Plumbing license requirements in Delaware
The Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners issues plumbing licenses in Delaware. Here's what each license level takes, from the official rules.
Issued by
Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners
Official siteRequirements checked October 21, 2026
License levels
One license level covers this work.
- 1
Master Plumber
A journeyman certificate from a registered apprenticeship plus two years under a master plumber, or seven years under a master plumber plus the apprenticeship equivalency test. Then the written exam.
Official source
Rules, fees and exam schedules change. Confirm the details with the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners before you apply.
Plumbers in Delaware
From the Bureau of Labor Statistics. See a city for local wages and contractor counts.
- Plumbers employed
- 1,590
- Median hourly wage
- $31.11
Plumbing market data by city
Once you're licensed
Tradesman runs the business side for plumbers: estimates, scheduling, invoicing and payments in one app.
Plumbing licensing in Delaware: common questions
Who issues plumbing licenses in Delaware?
The Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners. The license levels and what each takes are listed above, with a link to the official source for each.
What does the Master Plumber license take in Delaware?
A journeyman certificate from a registered apprenticeship plus two years under a master plumber, or seven years under a master plumber plus the apprenticeship equivalency test. Then the written exam.
Licensed and ready for more customers?
Tradesman handles estimates, scheduling and invoicing so you can spend your time on the work. Now in early access.