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ADU Builders & Contractors in Lancaster, CA

With 274 verified ADU contractors serving Lancaster, CA, homeowners have plenty of options for their accessory dwelling unit project. Local contractors ready to help specialize in everything from design-build to permit navigation.

📊 ADU Quick Facts for Lancaster

Avg. Cost/sqft

$206-$381

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 274 ADU Contractors in Lancaster

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#1GOLD STONE BUILDERS INC

Lancaster, CA

Gold Stone Builders Inc — licensed ADU contractor in Lancaster, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (818) 880 7402
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#2M A G BUILDERS

Lancaster, CA

M A G Builders — licensed ADU contractor in Lancaster, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (661) 400 1891
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#3STEVENSON DERRENDA MASHELL INC

Lancaster, CA

Stevenson Derrenda Mashell Inc — licensed ADU contractor in Lancaster, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (661) 810 4172
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#4UNITED HOME CONSTRUCTION INC

Lancaster, CA

United Home Construction Inc — licensed ADU contractor in Lancaster, CA. Detached ADU construction. 12+ years experience.

View Profile📞 (818) 231 5590
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#5BROOKS AND SOUZA CONSTRUCTION INC

Lancaster, CA

Brooks And Souza Construction Inc — licensed ADU contractor in Lancaster, CA. Detached ADU construction.

View Profile📞 (661) 878 5837
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#6LCM BUILDERS

Lancaster, CA

Lcm Builders — licensed ADU contractor in Lancaster, CA. Detached ADU construction.

View Profile📞 (661) 886 9101
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#7URECA CONSTRUCTION CO

Lancaster, CA

Ureca Construction CO — licensed ADU contractor in Lancaster, CA. Detached ADU construction. 40+ years experience.

View Profile📞 (213) 321 5255
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#8MYLES PAINTING

Lancaster, CA

Myles Painting — licensed ADU contractor in Lancaster, CA. Detached ADU construction. 47+ years experience.

View Profile📞 (661) 945 3322
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#9CHAPARRAL CONSTRUCTION

Lancaster, CA

Chaparral Construction — licensed ADU contractor in Lancaster, CA. Detached ADU construction. 38+ years experience.

View Profile📞 (661) 618 1860
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#10FLIP IT ALL CONSTRUCTION INC

Lancaster, CA

Flip IT All Construction Inc — licensed ADU contractor in Lancaster, CA. Detached ADU construction.

View Profile📞 (661) 974 1868
View All 274 Contractors →

💰 How Much Does an ADU Cost in Lancaster?

Garage Conversion

$73,000 - $133,000

Converting existing garage to living space

Detached ADU

$156,000 - $331,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,097 - $5,097

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Lancaster

How much does it cost to build an ADU in Lancaster?▼
The average cost to build an ADU in Lancaster ranges from $156,000 to $331,000, or approximately $206 to $381 per square foot. Garage conversions typically cost $73,000 to $133,000.
How long does it take to get an ADU permit in Lancaster?▼
The ADU permit process in Lancaster 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 Lancaster?▼
In Lancaster, 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 Lancaster?▼
Lancaster 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 Lancaster?▼
No parking is required for ADUs in Lancaster 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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