> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cslid.nascla.memorang.app/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Colorado

> Contractor licensing thresholds, regulator routing, requirements, reciprocity, and license types for Colorado's hybrid construction regulation model.

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.

<Warning>
  Always verify statutes, fees, and application details with the live regulator before making bidding, licensing, or legal decisions.
</Warning>

## 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.

| Signal                          | Value                                                             |
| ------------------------------- | ----------------------------------------------------------------- |
| General contractor license      | No statewide license — regulated by cities and counties           |
| Electrical work                 | State-level licensing required                                    |
| Plumbing work                   | State-level licensing required                                    |
| Highway prequalification tier 1 | Up to **\$3,000,000** — compiled financial statement              |
| Highway prequalification tier 2 | **\$3,000,000** to **\$5,000,000** — reviewed financial statement |
| Highway prequalification tier 3 | **\$5,000,000** and over — audited financial statement            |
| Reciprocity model               | Journeyman electrical only — 14 states                            |

## Frequently asked questions

Pick the tab that matches your situation. Each FAQ gives a direct answer and points you to the full detail below.

<Tabs>
  <Tab title="Contractors" icon="hard-hat">
    <AccordionGroup>
      <Accordion title="Does Colorado have a statewide general contractor license?">
        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](#construction-work-regulated).
      </Accordion>

      <Accordion title="How do I get an electrical contractor license in Colorado?">
        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](#requirements).
      </Accordion>

      <Accordion title="What are the requirements for plumbing contractor licensing?">
        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](#requirements).
      </Accordion>

      <Accordion title="Where do I go to get licensed for electrical or plumbing work?">
        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](#who-regulates-construction).
      </Accordion>

      <Accordion title="What are the CDOT highway prequalification tiers?">
        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](#requirements).
      </Accordion>

      <Accordion title="Can I use my out-of-state license in Colorado?">
        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](#reciprocal-agreements).
      </Accordion>

      <Accordion title="What experience is needed for a journeyman electrician license?">
        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](#requirements).
      </Accordion>

      <Accordion title="Does Colorado require a license for HVAC work?">
        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.
      </Accordion>

      <Accordion title="Does Colorado require a license for residential construction?">
        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](#construction-work-regulated).
      </Accordion>

      <Accordion title="What are the bonding requirements for highway work?">
        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](#requirements).
      </Accordion>
    </AccordionGroup>
  </Tab>

  <Tab title="Regulators" icon="shield-check">
    <AccordionGroup>
      <Accordion title="How does Colorado divide construction regulation between state and local authorities?">
        Colorado regulates only electrical and plumbing at the state level, plus CDOT highway prequalification. All other construction — general, residential, HVAC, roofing, etc. — is regulated by local cities and counties. This hybrid model is unusual compared to states with comprehensive statewide licensing. See [Construction work regulated](#construction-work-regulated).
      </Accordion>

      <Accordion title="What trades does Colorado regulate at the state level?">
        Only two trades: electrical (through the State Electrical Board) and plumbing (through the Examining Board of Plumbers). Everything else, including general contracting, HVAC, and specialty trades, is left to local jurisdictions. See [Who regulates construction](#who-regulates-construction).
      </Accordion>

      <Accordion title="How does Colorado's DOT prequalification process work?">
        CDOT uses a three-tier financial documentation system: compiled (up to **\$3,000,000**), reviewed (**\$3,000,000** to **\$5,000,000**), and audited (**\$5,000,000**+). Prequalification renews annually with approximately 15-day processing time. Bids are solicited electronically via Bid Express. See [Requirements](#requirements).
      </Accordion>

      <Accordion title="How does Colorado's hybrid model compare to centralized states?">
        Colorado's approach is fragmented compared to states like California (single board for all trades) or Utah (single commission). The absence of a statewide general contractor license means no state-level threshold, exam, or bond for general work. This shifts the regulatory burden to hundreds of local jurisdictions.
      </Accordion>

