Do I need a plumber license in Delaware?

Delaware requires plumber contractors to hold a Delaware Plumber license from the Delaware Board of Plumbing, HVACR & Mechanical Examiners. Apply through https://dpr.delaware.gov/boards/plumbers/ with a typical $1,200 total fee (range $175-$7,000) and a 1-3 year renewal cycle. Verify the exact classification with the board before submitting.

Which board handles plumber licensing in Delaware?

Delaware Board of Plumbing, HVACR & Mechanical Examiners is the relevant authority shown in the Delaware licensing seed for this page. The verification or application URL in the loader is https://dpr.delaware.gov/boards/plumbers/.

How much does a plumber license cost in Delaware?

The recorded licensing cost range is $175-$7,000, with a typical total around $1,200. That range comes from the page loader and covers application, exam, bond, insurance, or registration costs where they apply.

Are Delaware plumbers licensed?

Yes. The Board of Plumbing, HVACR & Mechanical Examiners issues master plumber, journeyperson, and apprentice licenses.

Do I need a license to work as a plumber in Delaware?

Delaware requires plumber contractors to hold a Delaware Plumber license from the Delaware Board of Plumbing, HVACR and Mechanical Examiners. Apply through https://dpr.delaware.gov/boards/plumbers/ with a typical $1,200 total fee and a 1 to 3 year renewal cycle.

¿Necesito licencia para trabajar como plumber en Delaware?

Delaware requiere plomero contratistas tener una Delaware Plomero licencia de la Delaware Board of Plumbing, HVACR and Mechanical Examiners. Solicite a través de https://dpr.delaware.gov/boards/plomeros/ con un costo típico de $1,200.

Plumber license in Delaware (2026)

Required license type

Delaware requires all contractors doing business in the state to obtain a Delaware business license and register with the Contractor Registry. Specialty trades (electrical, plumbing, HVAC) are licensed by the Division of Professional Regulation.

Application requirements

Working as a plumber in Delaware typically requires submitting an application packet to the Delaware Board of Plumbing, HVACR & Mechanical Examiners — including proof of experience, exam scores, and insurance.

Proof of relevant trade experience or apprenticeship hours
Passing score on the state trade exam(s)
General liability insurance + workers' comp
Surety bond filed with the board (when required)
Business entity registration with the Secretary of State
Background check + license fee submitted with packet

This is the standard packet most U.S. state boards require. Verify the exact list with the Delaware Board of Plumbing, HVACR & Mechanical Examiners before applying — requirements change by trade classification.

Fees and renewal cycle

Total cost to become a licensed plumber in Delaware ranges from $175 to $7,000 (typical $1,200). The range covers application + exam fees, bond + insurance premiums, and the first year of business registration.

Floor

$175

Typical

$1,200

Ceiling

$7,000

Most state boards renew on a 1-3 year cycle and require continuing education credits. Verify the exact renewal window and CE requirement with the Delaware Board of Plumbing, HVACR & Mechanical Examiners — late renewal typically triggers a reinstatement fee.

Reciprocity with neighboring states

Delaware borders 3 other launched states ProFix Directory tracks. Reciprocity is set by each state board individually — check the destination state for the current rule before relying on it.

Where to apply

Delaware Board of Plumbing, HVACR & Mechanical Examiners

Open the board lookup →

Board phone: +1-302-744-4500

Delaware requires all contractors doing business in the state to obtain a Delaware business license and register with the Contractor Registry. Specialty trades (electrical, plumbing, HVAC) are licensed by the Division of Professional Regulation.

Why ProFix verifies every plumber

Every pro we list in Delaware is matched against the Delaware Board of Plumbing, HVACR & Mechanical Examiners record, the Secretary of State business registry, and OSHA inspection data. We surface license status, revocation history, and bond filings on every profile so homeowners can shortlist verified pros without trusting a single review-platform score.

See the full verification methodology →

Common questions

Do I need a plumber license in Delaware?: Delaware requires plumber contractors to hold a Delaware Plumber license from the Delaware Board of Plumbing, HVACR & Mechanical Examiners. Apply through https://dpr.delaware.gov/boards/plumbers/ with a typical $1,200 total fee (range $175-$7,000) and a 1-3 year renewal cycle. Verify the exact classification with the board before submitting.
Which board handles plumber licensing in Delaware?: Delaware Board of Plumbing, HVACR & Mechanical Examiners is the relevant authority shown in the Delaware licensing seed for this page. The verification or application URL in the loader is https://dpr.delaware.gov/boards/plumbers/.
How much does a plumber license cost in Delaware?: The recorded licensing cost range is $175-$7,000, with a typical total around $1,200. That range comes from the page loader and covers application, exam, bond, insurance, or registration costs where they apply.
What requirements should Delaware plumber applicants verify?: Delaware requires all contractors doing business in the state to obtain a Delaware business license and register with the Contractor Registry. Specialty trades (electrical, plumbing, HVAC) are licensed by the Division of Professional Regulation.
Are Delaware plumbers licensed?: Yes. The Board of Plumbing, HVACR & Mechanical Examiners issues master plumber, journeyperson, and apprentice licenses.

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