Cheyenne Plumbing: Licensing, Permits & Water

Chapter 5.44 built a complete trade ladder for a city its size: eight thousand documented hours and a DORA or ICC exam make a Journeyman Plumber with Gas, and three more years make a Master. The contractor classes slice the work precisely: plumbing is Class C Type 1, sewer and water mains Type 2, and the general classes above them are expressly barred from self-performing plumbing. On a Cheyenne plumbing site, everyone present holds a license of some grade; the regulations say so in plain words.

• Authority. City of Cheyenne Contractor Licensing Board (Code Chapter 5.44), administered by the Compliance Department's Building Safety Division
• Structure. The board licenses the trade at apprentice, journeyman and master levels (Journeyman Plumber with Gas takes four years and eight thousand documented apprentice hours plus a DORA or ICC exam; Master adds three more years as a journeyman) and licenses contractors by class, with plumbing as Class C Type 1 and sewer-and-water-main work as Class C Type 2
• Worth knowing. A general contractor license buys no plumbing rights in Cheyenne: Class A, B and R holders may not self-perform plumbing, and every person on a plumbing job site must hold a master, journeyman or apprentice license of their own.

Checked against the official source, September 2026: www.cheyennecity.org.

The owner-occupant of a one-family home may take out their own permit, for work in the house or to build the house itself, with two Cheyenne-specific fences: anyone the owner compensates in any way must hold a contractor license, and the city issues no second owner permit within three years of the last one on a previous principal property. The enforcement economics are elegant: work started without license or permit incurs an investigation fee equal to the missing paperwork's own price, owed regardless of what happens next.

• Permit office. Building Permitting & Licensing, Building Safety Division on O'Neil Avenue; permits and licenses go through the city's OpenGov online portal
• Homeowner rule. Yes, on a slow clock: the owner-occupant of a one-family dwelling may permit work in and about that home (or build their own residence), doing the work personally or through properly credentialed contractors (anyone the owner pays in any way must hold a license), and no new owner permit issues within three years of the last one on a previous principal property; commercial owners may not perform permit-level plumbing at all.
• Process. Starting construction without the required license or permit triggers an investigation fee equal to the license or permit fee itself, payable whether or not the paperwork is later obtained.

Checked against the official source, September 2026: www.cheyennecity.org.

BOPU's hardness page does the explaining itself: roughly 60 milligrams per liter, about three and a half grains, varying between 50 and 70 depending on how many wells are running. That is soft water by the utility's own classification, from a supply that is mostly mountain snowmelt gathered west of the Continental Divide and tunneled east through the Hog Park, Rob Roy and Granite Springs reservoir chain. Scale is a minor character at altitude; freeze protection, in Wyoming's hard-winter class, is the perennial star of Cheyenne plumbing.

• Utility. Cheyenne Board of Public Utilities (BOPU)
• Supply source. Mountain snowmelt from the Medicine Bow and Laramie ranges via a trans-basin reservoir system, about seventy percent, with thirty-five wells in four fields covering the rest
• Hardness. 60 mg/L (≈3.5 gpg), soft; utility hardness page, 50-70 range by well usage, 2026

Utility information: www.cheyennebopu.org. The hardness figure is the same record shown on the Wyoming page.

• Drain Cleaning
• Water Heater Repair

  Soft 60 mg/L snowmelt spares Cheyenne heaters from scale. In Wyoming's hard-freeze class, winterization matters far more than minerals.

• Sewer Line Repair

  Sewer and water mains are their own license class in Cheyenne (Class C Type 2), separate from the plumbing credential.

• Septic Tank Pumping
• Leak Detection & Repair
• All services →

This page explains how plumbing is regulated in Cheyenne; it is not a provider directory. For the job itself, describe the problem and your ZIP: a license-checked plumber who covers Cheyenne gets the details and contacts you with next steps and a quote.

• Casper
• Wyoming statewide →