Active license · Verified 2026-08-25

John H Mai

Plumber · Arvada, Colorado

License number	1834
Trade	Plumber
License holder	John H Mai
Location	Arvada, CO 80006
Licensed since	1973
License expires	2027-02-28
Status	Current, Active (as of 2026-08-25)

Verify license 1834 on the official Colorado portal

What this record tells you

John H Mai holds Colorado license 1834, authorizing work as a plumber — 53 years of continuous licensure. It is one of 432 active plumber licenses in Arvada, so you have local alternatives to compare quotes against. Confirm the current status on the official state portal before signing a contract.

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This page is generated from Colorado public license records for consumer-protection purposes. John H Mai has not claimed this page, is not a sponsor, and no endorsement is implied. Always re-verify license status and insurance before hiring. Verify a Pro is a service operated by Scion Media, not affiliated with any government agency.