AirProHQ
License verified · CSLB

U S T Testing Services Inc

1635 CHALLENGE DRIVE
+1 925-288-8944
Verification ledger

What we checked, and what we didn't

Checked against the register at build time (Oct 31, 2026).
California contractor licenseCalifornia Contractors State License Board (CSLB) · number 866797. Matched to this business on name.Verified
Business contactphone on file.On file
Public reviewsNo public review profile in our data. License-register listings often have none — ask for two recent local references instead.None found
Insurance & bondingNot checked by AirProHQ. Ask for the certificate of insurance before work starts — the state requires cover to hold the license, but we don't see the policy.Ask them
WorkmanshipNot inspected. A license says who is allowed to do the job, not how well it was done.Ask for references
Checked against the register at build time (Oct 31, 2026). Confirm it yourself — about thirty seconds. See our full verification methodology.Open the official lookup
About

U S T Testing Services Inc, in brief

U S T Testing Services Inc operates as an HVAC contractor at 1635 CHALLENGE DRIVE. Its CSLB license, number 866797, is on the register. We list another contractor just 0.6 mi from this one.

HVAC contractor
Questions about this contractor

Before you call U S T Testing Services Inc

01

Has U S T Testing Services Inc's contractor license been verified?

Confirmed — the CSLB register carries license 866797 for this business. See it yourself via the official license lookup.

Sources: California Contractors State License Board (CSLB) register.Report a correction
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