Occupation directory
Trade licenses by occupation
Choose an occupation to compare licensing requirements across U.S. states. Coverage is expanded only after an official source has been checked.
BTBackflow TesterBackflow assembly tester credentials and renewal rules.→
EElectricianElectrical contractor, journeyman and specialty-license paths.→
FAFire Alarm TechnicianFire-alarm installation, certification and registration paths.→
HIHome InspectorHome-inspector education, exam and application requirements.→
HCHVAC ContractorHVAC, refrigeration and mechanical-contractor requirements.→
LVLow-Voltage InstallerCommunications, security and low-voltage classifications.→
PCPlumbing ContractorPlumber, master plumber and plumbing-contractor routes.→
SISeptic InstallerOnsite wastewater and septic-system installer requirements.→
SCSolar ContractorSolar installation and electrical-contractor classifications.→
WWWater-Well DrillerWell drilling, pump installation and contractor credentials.→