Plumbing & HVAC contractor licenses: status across three states

Washington and Oregon license contractors at the state level: a Washington L&I registration or an Oregon Building Codes Division license can cover plumbing, heating, ventilation, air-conditioning and refrigeration, boiler and pressure piping work anywhere in the state. Vermont licenses individual plumbers (master, journeyman and special levels) through the Division of Fire Safety. The classification column is each state's own trade wording — for example Oregon's JP-Journeyman Plumber or Washington's Heating/Vent/Air-Conditioning and Refrig (HVAC/R) — so the same trade carries different labels across states.

Status is the state's own flag: a license marked active was in good standing when this page was checked, expired means the state shows it past its renewal date, and re-licensed, suspended or out-of-business flags are counted in the “other status” column above. Expiration dates are the next renewal date each state publishes. For a binding check of any single license, use the state lookup services in the sources below.

Every value on this page is fetched from the official open-data datasets listed below on 2026-09-17; nothing is estimated, typed in by hand, or copied from a third-party aggregator. Each row carries the licensee name, license number, classification, status and expiration date exactly as the state publishes them, plus the licensee's own city and county where the dataset gives them — the issuing state stays the jurisdiction. State license lookups that block scripted access are left out of this directory entirely rather than filled in with guesses, which is why only states with a machine-readable license file appear here.