Ca Plumbing License Search

A plumbing contractors license will allow a contractor to provide means for a supply of safe water, ample in volume and of suitable temperature for the purpose intended and the proper disposal of fluid waste from the premises in all structures and fixed works.


The work that a plumbing contractor can perform includes but are not limitied to:

Contractor Search Instructions. No field is mandatory. Click the SEARCH button at any point to see what results are displayed. NAME There is no need to enter special characters like commas or apostrophes. LICENSE Enter a 6 digit license number. A license search will list QPs, Officers, Former Names and/or DBAs if any.

  1. Requirements to Get a CA Plumbers License. To perform plumbing work in the State of California you will either need to register as a Journeyman or meet the requirements for a CA State contractors license. Registration as a journeyman allows you to works inside California on jobs that value no more than $500 in labor and materials.
  2. All contractors/builders must be licensed by the Contractors State License Board in order to perform work in California. The list of classifications and scope of work for each is available on the Board’s website at www.cslb.ca.gov. Plumbing Contractor, Class Code C-36.
  3. Main search page for BCD licenses and certified inspectors Search for BCD business contractors, individual licenses, inspector certifications, business registration or individual registration - By name, profession or license number.
  4. To get a list of licensed contractors in any area of California, simply enter either a city or zip code and pick the license classification you want. For example, if you need only roofing, plumbing, electrical, HVAC, or landscaping work, you’ll want to hire a contractor licensed in that particular specialty.

(a)Complete removal of waste from the premises or the construction and connection of on-site waste disposal systems;

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(b)Piping, storage tanks and venting for a safe and adequate supply of gases and liquids for any purpose, including vacuum, compressed air and gases for medical, dental, commercial and industrial uses;

(c)All gas appliances, flues and gas connections for all systems including suspended space heating units. This does not include forced warm air units;

(d)Water and gas piping from the property owner's side of the utility meter to the structure or fixed works;

(e)Installation of any type of equipment to heat water, or fluids, to a temperature suitable for the purposes listed in this section, including the installation of solar equipment for this purpose; and

(f)The maintenance and replacement of all items described above and all health and safety devices such as, but not limited to, gas earthquake valves, gas control valves, back flow preventors, water conditioning equipment and regulating valves.

General Information

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.

Selecting Type of Application

The application asks you to select whether you are applying by examination or reciprocity. Whether you are applying by examination or reciprocity determines the types of documents you are required to submit.

  • If you hold a current Plumber license in another state, U.S. territory or the District of Columbia, apply by reciprocity.
  • If you do not hold a current Plumber license in another state, U.S. territory or the District of Columbia, apply by examination.

In the state of Pennsylvania, Plumbing licenses are not issued by a state board. If the only current license you hold was issued by a Pennsylvania municipality or other jurisdiction, you must apply by examination.

Requirements for All Applicants

These requirements apply to both reciprocity and examination applications.

  • Submit a completed, signed and Application for Master Plumber Licensure. Applications that are incomplete, unsigned or not notarized will be rejected.
  • Enclose the non-refundable processing fee by check or money order made payable to “State of Delaware.” Applications submitted without this processing fee will be rejected.
  • If you have ever held an individual Master Plumber license in any other kind of jurisdiction, arrange for the Board office to receive a Verification of Licensure (included with application) sent directly from each jurisdiction.
    • The jurisdiction may be a state, U.S. territory, District of Columbia or any other governmental jurisdiction such as a city or county.
    • If a license was for a plumbing business that covered all its employees, instead of your own license as an individual, it is not necessary to obtain a license verification for that business.
  • If you have never been issued a U.S. Social Security Number (SSN), submit a
    Request for Exemption from Social Security Number Requirement.

Additional Requirements for Examination Applications

The following requirements apply to applications by examination in addition to the requirements in the Requirements for All Applicants section above.

Whether you have a “Journeyman Certificate” determines what other proof you must submit.

IF you…THEN these proofs are required:
have a Journeyman CertificateSubmit:
  • copy of your apprenticeship program Certificate of Completion
  • proof of at least two years work experience under supervision of a master licensee after receiving your certificate.
do not have a Journeyman CertificateSubmit proof of at least seven years work experience under a master licensee’s supervision.
  • The Board will review the documentation of your experience.
  • If approved, the Board office will notify you that you may take the Apprenticeship By-Pass Exam, a state-approved series of tests offered by Delaware apprenticeship schools.
  • When you receive the notice, call one of these schools to schedule your test date:
    New Castle County – New Castle County VoTech (302) 683-3643
    Kent County – PolyTech H.S. (302) 697-4545
    Sussex County – Sussex Tech, Georgetown (302) 856-9035

When you pass the By-Pass Exam (score of 70% or higher), send the official copy of the exam results to the Board office.

  • A “Journeyman Certificate” is issued by a federally-approved plumbing apprenticeship program such as the Delaware Department of Labor.
  • The Proving Your Experience section below explains what documentation you must submit to establish that you have the required years of experience.
  • 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 Testing.

Additional Requirements for Reciprocity Applications

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, Marylandare substantially similardo 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 Virginiaare not substantially similarmust submit proof of your experience under the supervision of a master licensee for at least seven years after licensure.
any state or U.S. territory not listed abovemust be evaluated by the Boardmust submit a copy of the other jurisdiction’s law and regulations for evaluation.
  • The Board’s decision on substantial similarity may change based, for example, on changes in the other jurisdiction’s law.
  • If you must submit proof of experience according to the table above, see the Proving Your Experience section below.

Proving Your Experience

The sections above on Requirements for Examination Applications and Requirements for Reciprocity Applications, whichever applies to you, explain when to submit proof of your experience and how many years of experience you need. The following explains what documents you must submit.

  • To prove your work experience for periods of employment, arrange for your supervisor(s) to complete the Verification of Employment included in the application packet. If you cannot obtain the required Verification of Employment form from the supervisor, you may substitute tax form W-2 or an affidavit of the employer or officer of the employing company. You must also enclose a statement explaining why you cannot obtain the Verification of Employment form from the supervisor.
  • To prove your work experience for periods of self-employment, you may submit tax form Schedule C.

Ca Plumbing License Lookup

  • Acceptance of proof of experience is at the Board’s discretion.