Keystone Mechanical LLC
Verified against CSLB on · View on CSLB
License details
- License number
- 1028816
- Classifications
- License term on file
- July 10, 2017 – March 31, 2028
Business
- (408) 529 0311 (CSLB public record)
- 1051 LINDA DRIVE, Campbell, CA 95008Santa Clara County
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What to check next
Frequently asked questions
Is Keystone Mechanical LLC licensed in California?
Yes. Keystone Mechanical LLC holds an active California state contractor license (CSLB #1028816), verified against the CSLB public record on August 4, 2026.
What is Keystone Mechanical LLC's CSLB license number?
Keystone Mechanical LLC's California contractor license number is 1028816. Look that number up with the CSLB "Check a License" tool to confirm its current status against the public record yourself.
What kind of work is Keystone Mechanical LLC licensed for?
Keystone Mechanical LLC is classified under Warm-Air Heating, Ventilating and Air-Conditioning (C-20) by the CSLB.
How do I verify Keystone Mechanical LLC's license myself?
Look up license #1028816 with the CSLB "Check a License" tool and compare the status, bond, and workers' compensation details against what's shown on this page. This page reflects the CSLB public record as of August 4, 2026.
Verify it yourself: How to verify a California contractor license · Look up #1028816 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.