contractor in Winnetka, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (818) 427 1700
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#7DOVE CONTRACTORS INC

Winnetka, CA

Dove Contractors Inc — licensed ADU contractor in Winnetka, CA. Detached ADU construction. 14+ years experience.

View Profile📞 (310) 455 4281
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#8ESCOBEDO RESTORATION

Winnetka, CA

Escobedo Restoration — licensed ADU contractor in Winnetka, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (818) 914 4422
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#9AIG PLUMBING & CONSTRUCTION INC

Winnetka, CA

Aig Plumbing & Construction Inc — licensed ADU contractor in Winnetka, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (818) 335 7432
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#10JULIAN'S GENERAL CONSTRUCTION INC

Winnetka, CA

Julian'S General Construction Inc — licensed ADU contractor in Winnetka, CA. Detached ADU construction. 33+ years experience.

View Profile📞 (818) 266 3629
View All 146 Contractors →

💰 How Much Does an ADU Cost in Winnetka?

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

$1,105 - $5,105

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Winnetka

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