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Colorado State Plumbing Board
Plumbing Frequently Asked Questions
Information about the Plumbing Board including licensure, permits, and much more
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Plumbing Frequently Asked Questions

Plumbing HOME



Processing times for permit applications submitted via U.S. mail may be delayed by up to 5-7 business days. We are encouraging all individuals requesting an electrical or plumbing inspection to submit their permit applications using our online system. 

Online permit submissions are processed in the system immediately upon payment. For any questions regarding the online system please contact


Welcome to the Plumbing Homepage

The State Plumbing Board licenses, registers, and regulates plumbers, apprentices, and plumbing contractors. The Board does not regulate pipe fitters, drain cleaners, or gas pipe installers. The Board's mission is to protect the health of the public by enforcing the state plumbing statutes. The Board conducts regular inspections for plumbing and gas pipe installations and reviews special requests for exceptions to the code.

The Board is made up of eight professional and public members that are appointed by the governor.

Program Information

Program/Board Members

Joyce J. Young, Program Director

State Plumbing Board
1560 Broadway, Suite 1350
Denver, CO 80202

Phone: 303-894-7800  |  Fax: 303-894-2310  |  Email:


Board Officers:

  • Noreen McMahon, Chair
    Public at Large | Term Expires:  July 2023

  • Catherine A. Dunihoo, Vice-Chair
    Journeyman Plumber | Term Expires:  July 2025

  • Justin Guerrero
    Plumbing Contractor | Term Expires:  August 2026

  • John Hill
    Plumbing Contractor | Term Expires:  July 2024

  • Clayton Moores, Professional Engineer
    CDPHE Ex-Officio Member non-voting | Term Expires:  N/A

  • Glen Ratliff
    Plumbing Inspector | Term Expires:  July 2025

  • Kevin Thomas Roy
    General Contractor | Term Expires:  July 2023

  • Sonny Welch 
    Master Plumber | Term Expires:  July 2025

Public Notices

Joint Stakeholder Meeting - July 29, 2022

The Division of Professions and Occupations' held a Joint Stakeholder Meeting for all Boards and Programs that allowed stakeholders an opportunity to provide feedback, and help develop new rules to implement the directives of Executive Order D-2022-034 (Protecting Colorado’s Workforce and Expanding Licensing Opportunities).


Permanent Rulemaking Hearing - October 27, 2021

The State Plumbing Board held a Permanent Rulemaking Hearing on October 27, 2021, that allowed stakeholders a final opportunity to provide feedback before the Board considered adopting revisions to Rule 1.4(L), to implement Colorado Senate Bill 21-077 (Concerning the elimination of verification of an individual's lawful presence in the United States as a requirement for individual credentialing).


Cost-Benefit Analysis regarding Permanent Rulemaking Hearing on June 30, 2021

On May 14, 2021, the State Plumbing Board filed a Notice of Hearing with the Colorado Secretary of State and Colorado Office of Policy, Research & Regulatory Reform for the Board to consider adopting Rule 1.3(C), to implement Colorado Senate Bill 20-120 (Concerning requirements for registered apprentices). As allowed per section 24-4-103(2.5), C.R.S., a request for a Cost-Benefit Analysis was received on May 18, 2021. The State Plumbing Board produced the Cost-Benefit Analysis on June 18, 2021, consistent with the statutory requirements of section 24-4-103(2.5), C.R.S.  


Permanent Rulemaking Hearing - June 30, 2021

The State Plumbing Board held a Permanent Rulemaking Hearing on June 30, 2021, that allowed stakeholders a final opportunity to provide feedback, before the Board considered adopting Rule 1.3(C), to implement Colorado Senate Bill 20-120 (Concerning new requirements for registered apprentices).

Legislative Updates
Meeting Minutes
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