Quick Reference Table
Item | Details |
|---|---|
License Type | Journeyperson (P, J, PP codes), Contractor (P, J, PP codes), Special scopes |
Regulating Agency | Connecticut Department of Consumer Protection (DCP), Plumbing and Piping Work Examining Board |
Experience Required | Apprenticeship or equivalent experience: varies by classification (see below) |
Exam Required | Yes; administered by PSI, Inc. |
Renewal Cycle | Annual, expires October 31 |
Continuing Education | Contractor: 5 hours biennially; Journeyperson: 3–5 hours biennially as assigned |
Fees | Application: $90–$150; Initial: $120–$150; Renewal: $120–$150 (as of July 2026, see fee schedule) |
Official Licensing Portal |
Who Needs a License in Connecticut?
Anyone who performs skilled plumbing work in Connecticut must hold the appropriate state-issued plumbing license. This applies to all residential, commercial, and public works plumbing jobs, regardless of project size or contract value.
Connecticut law defines "plumbing and piping work" in CGS § 20‑330 as any installation, repair, alteration, or replacement of plumbing and piping systems, including domestic water, waste, and gas lines. Only individuals, not business entities, can hold a plumbing license. Journeypersons must work under a licensed contractor; only contractors can contract with the public or employ journeypersons. Homeowners may complete some non-trade minor work on their own homes, but all regulated plumbing work requires proper licensing.
Home Improvement Contractor registration is separate and does not allow you to lawfully perform plumbing work covered by the plumbing statutes unless you also have the necessary plumbing trade license. Contractors must verify their required scope and cannot bid, offer, or perform plumbing work in Connecticut without proper licensure.
Plumbing License Types in Connecticut
Connecticut offers several plumbing license classes distinguished by scope, type (contractor or journeyperson), and required experience. You must match your intended work to the proper code:
Unlimited Plumbing Licenses
P-1 Unlimited Plumbing Contractor: Permitted for all plumbing and piping work under CGS § 20‑330. Requires two years as P-2 unlimited journeyperson or equivalent documented experience (about 12,000 hours OJT and 576 classroom hours).
P-2 Unlimited Journeyperson Plumber: May perform all plumbing and piping work, but only under supervision or employment of a P-1 contractor. Prerequisite: Completion of registered apprenticeship or documented equivalent.
Limited Plumbing Licenses (J and P Series)
J-1 Limited Contractor: Domestic water pumps and water conditioning contracting; requires two years as J-2 journeyperson or equivalent experience.
J-2 Limited Well Pumps and Piping Journeyperson: For water system work under contractor supervision; must complete apprenticeship or equivalent experience.
J-3 Limited Lawn Sprinkler Contractor: Lawn sprinkler systems; two years as J-4 journeyperson or equivalent experience.
J-4 Limited Lawn Sprinkler Journeyperson: Must work under J-3; requires one-year apprenticeship or equivalent.
P-6 Limited Sewer, Storm, and Water Journeyperson: Installs or repairs exterior storm, sewer, and water from utility connection to inside building; apprenticeship required.
P-7 Limited Sewer, Storm, and Water Contractor: Contractor for P-6 scope; requires two years as P-6 journeyperson or equivalent (approx. 6,000 OJT and 180 classroom hours).
P-8 Limited Gasoline Tank, Piping, and Pump Journeyperson: For underground storage tanks or waste oil work under supervision; one-year apprenticeship or equivalent.
P-9 Limited Gasoline Tank, Piping, and Pump Contractor: Contractor for P-8 scope; two-year journeyperson prerequisite (about 6,000 OJT and 144 classroom hours).
Process Piping and Pool/Spa Licenses
PP-1 Limited Process Piping Contractor: Industrial process piping contractor; two years as PP-2 or equivalent (see official guidance for scope details).
PP-2 Limited Process Piping Journeyperson: Under PP-1 contractor only; apprenticeship or equivalent required.
SP-1 Limited Spa and Pool Contractor: Pool and spa plumbing (also covers limited heating and electrical); two years as SP-2 journeyperson or equivalent experience.
If you are unsure about license scope for a complex or specialized project, review the official license scope definitions and contact DCP for clarification.
How to Get Licensed: Plumbing License Requirements in Connecticut
To meet plumbing license requirements in Connecticut, you must follow a structured application and exam process. Each step ensures you qualify, document your experience, and comply with state standards.
Select Your License and Verify Experience
Determine your correct license class: Review the official scope chart and select the license matching the work you intend to perform or supervise.
Verify experience and training: For contractors, you must document two years as a journeyperson (with specific OJT and classroom requirements). Journeypersons must show completion of an apprenticeship program or equivalent. Reference the Equivalent Experience and Training page.
Application and Exam Steps
Gather documentation: Prepare notarized employer letters detailing your duties, dates, and tasks covered, as well as transcripts for classroom hours. Payroll or W-2 forms are not accepted as substitution for direct employer documentation.
Apply online or by mail: Access the DCP eLicense portal to start your application. Create a User ID and password. Printed applications are provided online for those who need them.
Pay required application fee: Amount depends on license class ($90 for journeyperson, $150 for contractor as of July 2026; verified fee schedule).
Upon DCP acceptance, schedule your licensing exam: Register and pay the separate exam fee with PSI, Inc. You will receive authorization to test upon successful application review.
