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ADU Builders & Contractors in La Costa, CA

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

📊 ADU Quick Facts for La Costa

Avg. Cost/sqft

$206-$381

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 1 ADU Contractors in La Costa

🏗️
#1HENNING NEAL CONSTRUCTION

La Costa, CA

Henning Neal Construction — licensed ADU contractor in LA Costa, CA. Detached ADU construction. 28+ years experience.

View Profile📞 (760) 685 1321

💰 How Much Does an ADU Cost in La Costa?

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

$1,097 - $5,097

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in La Costa

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