Verify a Delaware Plumber license
plumberLive. We query the board directly for every check and the nightly canary is passing.
How Delaware Plumber license verification works
A Plumber in Delaware is licensed by the DE Contractor Licensing Board. PrimaryCheck looks the license up live at the board's public verification system (board lookup) by license number, or by name when no number is supplied. The record the board publishes is captured as evidence, hashed, and rendered into a proof PDF.
Fields returned for this board: license_number license_type board licensed_by status issued effective expires multistate city state zip actions documents flags.
Board note: Electrical Examiners (Master T1-, Journeyperson TJ-, Residential, Limited, Special-*), Plumbing/HVACR (Master Plumber PL-, Master HVACR HM-) on DELPROS. Delaware has no state general-contractor license (Division of Revenue business license only) → contractor_general has no source.
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 Delaware Plumber license by API
POST https://api.primarycheck.com/v1/verifications
{
"person": { "firstName": "…", "lastName": "…" },
"claims": [
{ "type": "license", "state": "DE", "profession": "plumber", "number": "…" }
],
"purpose": "employment",
"consent": { "consentId": "cons_…" }
}Quickstart · License claim reference · Run one in the dashboard
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All 51 jurisdictions: license verification coverage.