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ADU Builders & Contractors in Highland, CA

Highland, CA is home to 74 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Highland's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Highland

Avg. Cost/sqft

$202-$377

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 74 ADU Contractors in Highland

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#1HOOK BRIAN CONSTRUCTION INC

Highland, CA

Hook Brian Construction Inc — licensed ADU contractor in Highland, CA. Detached ADU construction.

View Profile📞 (909) 269 2705
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#2JOSEPHSON MARK CONSTRUCTION INC

Highland, CA

Josephson Mark Construction Inc — licensed ADU contractor in Highland, CA. Detached ADU construction. 28+ years experience.

View Profile📞 (951) 323 1367
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#3COLD ZONE HEATING & AIR CONDITIONING INC

Highland, CA

Cold Zone Heating & Air Conditioning Inc — licensed ADU contractor in Highland, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (909) 224 8590
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#4TECH CONTRACTING GROUP INC

Highland, CA

Tech Contracting Group Inc — licensed ADU contractor in Highland, CA. Detached ADU construction. 5+ years experience.

View Profile📞 (562) 235 6442
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#5ALLIANCE CONSTRUCTION GROUP INC

Highland, CA

Alliance Construction Group Inc — licensed ADU contractor in Highland, CA. Detached ADU construction. 14+ years experience.

View Profile📞 (909) 261 8999
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#6J B RENOVATIONS

Highland, CA

J B Renovations — licensed ADU contractor in Highland, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (909) 278 9776
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#7EGS CONTRACTORS INC

Highland, CA

Egs Contractors Inc — licensed ADU contractor in Highland, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (909) 991 7630
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#8BOGH MICHAEL G

Highland, CA

Bogh Michael G — licensed ADU contractor in Highland, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (909) 841 4137
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#9MATICH CORPORATION

Highland, CA

Matich Corporation — licensed ADU contractor in Highland, CA. Detached ADU construction. 71+ years experience.

View Profile📞 (909) 382 7400
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#10SHAMROCK SOLUTIONS CONSTRUCTION INC

Highland, CA

Shamrock Solutions Construction Inc — licensed ADU contractor in Highland, CA. Detached ADU construction.

View Profile📞 (909) 725 0901
View All 74 Contractors →

💰 How Much Does an ADU Cost in Highland?

Garage Conversion

$71,000 - $131,000

Converting existing garage to living space

Detached ADU

$152,000 - $327,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,105 - $5,105

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Highland

How much does it cost to build an ADU in Highland?▼
The average cost to build an ADU in Highland ranges from $152,000 to $327,000, or approximately $202 to $377 per square foot. Garage conversions typically cost $71,000 to $131,000.
How long does it take to get an ADU permit in Highland?▼
The ADU permit process in Highland 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 Highland?▼
In Highland, 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 Highland?▼
Highland 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 Highland?▼
No parking is required for ADUs in Highland 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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