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

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#1ROMERO CONSTRUCTION SERVICES

Spring Valley, CA

Romero Construction Services — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 19+ years experience.

View Profile 📞 (619) 454 3064

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#2PACIFIC PATIO INC

Spring Valley, CA

Pacific Patio Inc — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 36+ years experience.

View Profile 📞 (619) 561 9303

🏗️

#3HAMPTON R C INC A CALIFORNIA CORPORATION

Spring Valley, CA

Hampton R C Inc A California Corporation — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 49+ years experience.

View Profile 📞 (619) 846 8998

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#4S SQUARED CONSTRUCTION AND POOL CONTRACTOR

Spring Valley, CA

S Squared Construction And Pool Contractor — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 19+ years experience.

View Profile 📞 (619) 869 9657

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#5ANSELL DANA W

Spring Valley, CA

Ansell Dana W — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 35+ years experience.

View Profile 📞 (619) 697 9000

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#6HANA HOU CONSTRUCTION

Spring Valley, CA

Hana Hou Construction — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 28+ years experience.

View Profile 📞 (619) 518 8765

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#7CANALES DEMO

Spring Valley, CA

Canales Demo — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 19+ years experience.

View Profile 📞 (619) 204 2422

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#8A D F BUILDERS INC

Spring Valley, CA

A D F Builders Inc — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 18+ years experience.

View Profile 📞 (619) 921 9105

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#9URBAN REMODELING

Spring Valley, CA

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

View Profile 📞 (619) 335 7987

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#10CORONADO CONSTRUCTION

Spring Valley, CA

Coronado Construction — licensed ADU contractor in Spring Valley, CA. Detached ADU construction. 11+ years experience.

View Profile 📞 (619) 708 6072

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)

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