Delaware plumbing license lookup: how to check and get a license
Delaware plumbing license lookup: who issues plumber licenses (Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation), how to check one online, the license types, and 344 plumbing, heating and air-conditioning contractors by county.
Do plumbers need a license in Delaware?
| Who licenses them | Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation |
|---|---|
| License types | Master Plumber |
| When a license is required | License required for plumbing work regardless of job size |
Ask for the Master Plumber's license number and check it on DELPROS; plumbing jobs generally need a local permit. Other license levels such as journeyperson or apprentice were not confirmed on the board page checked.
How do you look up a plumber's license in Delaware?
- Ask the plumber for the license number and the exact business name on the license.
- Open the Delaware plumbing license lookup run by Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation.
- Search by license number first. A name search can return several people or companies with similar names.
- Check that the status is active or current, that the license type covers your job, and that the name matches the company on your contract.
- If something doesn't match, ask the plumber about it before you sign or pay a deposit, or contact Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation.
What plumbing licenses does Delaware issue?
- Master Plumber
How do you get a plumbing license in Delaware?
Licenses are issued by the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation. Requirements such as experience, exams, insurance and fees change, so read the current rules on the official Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, Division of Professional Regulation source before you apply. Already licensed? List your business on Expert Helper to get matched with customers.
How many plumbers are there in Delaware?
The Census Bureau counted 344 plumbing, heating and air-conditioning contractors with employees in Delaware in 2023. The counties with the most:
| New Castle County | 188 |
|---|---|
| Sussex County | 100 |
| Kent County | 56 |
What do Delaware homes mean for plumbing work?
The median home in Delaware was built in 1986, 28% of households rent and 74% of homes are single-family houses. 42% of homes heat with utility gas and 37% with electricity, and 9% with fuel oil.
How do you choose a plumber in Delaware?
- Ask for the license number and look it up yourself on the state or city license search. Licensing is set by the state in some places and by the city or county in others.
- Ask whether the job needs a permit. Water heater swaps, gas work and moving fixtures often do, and the licensed plumber pulls it.
- Get the price in writing: a flat rate for the job, or the hourly rate, the trip fee and how parts are billed.
- For emergencies, ask what the after-hours rate is before the plumber drives out.
- Ask who does the work. A licensed master can send helpers, but the license holder is responsible for the job.
Plumbers in other states
Sources: Delaware licensing agency (linked above); US Census Bureau County Business Patterns 2023 and ACS 2023 5-year estimates.