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A Master Plumber can design, install, construct, replace, service, repair, alter, or modify the pipes, fixtures, and other apparatus used for bringing the water supply into a building and removing liquid and water-carried wastes from a building. A Master Plumber can also install and connect gas piping.
You need a Master HVACR or Master HVACR Restricted license in addition to a Master Plumber license if you design, install, construct, maintain, service, repair, alter, or modify a product or equipment including gas piping in heating and air conditioning, refrigeration, ventilation, or process cooling or heating systems. See Master HVACR and Master HVACR Restricted Licensure for more information.
All applications are submitted our online system DELPROS. We no longer accept paper applications.
In order to apply for a license or submit a service request, you must first have a DELPROS user account. To LOG IN or CREATE a DELPROS (Delaware Professional Regulation Online Services) user account:
DELPROS allows you to save your incomplete application and return to it later to finish the process. You only have six (6) months to submit your application once you begin.
You may check the status of your application online throughout the entire application process by using the “View Application Status” feature in DELPROS on your e-License dashboard.
On the ATTACHMENTS page of your application, you may be instructed to:
The requirements for this license type are provided in the following section(s).
These requirements apply to both reciprocity and examination applications. In addition to submitting the application and fee in DELPROS, you must submit:
The following requirements apply to applications by examination in addition to the requirements in the previous section above. The documents that you must submit is determined by whether or not you have a “Journeyman Certificate”. A “Journeyman Certificate” is issued by a federally-approved plumbing apprenticeship program such as the Delaware Department of Labor.
When the Board approves you to sit for the Master exam, the Board office will send you a candidate information packet. For more information about the Master exam, see Examinations.
The following requirements apply to applications by reciprocity in addition to the requirements in the Requirements for All Applicants section above.
If none of the jurisdictions where you hold a current license has licensure standards that are “substantially similar” to those of Delaware, proof of experience is required. The table below shows whether to submit proof of experience.
IF you hold a current Plumber license in any of these states… | THEN the licensure standards… | AND you… |
Connecticut, Iowa, Maryland | are substantially similar | do not need to submit any proof of experience. |
Alabama, Arkansas, District of Columbia, Florida, Georgia, Michigan, New Hampshire, New Jersey, North Carolina, Ohio, Rhode Island, South Carolina, Virginia, West Virginia | are not substantially similar | must submit proof of practicing a minimum of seven (7) years after receiving licensure as a Master in the reciprocating jurisdiction. |
any state or U.S. territory not listed above | must be evaluated by the Board | must submit a copy of the other jurisdiction’s law and regulations for evaluation. |
Related Topics: Department of State, Division of Professional Regulation, DPR, Master Plumber Licensure, State of Delaware