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.

The Colorado Office of Policy, Research and Regulatory Reform is currently conducting a sunset review of the Plumbing Program. Analysis is performed to determine if the program is necessary and should be continued, modified, or repealed.  To provide input on this review, please visit COPRRR's website.

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:

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

  • Glen Ratliff, Board Vice-Chair
    Plumbing Inspector | Term Expires:  July 2025

  • Vacant, At-Large Member
    Vacant | Term Expires:  

  • 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

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

  • Sonny Welch 
    Master Plumber | Term Expires:  July 2025

Public Notices

Plumbing Board - Stakeholder Meeting - September 7, 2023

The Colorado State Plumbing ("Board") will held a virtual Stakeholder Meeting on September 7, 2023. The purpose of this Stakeholder Meeting was for the Board to receive feedback regarding the implementation of Colorado House Bill 23-1057 (opens in new window) (Concerning a Requirement that Certain Public Buildings have Restrooms with Amenities for all Genders, and, in Connection Therewith, Making an Appropriation) and Colorado Senate Bill 23-265 (opens in new window) (Concerning a Prohibition on a Regulator Imposing Discipline Against a Person Based on Certain Activities Involving Marijuana) and the proposed rule changes to Rules 1.2 (Standards) and the repeal of Rule 1.10 (Protecting Colorado's Workforce and Expanding Licensing Opportunities).

Permanent Rulemaking Hearing - February 22, 2023

The State Plumbing Board will hold a Permanent Rulemaking Hearing to allow stakeholders a final opportunity to provide testimony before the Board considers adopting the proposed changes to the Colorado Plumbing Code. 

Hearing Information

  • Wednesday, February 22, 2023, at 9:00 A .M. (MDT)

Webinar Registration 


Emergency and Permanent Rulemaking Hearing - October 26, 2022

The State Plumbing Board held an Emergency and Permanent Rulemaking Hearing to allow stakeholders a final opportunity to provide testimony before the Board considers adopting the proposed new Rule 1.10, to implement Executive Order D 2022-034 (Protecting Colorado’s Workforce and Expanding Licensing Opportunities). The Board adopted Rule 1.10 on an emergency and permanent basis. Rule 1.10 took effect on October 26, 2022. 

Legislative Updates
Meeting Minutes