What is the maximum ADU size allowed in Highland?

Detached ADUs in Highland can be up to 1200 square feet.

ADU Builders & Contractors in Highland, CA

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

The average cost ranges from $152,000 to $327,000, or $202-377 per square foot.

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

The permit process typically takes 60 to 120 weeks in Highland.

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

🏗️

#1G & R CUSTOM BUILDERS INC

Highland, CA

G & R Custom Builders Inc — licensed ADU contractor in Highland, CA. Detached ADU construction. 6+ years experience.

View Profile 📞 (909) 289 9316

🏗️

#2A1 PROPERTY PRESERVATION LLC

Highland, CA

A1 Property Preservation Llc — licensed ADU contractor in Highland, CA. Detached ADU construction.

View Profile 📞 (951) 321 0319

🏗️

#3ANDIS CONSTRUCTION CO

Highland, CA

Andis Construction CO — licensed ADU contractor in Highland, CA. Detached ADU construction. 21+ years experience.

View Profile 📞 (909) 888 3500

🏗️

#4HERITAGE CONSTRUCTION CA LLC

Highland, CA

Heritage Construction CA Llc — licensed ADU contractor in Highland, CA. Detached ADU construction.

View Profile 📞 (909) 568 1717

🏗️

#5DIFFER CONSTRUCTION INC

Highland, CA

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

View Profile 📞 (909) 252 2342

🏗️

#6AV HOMES AND GENERAL CONSTRUCTION INC

Highland, CA

AV Homes And General Construction Inc — licensed ADU contractor in Highland, CA. Detached ADU construction.

View Profile 📞 (909) 871 5877

🏗️

#7MICHAEL RODOCKER CONSTRUCTION

Highland, CA

Michael Rodocker Construction — licensed ADU contractor in Highland, CA. Detached ADU construction.

View Profile 📞 (909) 907 5532

🏗️

#8WATER WISE LANDSCAPE SOLUTIONS

Highland, CA

Water Wise Landscape Solutions — licensed ADU contractor in Highland, CA. Detached ADU construction. 15+ years experience.

View Profile 📞 (909) 208 6740

🏗️

#9NEW HORIZON NELS GENERAL CONSTRUCTION THE

Highland, CA

New Horizon Nels General Construction The — licensed ADU contractor in Highland, CA. Detached ADU construction.

View Profile 📞 (909) 495 6553

🏗️

#10DICKEY CONSTRUCTION

Highland, CA

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

View Profile 📞 (909) 501 1091

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

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 Highland?

Get free quotes from top-rated local contractors

Find Contractors Now

← View all contractors in California