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Colorado uses a hybrid model. There is no statewide general contractor license — general contractors are regulated by cities and counties. The state only licenses electrical and plumbing work directly, while highway and bridge projects require separate CDOT prequalification.
Always verify statutes, fees, and application details with the live regulator before making bidding, licensing, or legal decisions.

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At a glance

The fastest way to orient yourself in Colorado is to understand that the state regulates only two trades directly, plus highway prequalification. General contracting is a local matter.

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Frequently asked questions

Pick the tab that matches your situation. Each FAQ gives a direct answer and points you to the full detail below.
No. Colorado does not have a statewide general contractor license. General contractors are regulated by local cities and counties. Check with the jurisdiction where the project is located for local licensing, permitting, and bonding requirements. See Construction work regulated.
Electrical contractors must employ a full-time master electrician registered with the State Electrical Board. Master electricians need 5 years of experience (4 years electrical construction wiring with minimum 2 years commercial/industrial, plus 1 year planning and supervising) and must pass the master electrician exam. Workers’ compensation and unemployment compensation compliance are required. See Requirements.
Plumbing requires a state license from the Examining Board of Plumbers. Master plumbers need 5 years or 8,500 hours of experience. Journeyman plumbers need 4 years or 6,800 hours. Residential plumbers need 2 years or 3,400 hours. An exam is required for all levels. See Requirements.
Both the State Electrical Board and the Examining Board of Plumbers are located at 1560 Broadway, Suite 1350, Denver, CO 80202. Phone: (303) 894-7800. They share an address but are distinct regulatory entities. See Who regulates construction.
CDOT uses three tiers based on financial documentation: compiled financial statements allow up to $3,000,000, reviewed statements allow $3,000,000 to $5,000,000, and audited statements allow $5,000,000 and above. Performance and payment bonds are required on all CDOT contracts. Processing takes approximately 15 days. See Requirements.
Reciprocity exists only for journeyman electricians from 14 specific states: Alaska, Arkansas, Idaho, Iowa, Minnesota, Montana, Nebraska, New Hampshire, New Mexico, North Dakota, Oklahoma, South Dakota, Utah, and Wyoming. Plumbing licenses may be obtainable by endorsement — contact the Board directly. There is no reciprocity for general contractors. See Reciprocal agreements.
Journeyman electricians need 4 years of experience. Residential wiremen need 2 years of residential experience. These are separate from the master electrician’s 5-year requirement. See Requirements.
Colorado does not license HVAC work at the state level. HVAC contractor licensing is handled locally by cities and counties, similar to general contracting. Only electrical and plumbing trades are state-regulated.
There is no statewide license for residential construction. Local jurisdictions set their own requirements. If the project involves electrical or plumbing work, those trades require state-level licenses regardless of the project type. See Construction work regulated.
Performance and payment bonds are required on all CDOT-awarded contracts. The prequalification tier determines the maximum project size you can bid on. Prequalification renews annually. See Requirements.

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Start with your goal

Pick the card that matches what you need right now. Each one links to the relevant section on this page.

Is licensure triggered?

Start with the type of work to determine whether Colorado regulates it at the state level.

Find the right regulator

Use the regulator directory to route your question to the correct Colorado board or agency.

Application and renewal details

Exams, experience, bonds, and prequalification tiers for each regulated trade.

Reciprocity direction

Find out which states have journeyman electrical reciprocity and plumbing endorsement options.

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Special considerations

Different roles need different things from a Colorado page. Use the tab that matches your situation to see what matters most before you read the full detail below.
Start with work type, not dollar amount. Colorado has no statewide general contractor threshold — state licensing applies only to electrical, plumbing, and highway work.
  • There is no statewide general contractor license. General contractors are regulated by local jurisdictions (cities and counties).
  • Electrical and plumbing work require state-level licenses from their respective boards.
  • Highway, bridge, and road projects require CDOT prequalification, tiered by project value at $3,000,000 and $5,000,000.
  • Electrical contractors must employ a full-time master electrician registered with the State Board.
  • Workers’ compensation and unemployment compensation compliance are required for electrical contractor applications.
  • Plumbing licenses may be obtainable by endorsement in some cases — contact the Board directly.

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Readiness checklist

Four things you need to confirm before you can treat Colorado as “ready” for a bid or an application. If any of these are unclear, you are not ready yet.