      <Accordion title="What are the experience requirements across trades?">
        Master electricians need 5 years. Journeyman electricians need 4 years. Residential wiremen need 2 years. Master plumbers need 5 years or 8,500 hours. Journeyman plumbers need 4 years or 6,800 hours. Residential plumbers need 2 years or 3,400 hours. See [Requirements](#requirements).
      </Accordion>

      <Accordion title="How does journeyman electrical reciprocity work?">
        Colorado reciprocates with 14 states for journeyman electricians: Alaska, Arkansas, Idaho, Iowa, Minnesota, Montana, Nebraska, New Hampshire, New Mexico, North Dakota, Oklahoma, South Dakota, Utah, and Wyoming. This is one of the broader electrical reciprocity networks. See [Reciprocal agreements](#reciprocal-agreements).
      </Accordion>

      <Accordion title="What license classifications does Colorado use?">
        Electrical: Master Electrician, Journeyman Electrician, Residential Wireman, Apprentice Registration, Electrical Contractor Registration. Plumbing: Master Plumber, Journeyman Plumber, Residential Plumber, Apprentice Registration, Plumber Contractor Registration. See [Types of licenses](#types-of-licenses).
      </Accordion>

      <Accordion title="What exam requirements exist?">
        Master electricians must pass the master electrician examination. Journeyman electricians and residential wiremen must pass their respective exams. Plumbers at all levels (master, journeyman, residential) must pass examinations. See [Requirements](#requirements).
      </Accordion>

      <Accordion title="What are the renewal cycles?">
        Electrical and plumbing license renewal details should be confirmed with the respective boards. CDOT prequalification renews annually. General contractor licensing at the local level varies by jurisdiction.
      </Accordion>

      <Accordion title="How does Colorado compare to neighboring Western states?">
        Colorado is less regulated than Nevada (universal licensure), California (**\$1,000** threshold), or Utah (**\$3,000** threshold). It is more similar to Wyoming (electrical-only at state level). The 14-state journeyman electrical reciprocity network is a strength. See [Licensing thresholds](/docs/compare/licensing-thresholds).
      </Accordion>
    </AccordionGroup>
  </Tab>
</Tabs>

## Start with your goal

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

<CardGroup cols={2}>
  <Card title="Is licensure triggered?" icon="search" href="#construction-work-regulated">
    Start with the type of work to determine whether Colorado regulates it at the state level.
  </Card>

  <Card title="Find the right regulator" icon="building" href="#who-regulates-construction">
    Use the regulator directory to route your question to the correct Colorado board or agency.
  </Card>

  <Card title="Application and renewal details" icon="clipboard-list" href="#requirements">
    Exams, experience, bonds, and prequalification tiers for each regulated trade.
  </Card>

  <Card title="Reciprocity direction" icon="arrow-left-right" href="#reciprocal-agreements">
    Find out which states have journeyman electrical reciprocity and plumbing endorsement options.
  </Card>
</CardGroup>

## 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.

<Tabs>
  <Tab title="Contractors" icon="hard-hat">
    <Tip>
      Start with work type, not dollar amount. Colorado has no statewide general contractor threshold — state licensing applies only to electrical, plumbing, and highway work.
    </Tip>

    * 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.
  </Tab>

  <Tab title="Regulators" icon="shield-check">
    <Info>
      Colorado uses a hybrid model: state boards cover electrical and plumbing only, CDOT handles highway prequalification, and general contractors fall to local regulation.
    </Info>

    * The state operates 3 separate regulatory entities for construction: State Electrical Board, Examining Board of Plumbers, and CDOT.
    * The Electrical Board and Plumbing Board share an address and phone number but are distinct entities.
    * General contractor licensing is entirely a local matter — there is no statewide board to compare.
    * Reciprocity exists for journeyman electricians only (14 states), not for plumbing or general contractors.
  </Tab>
</Tabs>

## 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.

<Steps>
  <Step title="Determine state vs. local jurisdiction" icon="tag">
    Identify whether your work is electrical, plumbing, or highway (state-regulated) or general construction (locally regulated).
  </Step>

  <Step title="Apply the right threshold or tier" icon="receipt">
    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.
  </Step>

  <Step title="Route to the correct regulator" icon="building">
    Use the regulator directory below. Do not assume Colorado has a statewide general contractor board — it does not.
  </Step>

  <Step title="Confirm the requirement set" icon="clipboard-check">
    Confirm exams, experience hours, bonds, workers' compensation compliance, and reciprocity eligibility before filing.
  </Step>
</Steps>

<Check>
  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.
</Check>

## Navigation

Use these links to jump to related cross-state comparisons and workflows.