Take the exam: Attend an in-person testing center. Connecticut no longer offers online exams for plumbing as of August 2025. Confirm exam details with PSI when you schedule.
Await license approval: DCP reviews your file after exam results are received; board approval and issuing of license may take several weeks depending on meeting schedule.
Maintain your license: Fulfill all annual renewal and biennial continuing education requirements to keep your license active.
Typical processing timelines are not published, but anecdotal evidence suggests that the DCP acts upon applications at or after the Board’s next scheduled meeting following exam completion.
Application Requirements
Applicants seeking to satisfy plumbing license requirements in Connecticut must meet concrete prerequisites. All supporting evidence must be official, detailed, and match the license code and scope.
Experience and Age
You must document the precise years or hours of on-the-job training (OJT) and classroom instruction for your chosen license. For example, the P-1 Unlimited Contractor requires two years (about 12,000 OJT hours and 576 hours of classes) as a licensed P-2 unlimited journeyperson, proven through employer letters and training transcripts. Journeyperson licenses require completion of a DCP-approved apprenticeship or equivalent documented training. The DCP does not list a specific minimum age or citizenship status for applicants on plumbing license pages.
Bond and Insurance
Connecticut does not require surety bonds or insurance as a precondition for individual plumbing licensure. The DCP waives the bond requirements that otherwise apply to home improvement contractors. However, you may be subject to insurance rules if performing home improvement work under other statutes; always verify with the DCP if your business activities cross into additional regulated areas.
Background Check
No background check or fingerprinting is required for a standard plumbing license application as of the most recent DCP policy. This can change by statute, so applicants should periodically check the DCP site prior to application (see official links below).
Supporting Documentation
Notarized employer letters detailing scope, dates, and OJT coverage
Transcripts or proof of classroom hours
Equivalent training verification if not from formal apprenticeship
Submissions must be original and notarized. Payroll records and W-2s are not accepted alone. The burden is on you to prove your experience lines up with the specific DCP Exhibit A chart for your license code.
Exams
Every individual must pass an occupational trade examination as part of plumbing license requirements in Connecticut. No license is issued without first passing this exam.
Administrator and Format
PSI, Inc. is the official exam vendor for plumbing licensing. You register and pay a separate exam fee directly through PSI, after obtaining authorization from the DCP. Connecticut does not permit company testing or online remote exams, only in-person test centers as of August 2025.
Content and Passing Score
The DCP does not publish exam outlines, question counts, or passing scores on its public site. You may request a candidate bulletin or outline from the DCP or PSI directly for planning purposes. Most exams cover Connecticut plumbing code, state statutes, trade safety, and, for contractors, business law. Applicants must confirm with PSI and DCP for up-to-date content details.
If scheduling or format questions remain, review the DCP Exam Vendor page or contact the exam provider directly for exam logistics and procedures.
Fees
All plumbing license requirements in Connecticut include mandatory fees. These cover application, initial license, renewal, and continuing education. Additional exam fees are paid directly to PSI.
Limited Journeyperson: Application $90, Initial $120, Renewal $120 (as of July 2026, verify at DCP Fee Schedule PDF).
Limited Contractor: Application $150, Initial $150, Renewal $150 (as of July 2026, verify at DCP Fee Schedule PDF).
Unlimited Journeyperson: Application $90, Initial $120, Renewal $120 (as of July 2026, verify at DCP Fee Schedule PDF).
Unlimited Contractor: Application $150, Initial $150, Renewal $150 (as of July 2026, verify at DCP Fee Schedule PDF).
Exam vendor fee: Set by PSI, Inc. Fee amount not published; you must verify directly with PSI at time of registration (DCP exam vendor page).
Guaranty Fund: Not applicable for plumbing licenses.
Late/penalty fees: Not published, verify at renewal or through DCP portal as needed.
Renewal and Continuing Education
Connecticut plumbing licenses expire every year on October 31. Renewal is required to remain active, regardless of license type. Each renewal cycle may have different continuing education (CE) requirements dependent on the license held.
Renewal Steps and Deadlines
You must renew online or by mail before October 31 of each year. Renewal requires payment of the renewal fee and, for licenses with a CE requirement, evidence that mandatory hours have been completed in the appropriate cycle window.
Contractors: 5 hours of CE every two years, between August 1 of even-numbered year and July 31 of following even year (must finish 3 months before renewal deadline).
Journeypersons: 5 hours (unlimited) or 3 hours (limited) of CE biennially, between August 1 of odd-numbered year and July 31 of following odd year.
P-6, P-7, PP-1, PP-2: No CE currently required.
CE courses must be approved by the Plumbing Board via the eLicense system (see official DCP CE page).
Consequences of Non-Compliance
If you fail to renew your license on time, your license will lapse and you may not legally perform or contract plumbing work. If you do not complete your CE within the prescribed period and cannot show proof (held for four years), renewal will be denied. Hardship waivers are available if you have a documented health or other hardship, contact DCP for forms.
Reciprocity
There are no reciprocity agreements for plumbing license requirements in Connecticut. All applicants must apply, test, and document their experience as if applying for the first time. Out-of-state licenses or credentials do not permit a waiver of Connecticut licensing rules.
This applies to both contractors and journeypersons, regardless of credentials held in Massachusetts, New York, Rhode Island, or other neighboring states.
