Compare adu construction estimates in San Bernardino, CA
Free adu construction quotes in San Bernardino, California. Typical range $154,500 – $309,000.
Low
$154,500
Average
$231,800
High
$309,000
San Bernardino crews quote about $260 – $515 per square foot.
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What drives adu construction prices in San Bernardino
Local labor, permitting and climate move San Bernardino prices away from the national average.
Labor market
Some of the most affordable licensed labor in Southern California.
Permits
County and city permits apply to most exterior projects.
Climate
High summer heat and occasional wildfire exposure affect material choice.
How to compare San Bernardino quotes
- Collect three written quotes. Anything under $115,875 usually has scope missing.
- Compare line items — materials, labor, permits, disposal — not just the total.
- Confirm license, insurance and workmanship warranty length before you sign.
- Ask what triggers a change order and how it gets priced.
San Bernardino questions
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