Plumber Licensing in Connecticut

Connecticut Plumber License Verification

In Connecticut, all individuals performing plumbing work are required to be licensed. The primary governing body is the Connecticut Department of Consumer Protection (DCP), which issues professional licenses and oversees the Plumbing and Piping Work Examining Board. The state offers several types of licenses, including the P-1 Unlimited Plumbing Contractor and P-2 Unlimited Journeyperson Plumber licenses, along with various limited licenses.

To qualify for an Unlimited Journeyperson Plumber (P-2) license, applicants must complete a registered apprenticeship program, typically a four-year program, or demonstrate equivalent experience and training, followed by passing a comprehensive plumber examination. For an Unlimited Plumbing Contractor (P-1) license, two years of experience as an unlimited licensed journeyperson or equivalent is required, in addition to passing both a trade examination and a business and law examination. Examinations are administered by PSI, are open book, and require a minimum score of 70% to pass.

All plumbing licenses in Connecticut must be renewed annually. For unlimited contractors, 7 hours of continuing education are required every two years, while unlimited journeypersons need 5 hours every two years for renewal. Connecticut does not have reciprocal agreements for plumbing licenses with other states.

Insurance and Bonding Mandates

Plumbing professionals and businesses in Connecticut must adhere to specific insurance requirements. General liability insurance is commonly required for plumbing contractors, particularly those with employees, with minimum coverage amounts that may vary. Additionally, workers' compensation insurance is mandatory for any business in Connecticut that employs one or more individuals. While general liability and workers' compensation are typically required, surety bonds may also be mandated for certain contracts, especially those involving state or local government projects.

Permitting and Local Regulations

Effective July 1, 2026, the 2026 Connecticut State Building Code will be in effect, which adopts the 2024 International Plumbing Code. Plumbers are required to adhere to these codes for all installation, alteration, repair, and replacement of plumbing systems. Permits, often referred to as "trade permits," are typically required for plumbing alterations, installations, and major renovations. These permits are issued and enforced by local building officials in each city or town's municipal building department, who are also responsible for reviewing applications and conducting inspections.

Official Connecticut Resources

For the most current and detailed information regarding plumbing licenses, regulations, and resources in Connecticut, refer to the following official sources:

• Connecticut Department of Consumer Protection – Plumbing and Piping Work Examining Board
• Connecticut Department of Consumer Protection – Plumbing Licenses and Scope of Work
• Connecticut Department of Administrative Services – 2026 Connecticut State Building Code

  Directory of Plumber contractors serving Connecticut