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ADU Builders & Contractors in Oceanside, CA

Oceanside, CA is home to 411 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Oceanside's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Oceanside

Avg. Cost/sqft

$209-$384

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 411 ADU Contractors in Oceanside

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#1CROUCH ROBERT JON

Oceanside, CA

Crouch Robert Jon — licensed ADU contractor in Oceanside, CA. Detached ADU construction. 32+ years experience.

View Profile📞 (760) 724 0104
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#2AVALOS OSCAR ARMANDO

Oceanside, CA

Avalos Oscar Armando — licensed ADU contractor in Oceanside, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (760) 717 0272
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#3SILVER STONE

Oceanside, CA

Silver Stone — licensed ADU contractor in Oceanside, CA. Detached ADU construction. 11+ years experience.

View Profile📞 (619) 867 3389
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#4DEES CHRISTOPHER

Oceanside, CA

Dees Christopher — licensed ADU contractor in Oceanside, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (760) 917 0717
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#5WINTER CONSTRUCTION

Oceanside, CA

Winter Construction — licensed ADU contractor in Oceanside, CA. Detached ADU construction. 26+ years experience.

View Profile📞 (760) 419 6970
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#6KLR BUILD LLC

Oceanside, CA

Klr Build Llc — licensed ADU contractor in Oceanside, CA. Detached ADU construction.

View Profile📞 (619) 739 1135
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#7REAL ESTATE RENOVATIONS INC

Oceanside, CA

Real Estate Renovations Inc — licensed ADU contractor in Oceanside, CA. Detached ADU construction. 39+ years experience.

View Profile📞 (760) 433 5419
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#8MCLAY CONTRACTING

Oceanside, CA

Mclay Contracting — licensed ADU contractor in Oceanside, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (760) 208 5399
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#9NL CUSTOM BUILDING

Oceanside, CA

NL Custom Building — licensed ADU contractor in Oceanside, CA. Detached ADU construction.

View Profile📞 (760) 893 6598
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#10OCEANSIDE CONSTRUCTION CO

Oceanside, CA

Oceanside Construction CO — licensed ADU contractor in Oceanside, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (760) 594 1676
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💰 How Much Does an ADU Cost in Oceanside?

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

$1,099 - $5,099

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Oceanside

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

Los Angeles (3215)San Diego (2582)San Francisco (2170)Sacramento (1551)Riverside (925)Fresno (904)Anaheim (784)Irvine (760)

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