Delaware Contractor License Lookup

Delaware has no general contractor competency license, but every construction contractor must register with the Department of Labor before working. Electricians, plumbers and HVACR workers are licensed. Search contractors on the official site of the Delaware Department of Labor, Office of Contractor Registration, and see the rules for trades and the job price where each applies. Runs in your browser; nothing is stored.

Search Delaware Department of Labor, Office of Contractor Registration

Delaware rules checked against official sources on October 25, 2026.

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Labor and materials together, in dollars. Leave it blank to see the state's dollar limits.

Delaware: Remodel, repair or home improvement

  • Delaware has a state rule for this work with no dollar minimum. Credential: contractor registration.

    A contractor doing construction or maintenance work for someone else must register with the Office of Contractor Registration before starting. The law sets no dollar minimum. Source: 19 Del. C. 3602(1), 3604

    Conditions and exceptions for this rule:

    • The registration applies to any person or company doing construction or maintenance for someone else for profit; owners working on their own property are outside the definition.

Look up a contractor on the official site

Search Delaware Department of Labor, Office of Contractor Registration

Search by name, name starts with, ZIP code, certification number, NAICS code or industry.

What to check on the board's record

  • The name or business on the record matches the name on your contract or estimate.
  • The status is active, not expired, suspended or revoked.
  • The license type or class covers your kind of job.
  • The license number in the contractor's ads and contract is the same one.

This summarises state rules from official sources. Only the board's own record can confirm one contractor's license. Checked October 25, 2026.

How Delaware licenses contractors

Delaware has no general contractor competency license, but every construction contractor must register with the Department of Labor before working. Electricians, plumbers and HVACR workers are licensed. 19 Del. C. 3604

Rules by type of work

Home improvement, new homes and roofing

  • contractor registration: A contractor doing construction or maintenance work for someone else must register with the Office of Contractor Registration before starting. The law sets no dollar minimum. Issued by Delaware Department of Labor, Office of Contractor Registration. 19 Del. C. 3602(1), 3604
    • The registration applies to any person or company doing construction or maintenance for someone else for profit; owners working on their own property are outside the definition.

Electrical work

  • electrician license: Providing electrical services in Delaware requires a state electrician license from the Board of Electrical Examiners. Issued by Delaware Division of Professional Regulation (Board of Electrical Examiners; Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners). 24 Del. C. 1407(a)

Plumbing

  • master plumber license: Providing plumbing services in Delaware requires a master plumber license, unless the law exempts the person. Issued by Delaware Division of Professional Regulation (Board of Electrical Examiners; Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners). 24 Del. C. 1807(a)

Heating and air conditioning (HVAC)

  • master HVACR license: Providing heating, ventilation, air conditioning or refrigeration services requires a master HVACR or master HVACR restricted license, unless the law exempts the person. Issued by Delaware Division of Professional Regulation (Board of Electrical Examiners; Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners). 24 Del. C. 1820(a)

Where to look up contractors in Delaware

  • Delaware Department of Labor, Office of Contractor Registration: official license search. Search by name, name starts with, ZIP code, certification number, NAICS code or industry.
  • Delaware Division of Professional Regulation (Board of Electrical Examiners; Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners): official license search

On the record, check that the name matches your contract, the status is active (not expired, suspended or revoked), the license type covers your job, and the license number matches the one the contractor gave you.

What this tool does not do

  • It does not check any one contractor. Only the board's own record shows whether a license is active and what it covers.
  • It covers state rules. Cities and counties can add their own licenses and permits, and the tool cannot list every local rule.
  • It does not decide whether a contractor broke the law or what you can recover. For a dispute, contact the board or a lawyer.
  • It does not cover every specialty trade a state licenses (for example pest control, elevators or well drilling).

Frequently Asked Questions

How do I look up a contractor license in Delaware?

Use the official online license search from the Delaware Department of Labor, Office of Contractor Registration. Search by the contractor's name, business name or license number, and check that the status is active and the license type covers your job. Other state boards on this page: the Delaware Division of Professional Regulation (Board of Electrical Examiners; Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners).

Does Delaware require a contractor license?

A contractor doing construction or maintenance work for someone else must register with the Office of Contractor Registration before starting. The law sets no dollar minimum.

Which trades need a state license in Delaware?

Electrical: electrician license from the Delaware Division of Professional Regulation (Board of Electrical Examiners; Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners). Plumbing: master plumber license from the Delaware Division of Professional Regulation (Board of Electrical Examiners; Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners). HVAC: master HVACR license from the Delaware Division of Professional Regulation (Board of Electrical Examiners; Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners).

Sources

Checked against official Delaware sources on October 25, 2026.

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