Determine state vs. local jurisdiction

Identify whether your work is electrical, plumbing, or highway (state-regulated) or general construction (locally regulated).

Apply the right threshold or tier

For highway work, determine your prequalification tier: compiled up to $3,000,000, reviewed up to $5,000,000, audited above $5,000,000. For electrical and plumbing, confirm experience requirements.

Route to the correct regulator

Use the regulator directory below. Do not assume Colorado has a statewide general contractor board — it does not.

Confirm the requirement set

Confirm exams, experience hours, bonds, workers’ compensation compliance, and reciprocity eligibility before filing.
If you can determine jurisdiction level, applicable tier or experience requirement, correct regulator, and full requirement set, you have the minimum package needed for a Colorado readiness check.
Use these links to jump to related cross-state comparisons and workflows.

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Construction work regulated

Colorado does not have a statewide general contractor license. State-level regulation applies only to electrical work, plumbing work, and highway prequalification. General construction licensing varies by city and county.
Some cities and counties impose their own licensing requirements for general contractors. Check with the local jurisdiction where the project is located.

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Common determination scenarios

If you are trying to figure out where to start, expand the scenario that is closest to your situation.
All electrical work requires a state license. Master electricians need 5 years of experience (including 2 years commercial/industrial); journeymen need 4 years; residential wiremen need 2 years. Electrical contractors must employ a full-time state-registered master electrician.
All plumbing work requires a state license. Experience requirements are 8,500 hours for master, 6,800 hours for journeyman, and 3,400 hours for residential. Endorsement may be available for out-of-state plumbers — contact the Board.
State highway and bridge projects require CDOT prequalification. Financial documentation requirements increase with project value. Performance and payment bonds are required on all CDOT-awarded contracts. Prequalification renews annually with approximately 15-day processing time.
Colorado has no statewide general contractor license. Check the city or county where the project is located for local licensing, permitting, and bonding requirements.
Reciprocity applies only to journeyman electricians from 14 specific states. Plumbing licenses may be obtainable by endorsement — contact the Examining Board of Plumbers for details. There is no reciprocity for general contractors.

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Who regulates construction

Colorado splits state-level construction regulation across 3 entities. General contractor licensing is handled locally. Use this directory to find the right contact for your situation.

Highway prequalification — Colorado Department of Transportation (CDOT)

2829 West Howard Place, Suite 300, Denver, CO 80204Phone: (303) 757-9418Email: danielle.mire@state.co.usWebsite: codot.govBidding portal: codot.gov/business/biddingPrequalification portal: cdot.dbesystem.com
1560 Broadway, Suite 1350, Denver, CO 80202Phone: (303) 894-7800 | Fax: (303) 894-2310Website: dpo.colorado.gov/Electrical
1560 Broadway, Suite 1350, Denver, CO 80202Phone: (303) 894-7800 | Fax: (303) 894-2310Website: dpo.colorado.gov/Plumbing

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Requirements

Each Colorado board has its own experience, exam, and compliance requirements. CDOT prequalification operates on a separate tiered system based on project value. Expand the section that applies to your situation.

Highway Prequalification (CDOT)

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Reciprocal agreements

Colorado maintains reciprocity for journeyman electricians only. Plumbing licenses may be available by endorsement in some cases. There is no reciprocity for general contractors (which are not state-licensed).
Reciprocity in Colorado is narrow: journeyman electrical only. For plumbing endorsement, contact the Examining Board of Plumbers directly.

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Types of licenses

Colorado issues licenses and registrations for two trades at the state level. Use this section to confirm the exact credential name for an application or comparison.

Electrical

Licenses:
  • Master Electrician
  • Journeyman Electrician
  • Residential Wireman
Registrations:
  • Apprentice Registration
  • Electrical Contractor Registration
Licenses:
  • Master Plumber
  • Journeyman Plumber
  • Residential Plumber
Registrations:
  • Apprentice Registration
  • Plumber Contractor Registration

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See also

West region guide

Browse all West jurisdictions for comparison.

Contractors guide

Cross-state guidance for contractors evaluating new jurisdictions.

Regulators guide

Cross-state guidance for comparing regulatory models and agency structures.
Neighboring jurisdictions with reciprocity ties:

Wyoming

Journeyman electrical reciprocity with Colorado.

Utah

Journeyman electrical reciprocity with Colorado.

New Mexico

Journeyman electrical reciprocity with Colorado.