Requirements, license levels, and the issuing authority — sourced from California's official board.
CSLB restructured its site; several classification/renewal URLs 404. Facts confirmed from CSLB study guide and current CSLB rules via search rather than a single live board page.
| Requirements | 4 years of journey-level (or higher) plumbing experience within the past 10 years; education can substitute for up to 3 years. Pass the Law & Business exam and the C-36 trade exam (72% each). File a $25,000 contractor bond (raised from $15,000 on 1/1/2023 under SB 607). |
| Reciprocity | No state journeyman/apprentice plumber license; California licenses only the C-36 contractor. |
| Renewal | Two-year renewal; no state continuing-education requirement for contractors. |
| Notes | CSLB restructured its site; several classification/renewal URLs 404. Facts confirmed from CSLB study guide and current CSLB rules via search rather than a single live board page. |
Sources: cslb.ca.gov · www.cslb.ca.gov. Always confirm current requirements with the issuing authority.
New licenses, ladder upgrades, classification changes and lapses, by market and credential tier. Read the quarterly free, or license the underlying data.