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ADU Builders & Contractors in Mt Hermon, CA

Building an ADU in Mt Hermon? You'll find 2 licensed contractors in the area, ready to help. Mt Hermon's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for Mt Hermon

Avg. Cost/sqft

$207-$382

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 2 ADU Contractors in Mt Hermon

🏗️
#1SWEERS CONSTRUCTION

Mt Hermon, CA

Sweers Construction — licensed ADU contractor in MT Hermon, CA. Detached ADU construction. 28+ years experience.

View Profile📞 (831) 335 5926
🏗️
#2ROBERTS MARK W CONSTRUCTION

Mt Hermon, CA

Roberts Mark W Construction — licensed ADU contractor in MT Hermon, CA. Detached ADU construction. 46+ years experience.

View Profile📞 (831) 234 8143

💰 How Much Does an ADU Cost in Mt Hermon?

Garage Conversion

$73,500 - $133,500

Converting existing garage to living space

Detached ADU

$157,000 - $332,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,116 - $5,116

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Mt Hermon

How much does it cost to build an ADU in Mt Hermon?▼
The average cost to build an ADU in Mt Hermon ranges from $157,000 to $332,000, or approximately $207 to $382 per square foot. Garage conversions typically cost $73,500 to $133,500.
How long does it take to get an ADU permit in Mt Hermon?▼
The ADU permit process in Mt Hermon 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 Mt Hermon?▼
In Mt Hermon, 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 Mt Hermon?▼
Mt Hermon 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 Mt Hermon?▼
No parking is required for ADUs in Mt Hermon 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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