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Delaware plumber license renewal & CE requirements

When to renew, how many continuing-education hours you need, which topics are required, and where to find approved courses. Checked .

Quick answer

Renewal rules by license

Master Plumber

RenewalEvery 2 years. Plumbing/HVACR licenses expire October 31 of even years. Renew in DELPROS; late renewal allowed up to 1 year after expiration (illegal to practice while expired). After 1 year, license terminates — reapply as new.Not confirmedSource: dpr.delaware.gov · as of · Renewal dollar amount notified at renewal (fee schedule).
CE hours & topics5 hours per biennial renewal period (through Oct 31 even years)
  • Board-approved CE (course list posted for period ending Oct 31, mid 2028)
CE courses on the Board listing are typically 5-hour plumbing packages. Confirm the exact topic split in 24 Del. Admin. Code 1800 § 5.0 for your license type. Dual plumber/HVACR licensees may need additional hours.
Source: dpr.delaware.gov · as of · Renewal timing: dpr.delaware.gov
Fees
  • Plumber (Master) application: $173
  • Temporary plumber/HVACR: $40
Source: dpr.delaware.gov · as of · Renewal fee amount is disclosed at renewal time in DELPROS; late fee is 50% of the renewal fee.

Approved CE provider lists (official)

What we couldn't confirm yet

We only publish what we can tie to an official source. These items aren't published anywhere we could verify, so ask the office listed:

FAQ

When do plumber licenses renew?

October 31 of even years. Renewal fee is shown in DELPROS at renewal.

How much CE?

Board-approved CE each period (listed courses are typically 5 hours for plumbing).

Not licensed yet? See How to get a plumber license in Delaware.

Other states

Compare every state side by side: license requirements by state · renewal & CE by state.