* [New state evaluation](/docs/workflows/new-state-evaluation) if you are screening Colorado for the first time.
* [Multi-state bid readiness](/docs/workflows/multi-state-bid-readiness) if you need to compare Colorado with nearby jurisdictions.
* [Licensing thresholds](/docs/compare/licensing-thresholds) or [prequalification patterns](/docs/compare/prequalification) for cross-state context.

## 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.

| Work lane                             | What triggers regulation                                  |
| ------------------------------------- | --------------------------------------------------------- |
| Electrical work                       | State license required (State Electrical Board)           |
| Plumbing work                         | State license required (Examining Board of Plumbers)      |
| Highway, bridge, or road construction | CDOT prequalification required                            |
| General construction                  | Regulated by local cities and counties — no state license |

<Note>
  Some cities and counties impose their own licensing requirements for general contractors. Check with the local jurisdiction where the project is located.
</Note>

## Common determination scenarios

If you are trying to figure out where to start, expand the scenario that is closest to your situation.

<AccordionGroup>
  <Accordion title="Electrical installation or wiring project" icon="bolt">
    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.
  </Accordion>

  <Accordion title="Plumbing project" icon="tool">
    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.
  </Accordion>

  <Accordion title="Highway or bridge construction" icon="road">
    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.
  </Accordion>

  <Accordion title="General building construction" icon="building">
    Colorado has no statewide general contractor license. Check the city or county where the project is located for local licensing, permitting, and bonding requirements.
  </Accordion>

  <Accordion title="Reciprocity request" icon="arrow-left-right">
    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.
  </Accordion>
</AccordionGroup>

## 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.

<AccordionGroup>
  <Accordion title="Highway prequalification — Colorado Department of Transportation (CDOT)" icon="road" defaultOpen={true}>
    2829 West Howard Place, Suite 300, Denver, CO 80204

    **Phone:** (303) 757-9418

    **Email:** [danielle.mire@state.co.us](mailto:danielle.mire@state.co.us)

    **Website:** [codot.gov](http://www.codot.gov/)

    Bidding portal: [codot.gov/business/bidding](http://www.codot.gov/business/bidding)

    Prequalification portal: [cdot.dbesystem.com](https://cdot.dbesystem.com/)
  </Accordion>

  <Accordion title="Electrical licensing — Colorado State Electrical Board" icon="bolt">
    1560 Broadway, Suite 1350, Denver, CO 80202

    **Phone:** (303) 894-7800 | **Fax:** (303) 894-2310

    **Website:** [dpo.colorado.gov/Electrical](https://dpo.colorado.gov/Electrical)
  </Accordion>

  <Accordion title="Plumbing licensing — Colorado Examining Board of Plumbers" icon="tool">
    1560 Broadway, Suite 1350, Denver, CO 80202

    **Phone:** (303) 894-7800 | **Fax:** (303) 894-2310

    **Website:** [dpo.colorado.gov/Plumbing](https://dpo.colorado.gov/Plumbing)
  </Accordion>
</AccordionGroup>

## 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.

<AccordionGroup>
  <Accordion title="Highway Prequalification (CDOT)" icon="road" defaultOpen={true}>
    | Requirement | Detail                                                                                                                                 |
    | ----------- | -------------------------------------------------------------------------------------------------------------------------------------- |
    | Basis       | Financial limits set from financial statements and bonding capacity letters                                                            |
    | Renewal     | Annual; average processing time approximately 15 days                                                                                  |
    | Bonds       | Performance and payment bonds required on all CDOT-awarded contracts                                                                   |
    | Bidding     | Bids solicited electronically via Bid Express; design-build, CM-GC, and best-value projects exempt from electronic bidding requirement |

    | Prequalification tier              | Required documentation                                           |
    | ---------------------------------- | ---------------------------------------------------------------- |
    | Up to **\$3,000,000**              | Compiled financial statement plus bonding capacity documentation |
    | **\$3,000,000** to **\$5,000,000** | Reviewed financial statement plus bonding capacity documentation |
    | **\$5,000,000** and over           | Audited financial statement plus bonding capacity documentation  |
  </Accordion>

