Delaware requires a state-level plumber license. The licensing authority is State Plumbing Board. The median salary is $56,420 per year.
Last updated 2026-05-08
Delaware requires a plumber to hold a state license. Install, maintain, and repair piping systems for water, gas, drainage, and sewage in residential and commercial buildings. Licensing is administered by the State Plumbing Board.
| Minimum Age | 18 years old |
| Education | High school diploma or GED |
| Work Experience | 8,000 hours (48 months) |
Delaware requires passing the Delaware Plumber Exam with a minimum score of 70%. The application fee is $75.
| Exam Name | Delaware Plumber Exam |
| Passing Score | 70% |
| Code Edition | Uniform Plumbing Code / International Plumbing Code |
| Application Fee | $75 |
Practice with real exam-style questions based on the Uniform Plumbing Code / International Plumbing Code.
Start Practice Exam — $2.99 →Getting licensed as a plumber in Delaware takes 48 months on the typical path. Here are the steps.
The total cost includes an exam application fee of $75 and renewal fees of $75 every 2 years. Continuing education of 16 hours is required per renewal cycle.
| Fee | Amount |
|---|---|
| Exam Application | $75 |
| License Renewal | $75 every 2 years |
| Continuing Education | 16 hours |
Plumbers in Delaware earn a median salary of $56,420, which is less than the national average. Data from BLS OEWS May 2024. Once licensed, plumbers in Delaware handle projects with real cost variation by region — see Wilmington plumbing pricing.
| Mean (average) | — / year |
| Entry level (10th pct) | — |
| Top earners (90th pct) | — |
| Total employed | — in Delaware |
| National average | $65,160 |
Yes — Delaware requires a state-level plumber license. Install, maintain, and repair piping systems for water, gas, drainage, and sewage in residential and commercial buildings.
The required exam is the Delaware Plumber Exam. You need a score of 70% to pass. The exam fee is $75.
The median annual salary for plumbers in Delaware is $56,420. The national median is $65,160.
Delaware requires 16 hours of continuing education for license renewal every 2 years.
The fastest path takes approximately 36 months. The typical path takes 48 months including experience requirements.