How to get licensed, state by state.
Source-verified US occupational licensing & certification, state by state. Every requirement, fee, exam, renewal, and issuing board — traced to an official source and dated, so you know it's current.
Browse by credential
CNA Certification Requirements, State by State
How to Become a Notary Public, State by State
How to Get an HVAC License, State by State
Electrician License Requirements by State
General Contractor Licensing by State
Plumber Licensing by State
Alcohol Server Cards by State
Food Handler Cards by State
Why trust this atlas
Requirements come from the issuing boards themselves — not summarized from memory. Each page names its official source and the date it was last verified. We explain requirements; we never sell courses or rank "best" programs.
We also publish our own receipts, which is the part most references skip:
- What changed at the boards — every week we re-check all 2,717 official sources this atlas cites, and we publish the 14 changes we have reviewed and written up in full — what the rule said before, what it says now, and who it affects. Rules change quietly: a page that was right in June can be wrong in August.
- Corrections log — every factual defect we have ever found on this site, all 373 of them, 95 rated high severity, with what was wrong and what it says now. Published in full, including the ones nobody would have noticed.