What is the maximum ADU size allowed in Spring Valley?

Detached ADUs in Spring Valley can be up to 1200 square feet.

ADU Builders & Contractors in Spring Valley, CA

Q: How much does it cost to build an ADU in Spring Valley?

The average cost ranges from $143,000 to $318,000, or $193-368 per square foot.

Q: How long does it take to get an ADU permit in Spring Valley?

The permit process typically takes 60 to 120 weeks in Spring Valley.

Spring Valley, CA homeowners looking to build an ADU have 175 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 Spring Valley starts here.

📊 ADU Quick Facts for Spring Valley

Avg. Cost/sqft

$193-$368

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 175 ADU Contractors in Spring Valley

🏗️

#1WILSON C E CORP

Spring Valley, CA

Wilson C E Corp — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 41+ years experience.

View Profile 📞 (619) 464 6721

🏗️

#2SAN DIEGO DECKS AND PATIOS

Spring Valley, CA

San Diego Decks And Patios — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 21+ years experience.

View Profile 📞 (619) 415 3531

🏗️

#3AYALA PRO BUILDERS INC

Spring Valley, CA

Ayala Pro Builders Inc — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 7+ years experience.

View Profile 📞 (619) 381 8771

🏗️

#4ORIOL CONSTRUCTION

Spring Valley, CA

Oriol Construction — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 34+ years experience.

View Profile 📞 (619) 466 0322

🏗️

#5I P BUILDERS

Spring Valley, CA

I P Builders — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 19+ years experience.

View Profile 📞 (619) 534 9477

🏗️

#6D H REMODELING

Spring Valley, CA

D H Remodeling — licensed ADU contractor in Spring Valley, CA. Detached ADU construction.

View Profile 📞 (619) 873 5655

🏗️

#7NENN MANFRED HOME IMPROVEMENT

Spring Valley, CA

Nenn Manfred Home Improvement — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 35+ years experience.

View Profile 📞 (619) 846 9227

🏗️

#83 D ENVIRONMENTAL INC

Spring Valley, CA

3 D Environmental Inc — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 27+ years experience.

View Profile 📞 (619) 546 0105

🏗️

#9GARCIA BROTHERS CONSTRUCTION COMPANY THE

Spring Valley, CA

Garcia Brothers Construction Company The — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 21+ years experience.

View Profile 📞 (619) 577 8800

🏗️

#10OMG DESIGN BUILD

Spring Valley, CA

Omg Design Build — licensed ADU contractor in Spring Valley, CA. Detached ADU construction.

View Profile 📞 (619) 309 5901

View All 175 Contractors →

💰 How Much Does an ADU Cost in Spring Valley?

Garage Conversion

$66,500 - $126,500

Converting existing garage to living space

Detached ADU

$143,000 - $318,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,112 - $5,112

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Spring Valley

How much does it cost to build an ADU in Spring Valley?▼

The average cost to build an ADU in Spring Valley ranges from $143,000 to $318,000, or approximately $193 to $368 per square foot. Garage conversions typically cost $66,500 to $126,500.

How long does it take to get an ADU permit in Spring Valley?▼

The ADU permit process in Spring Valley 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 Spring Valley?▼

In Spring Valley, 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 Spring Valley?▼

Spring Valley 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 Spring Valley?▼

No parking is required for ADUs in Spring Valley 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)

Ready to Build Your ADU in Spring Valley?

Get free quotes from top-rated local contractors

Find Contractors Now

← View all contractors in California