How to Verify a Plumber's License in Colorado Before You Hire: A Guide for Homeowners Seeking Plumbing Service in Greeley, CO



Roto-Rooter • September 16, 2026
Plumbing service technician repairing a leaking kitchen faucet with professional hand tools.

Knowing your plumber is properly licensed in Colorado can protect your home, your wallet, and your insurance coverage before any work begins. In this article, we explain how to verify a plumber's credentials using the state's official DORA lookup tool, what license types mean, and what questions to ask before you book a plumbing service in Greeley, CO.

Why a Colorado Plumber's License Matters

Licensed plumbers in Colorado meet state-defined training and testing standards, proving they understand current building codes and safety requirements.



The stakes are real. Many homeowner's insurance policies will not cover damage caused by unlicensed work, meaning a single bad repair could leave you paying out of pocket for water damage, mold, or structural issues. There is also a legal angle: under Colorado law, contracts with unlicensed contractors for work requiring licensure can be deemed void. Verifying upfront is always the easier path.

Understanding Colorado Plumber License Types

Colorado licenses plumbers at the individual level through DORA's Plumbing Board. The license tiers are Master Plumber (MP), Journeyman Plumber (JP), and Plumbing Inspector (PI1). A Master Plumber license is required to supervise plumbing work and pull permits. Journeyman Plumbers work under MP supervision.



If a company sends out a crew, the person doing the work should hold at least a Journeyman license, and a Master Plumber must be overseeing the job. Colorado DORA licenses are issued to individual tradespeople, not companies. Always ask for the individual license number, not just the company name. Any plumbing service should be backed by verifiable individual credentials before work begins.

How to Use the DORA License Lookup Tool

The official lookup is free and takes only a few minutes. DORA's License Lookup at dora.colorado.gov covers electricians, plumbers, and other regulated trades, providing license type, status, and disciplinary history.


Here is how to run the search:


  1. Go to dora.colorado.gov and navigate to the license lookup portal.
  2. Enter the contractor's first and last name and select the appropriate license type from the dropdown.
  3. Enter the security code and click "Search."
  4. Review their license status, expiration date, and any disciplinary flags.
  5. Status designations include active, inactive, suspended, and revoked. "Inactive" means the credential has lapsed; "revoked" reflects a formal adjudicated action.


Only accept "active" status before moving forward. Running this check before scheduling any plumbing service in Greeley, CO takes minutes and could save you significant time and money.

What to Ask Before You Book

Beyond the DORA check, ask every plumber these questions before scheduling:


  • Ask for their individual license number so you can verify it on DORA yourself.
  • Ask for proof of insurance. Your plumber should carry general liability insurance and workers' compensation. Liability protects your property from accidental damage; workers' comp covers employees injured on the job.
  • Ask whether a Master Plumber will supervise the work and pull any required permits.
  • Ask for their contractor registration number. As of July 1, 2025, Colorado requires plumbing contractors to display both their license and registration numbers on vehicles, billing materials, bid sheets, and websites.


A reputable plumber will answer all of these questions without hesitation.

Frequently Asked Questions

Is a DORA License Required for All Plumbers in Colorado?


Yes, for any plumber working for hire. Under C.R.S. § 12-155-122, working as a plumber without an active license, permit, or registration is subject to penalties. This applies throughout Colorado, including Greeley and Weld County. Any legitimate plumbing service will provide active license numbers upon request.

What if the Plumber Only Works for a Licensed Company?



Individual-level credentials still apply. The company's registration and the technician's personal license are two separate things. Ask for both.

Can Hiring an Unlicensed Plumber Void My Homeowner's Insurance?


It can. Under Colorado's Consumer Protection Act, failure to obtain necessary licenses or permits may constitute a deceptive trade practice. Insurance policy terms vary, so review your coverage and confirm with your insurer.

Where Can I Find a Licensed Plumber in Greeley, CO?Where Can I Find a Licensed Plumber in Greeley, CO?



Start with the DORA lookup, then look for companies that openly display license numbers and insurance certificates. Asking for references specific to Greeley or Weld County projects can confirm local experience. A qualified plumbing service will welcome these questions and provide documentation readily.

Book a Licensed Team You Can Verify Today

Verifying a plumber's license in Colorado takes less than five minutes using the DORA portal. That small step may protect you from voided insurance claims, costly repairs, and legal headaches. For residents in Northern Colorado who want a licensed, insured team they can verify before booking, we offer a plumbing service in Greeley, CO backed by state credentials and round-the-clock availability.


Contact Roto-Rooter today to schedule service or ask about credentials, or call (970) 356-7686 for immediate assistance. You can also check our Google Business Profile to read our clients' reviews and learn more about us.

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