Verify a California Plumber license
blockedCA Contractor Licensing Board · profession key
plumberBlocked. This board blocks automated lookups from our region. We say so instead of guessing; we are working on an approved access path.
How California Plumber license verification works
A Plumber in California is licensed by the CA Contractor Licensing Board. When this board is live, PrimaryCheck will query it directly for status, expiration and disciplinary actions and attach the board's record as evidence. Until then the API answers honestly with unable_to_verify and the reason, and the coverage endpoint reports this row as blocked.
What a Plumber license check returns
| Field check | Passes when |
|---|---|
license_number | Equal to the board's number, ignoring prefix and leading zeros |
name | Last name or declared alias matches; first name exact or nickname |
license_type | The record is a Plumber license, strictly (no near-miss types) |
status | The board shows an active status; probation is active with a flag |
expires | Expiration is on or after today, where the board publishes it |
disciplinary_actions | Recorded and flagged with any order documents; never silently dropped |
Verdicts: verified, discrepancy, not_found, unable_to_verify (with a reason), pending. See how verdicts are decided.
Verify a California Plumber license by API
POST https://api.primarycheck.com/v1/verifications
{
"person": { "firstName": "…", "lastName": "…" },
"claims": [
{ "type": "license", "state": "CA", "profession": "plumber", "number": "…" }
],
"purpose": "employment",
"consent": { "consentId": "cons_…" }
}Quickstart · License claim reference · Run one in the dashboard
Other California licenses from the CA Contractor Licensing Board
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Plumber license verification in nearby states
- Oregon Plumber license verificationlive
- Nevada Plumber license verificationlive
- Arizona Plumber license verificationlive
- Alabama Plumber license verificationlive
- Colorado Plumber license verificationlive
- Connecticut Plumber license verificationlive
- Delaware Plumber license verificationlive
- Florida Plumber license verificationlive
All 51 jurisdictions: license verification coverage.