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ADU Builders & Contractors in Running Springs, CA

Running Springs, CA is home to 29 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Running Springs's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Running Springs

Avg. Cost/sqft

$192-$367

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 29 ADU Contractors in Running Springs

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#1BURKITT'S BUILDERS

Running Springs, CA

Burkitt'S Builders — licensed ADU contractor in Running Springs, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (909) 337 9528
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#2B R ALL AMERICAN CONSTRUCTION INC

Running Springs, CA

B R All American Construction Inc — licensed ADU contractor in Running Springs, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (909) 229 3430
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#3RIACH CONSTRUCTION

Running Springs, CA

Riach Construction — licensed ADU contractor in Running Springs, CA. Detached ADU construction. 20+ years experience.

View Profile📞 (909) 844 2725
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#4BROTHERS PLUMBING SERVICES INCORPORATED

Running Springs, CA

Brothers Plumbing Services Incorporated — licensed ADU contractor in Running Springs, CA. Detached ADU construction.

View Profile📞 (626) 203 7286
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#5NYBO RESIDENTAL

Running Springs, CA

Nybo Residental — licensed ADU contractor in Running Springs, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (909) 553 8545
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#6WEXLER CONSTRUCTION

Running Springs, CA

Wexler Construction — licensed ADU contractor in Running Springs, CA. Detached ADU construction. 26+ years experience.

View Profile📞 (310) 773 7579
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#7STEVEN'S HOME IMPROVEMENT AND GENERAL CONTRACTING

Running Springs, CA

Steven'S Home Improvement And General Contracting — licensed ADU contractor in Running Springs, CA. Detached ADU construction.

View Profile📞 (951) 208 5194
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#8KF CONSTRUCTION

Running Springs, CA

KF Construction — licensed ADU contractor in Running Springs, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (909) 202 1494
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#9TONYS CONSTRUCTION LLC

Running Springs, CA

Tonys Construction Llc — licensed ADU contractor in Running Springs, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (909) 275 4466
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#10CREATIVE WORKS CONSTRUCTION

Running Springs, CA

Creative Works Construction — licensed ADU contractor in Running Springs, CA. Detached ADU construction. 11+ years experience.

View Profile📞 (626) 203 7286
View All 29 Contractors →

💰 How Much Does an ADU Cost in Running Springs?

Garage Conversion

$66,000 - $126,000

Converting existing garage to living space

Detached ADU

$142,000 - $317,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,117 - $5,117

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Running Springs

How much does it cost to build an ADU in Running Springs?▼
The average cost to build an ADU in Running Springs ranges from $142,000 to $317,000, or approximately $192 to $367 per square foot. Garage conversions typically cost $66,000 to $126,000.
How long does it take to get an ADU permit in Running Springs?▼
The ADU permit process in Running Springs 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 Running Springs?▼
In Running Springs, 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 Running Springs?▼
Running Springs 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 Running Springs?▼
No parking is required for ADUs in Running Springs 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.

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