What is the maximum ADU size allowed in Oak Park?

Detached ADUs in Oak Park can be up to 1200 square feet.

ADU Builders & Contractors in Oak Park, CA

Q: How much does it cost to build an ADU in Oak Park?

The average cost ranges from $159,000 to $334,000, or $209-384 per square foot.

Q: How long does it take to get an ADU permit in Oak Park?

The permit process typically takes 60 to 120 weeks in Oak Park.

With 36 verified ADU contractors serving Oak Park, 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 Oak Park

Avg. Cost/sqft

$209-$384

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 36 ADU Contractors in Oak Park

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#1TEKK CONSTRUCTION

Oak Park, CA

Tekk Construction — licensed ADU contractor in Oak Park, CA. Detached ADU construction. 7+ years experience.

View Profile 📞 (818) 429 3588

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#2BAILEY CONSTRUCTION

Oak Park, CA

Bailey Construction — licensed ADU contractor in Oak Park, CA. Detached ADU construction. 32+ years experience.

View Profile 📞 (805) 797 2435

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#3DECOLIGHT

Oak Park, CA

Decolight — licensed ADU contractor in Oak Park, CA. Detached ADU construction. 20+ years experience.

View Profile 📞 (877) 332 6544

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#4MORGAN MADE CONSTRUCTION

Oak Park, CA

Morgan Made Construction — licensed ADU contractor in Oak Park, CA. Detached ADU construction. 9+ years experience.

View Profile 📞 (818) 516 8400

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#5SHORE CONSTRUCTION & DEVELOPMENT

Oak Park, CA

Shore Construction & Development — licensed ADU contractor in Oak Park, CA. Detached ADU construction. 5+ years experience.

View Profile 📞 (818) 259 8830

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#6GUTH DAVID CONSTRUCTION

Oak Park, CA

Guth David Construction — licensed ADU contractor in Oak Park, CA. Detached ADU construction. 43+ years experience.

View Profile 📞 (818) 706 3616

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#7JONES RICHARD COLVILLE

Oak Park, CA

Jones Richard Colville — licensed ADU contractor in Oak Park, CA. Detached ADU construction. 32+ years experience.

View Profile 📞 (818) 419 8517

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#8MIA TESSA CORP

Oak Park, CA

Mia Tessa Corp — licensed ADU contractor in Oak Park, CA. Detached ADU construction.

View Profile 📞 (818) 442 8877

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#9ORI OHANA CONSTRUCTION

Oak Park, CA

Ori Ohana Construction — licensed ADU contractor in Oak Park, CA. Detached ADU construction.

View Profile 📞 (818) 284 7000

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#10MANASSEH BUILDING GROUP INC

Oak Park, CA

Manasseh Building Group Inc — licensed ADU contractor in Oak Park, CA. Detached ADU construction. 23+ years experience.

View Profile 📞 (818) 416 4193

View All 36 Contractors →

💰 How Much Does an ADU Cost in Oak Park?

Garage Conversion

$74,500 - $134,500

Converting existing garage to living space

Detached ADU

$159,000 - $334,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,097 - $5,097

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Oak Park

How much does it cost to build an ADU in Oak Park?▼

The average cost to build an ADU in Oak Park ranges from $159,000 to $334,000, or approximately $209 to $384 per square foot. Garage conversions typically cost $74,500 to $134,500.

How long does it take to get an ADU permit in Oak Park?▼

The ADU permit process in Oak Park 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 Oak Park?▼

In Oak Park, 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 Oak Park?▼

Oak Park 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 Oak Park?▼

No parking is required for ADUs in Oak Park 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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