Contractor License Requirements in Colorado

Colorado does not require a state-level general contractor license. However, certain specialty trades such as electricians and plumbers must be licensed. Many local jurisdictions in Colorado have their own contractor registration and licensing requirements that may be more stringent than state-level regulations. Colorado does not require a general contractor license at the state level. However, electricians and plumbers must be licensed through the state. Many local jurisdictions (Denver, Colorado Springs, etc.) require contractor registration or licensing. Always check city and county requirements.

Important

Never hire a contractor who cannot provide a valid license number. A legitimate contractor will have no hesitation sharing their license credentials for you to verify independently. If a contractor refuses, discourages you from checking, or makes excuses, treat that as a serious red flag.

Colorado Department of Regulatory Agencies (DORA)

Search by: License number, Last name, Business name

Follow these steps to verify a contractor's license in Colorado:

1. 1
   Understand Colorado's licensing structureColorado does not license general contractors at the state level. The state licenses electricians and plumbers through DORA. For general contractors, check your local city or county requirements -- Denver, Colorado Springs, Aurora, and most major cities have their own registration systems.
2. 2
   Search the DORA license lookup for trade licensesVisit the Colorado DORA license lookup for electrician and plumber licenses. Enter the contractor's license number, name, or business name to verify their state trade license.
3. 3
   Check your local jurisdiction's contractor requirementsContact your city or county building department to verify if the contractor holds the required local license or registration. Denver, for example, requires general contractor licensing through the Denver Excise and Licenses department.
4. 4
   Verify insurance directly with the contractorSince Colorado does not require insurance at the state level for general contractors, ask the contractor directly for a certificate of general liability insurance and workers' compensation coverage. Verify the certificate is current and the coverage amounts are adequate.
5. 5
   Check the Better Business Bureau and local complaint recordsWithout a state licensing board for general contractors, check the BBB, local consumer protection office, and online reviews for complaint history. The Colorado Attorney General's office also handles consumer complaints.

What to Look for in Verification Results

• For electricians and plumbers, verify the state license is active through DORA
• Check local city/county licensing for general contractors
• Request proof of general liability and workers' compensation insurance
• Verify the contractor's local business registration
• Check for complaints with the Colorado Attorney General's office
• Confirm the license level (journeyman vs. master) matches the scope of work

Hiring an unlicensed contractor in Colorado carries significant risks for both the homeowner and the contractor:

• No consumer protections: State recovery funds and guaranty programs typically only cover work performed by licensed contractors.
• Insurance issues: Your homeowner's insurance may deny claims related to work done by an unlicensed contractor.
• Permit problems: Building permits often require a valid contractor license. Work done without permits can create issues when selling your property.
• Quality concerns: Licensed contractors have demonstrated minimum competency through exams, experience requirements, or both.
• Legal liability: Homeowners may bear greater legal responsibility for injuries or property damage caused during unlicensed work.

Colorado does not currently have reciprocal contractor licensing agreements with other states. Contractors licensed in other states must apply for a new Colorado license through the standard application process. Some states may credit out-of-state experience toward licensing requirements -- contact the Colorado Department of Regulatory Agencies (DORA) for details.