  <Accordion title="Electricians" icon="bolt">
    | Requirement                       | Detail                                                                                                                                                   |
    | --------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- |
    | Master electrician experience     | 5 years total: 4 years electrical construction wiring (minimum 2 years commercial/industrial), plus 1 year planning, layout, supervising, and installing |
    | Master electrician exam           | Must pass master electrician examination                                                                                                                 |
    | Journeyman electrician experience | 4 years of experience                                                                                                                                    |
    | Residential wireman experience    | 2 years of residential experience                                                                                                                        |
    | Contractor requirement            | Must employ a full-time master electrician registered with the State Board                                                                               |
    | Compliance                        | Workers' compensation and unemployment compensation required for contractor applications                                                                 |
  </Accordion>

  <Accordion title="Plumbers" icon="tool">
    | Requirement                    | Detail                                                                  |
    | ------------------------------ | ----------------------------------------------------------------------- |
    | Master plumber experience      | 5 years or 8,500 hours                                                  |
    | Journeyman plumber experience  | 4 years or 6,800 hours                                                  |
    | Residential plumber experience | 2 years or 3,400 hours                                                  |
    | Exam                           | Examination required for master, journeyman, and residential applicants |
  </Accordion>
</AccordionGroup>

## 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).

<Info>
  Reciprocity in Colorado is narrow: journeyman electrical only. For plumbing endorsement, contact the Examining Board of Plumbers directly.
</Info>

| Board                                    | Reciprocal states                                                                                                                           | Coverage                               |
| ---------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------- |
| State Electrical Board (journeyman only) | Alaska, Arkansas, Idaho, Iowa, Minnesota, Montana, Nebraska, New Hampshire, New Mexico, North Dakota, Oklahoma, South Dakota, Utah, Wyoming | <Badge color="green">14 states</Badge> |
| Examining Board of Plumbers              | Endorsement possible in some cases — contact board                                                                                          | <Badge color="yellow">Limited</Badge>  |

## 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.

<AccordionGroup>
  <Accordion title="Electrical" icon="bolt" defaultOpen={true}>
    **Licenses:**

    * Master Electrician
    * Journeyman Electrician
    * Residential Wireman

    **Registrations:**

    * Apprentice Registration
    * Electrical Contractor Registration
  </Accordion>

  <Accordion title="Plumbing" icon="tool">
    **Licenses:**

    * Master Plumber
    * Journeyman Plumber
    * Residential Plumber

    **Registrations:**

    * Apprentice Registration
    * Plumber Contractor Registration
  </Accordion>
</AccordionGroup>

## See also

<CardGroup cols={2}>
  <Card title="West region guide" icon="map" href="/docs/jurisdictions/regions/west">
    Browse all West jurisdictions for comparison.
  </Card>

  <Card title="Contractors guide" icon="hard-hat" href="/docs/personas/contractor">
    Cross-state guidance for contractors evaluating new jurisdictions.
  </Card>

  <Card title="Regulators guide" icon="shield-check" href="/docs/personas/regulatory-staff">
    Cross-state guidance for comparing regulatory models and agency structures.
  </Card>
</CardGroup>

**Neighboring jurisdictions with reciprocity ties:**

<CardGroup cols={3}>
  <Card title="Wyoming" icon="map-pin" href="/docs/jurisdictions/wyoming">
    Journeyman electrical reciprocity with Colorado.
  </Card>

  <Card title="Utah" icon="map-pin" href="/docs/jurisdictions/utah">
    Journeyman electrical reciprocity with Colorado.
  </Card>

  <Card title="New Mexico" icon="map-pin" href="/docs/jurisdictions/new-mexico">
    Journeyman electrical reciprocity with Colorado.
  </Card>
</CardGroup>