Colorado Contractor Licenses: Updated Requirements Guide

Colorado licensing for contractors is a blend of state and local regulation. Electrical and plumbing licenses are issued statewide by the Colorado Department of Regulatory Agencies (DORA), while most building, general contracting, roofing, mechanical/HVAC, and other specialty contractor credentials are issued by individual cities and counties.

This guide aggregates 2025 state and local requirements from the official boards and major Colorado jurisdictions. It explains every major trade (electrician, plumbing, HVAC/mechanical, general contractor, roofing, and specialty), how local licensing works, what exams and paperwork are needed, and where to apply.

Always verify details with the licensing authority where you plan to work, as requirements can change and local jurisdictions may have different classifications, exams, and insurance thresholds.

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Overview of Colorado Contractor Licensing

Colorado’s contractor landscape splits responsibilities between the state and local governments. DORA’s Electrical and Plumbing Boards license individual electricians and plumbers statewide, including the business-level electrical and plumbing contractor registrations tied to a responsible master. In contrast, general contractors, roofers, mechanical/HVAC, and many specialty contractors are licensed by cities and counties (e.g., Denver, Larimer County, Boulder).

Because local jurisdictions set their own classifications and experience standards, you may need to hold different license types or registrations to work across city or county lines. Electrical and plumbing licensees typically use their state credentials everywhere in Colorado, but you may still need to register your business locally and pull permits within each jurisdiction.

Primary Licensing Authority

Colorado Department of Regulatory Agencies (DORA) – Electrical and Plumbing Boards; Local Jurisdictions for General/Specialty

Browse all Colorado contractor license practice tests →

Electrician Licenses in Colorado

Colorado regulates electrical work with 5 license types. All electrical licenses are issued by the state through DORA’s Electrical Board. Local jurisdictions may still require business registration and permits for projects performed within their borders.

Note: Electrical licenses are state-issued by DORA. Separate local business registration and permits may be required by the city or county where you work.

Apprentice Electrician

Requirements

Experience: None required to start. Apprentices must log hours under a licensed electrician; hours are verified via supervisor logs or employer affidavits reported to DORA. A total of 8,000 hours is needed to qualify for Journeyman.

Education: None for registration. Exam: Not required at the apprentice level.

Fees

Application: $30 | Initial License: $30 | Renewal: $30 | Late Penalty: $15

Renewal

Annual renewal. Continuing education is not required for apprentices.

Source: DORA Electrical Board

Residential Wireman

Requirements

Experience: 4,000 hours of residential electrical construction work, verified by employer affidavits submitted to the board.

Exam: Required. Provider: PSI.

Exam Details

Name: Colorado Residential Wireman Examination | Format: Multiple choice, closed book | Questions: 90 | Duration: 4 hours | Passing Score: 70%

Allowed References: 2017 NEC; Code of Colorado Regulations.

Topics: NEC requirements; residential wiring methods; services; grounding; safety.

Retake Policy: May retake after 30-day wait; new fee required.

Fees

Application: $140 | Examination: $75 | Initial License: $30 | Renewal: $30 | Late Penalty: $15

Renewal

Annual renewal. Continuing Education: 24 hours per 3-year cycle, typically covering NEC changes, safety, and code updates.

Source: DORA Electrical Board

Journeyman Electrician

Requirements

Experience: 8,000 hours of electrical construction work (about 4 years), including 2,000 hours in commercial/industrial. Hours are verified via notarized employer affidavits submitted to DORA.

Exam: Required. Provider: PSI.

Exam Details

Name: Colorado Journeyman Electrician Examination | Format: Multiple choice, closed book | Questions: 90 | Duration: 4 hours | Passing Score: 70%

Allowed References: 2017 NEC; Code of Colorado Regulations.

Topics: NEC requirements; grounding; commercial and residential wiring; motors; transformers.

Retake Policy: Retake after 30 days; new exam fee required.

Fees

Application: $140 | Examination: $75 | Initial License: $30 | Renewal: $30 | Late Penalty: $15

Renewal

Annual renewal. Continuing Education: 24 hours per 3-year cycle (NEC code changes, electrical safety, Colorado amendments).

📚 Exam Prep: Use the Colorado Journeyman Wireman Practice Test. PDF study guides typically provide 1,500–2,500 questions with answer keys and reference locators to exact NEC sections. Study offline at your own pace with no use limits.

Source: DORA Electrical Board

Master Electrician

Requirements

Experience: At least 2 years as a licensed Journeyman Electrician (generally 4,000 hours after journeyman licensure), confirmed via employer affidavits to DORA.

Exam: Required. Provider: PSI.

Exam Details

Name: Colorado Master Electrician Examination | Format: Multiple choice, closed book | Questions: 105 | Duration: 4.5 hours | Passing Score: 70%

Allowed References: 2017 NEC; Code of Colorado Regulations.

Topics: Advanced NEC; design/calculation; contracts; supervision; state/federal regulations.

Retake Policy: Retake after 30 days; new exam fee required.

Fees

Application: $140 | Examination: $75 | Initial License: $30 | Renewal: $30 | Late Penalty: $15

Renewal

Annual renewal. Continuing Education: 24 hours per 3-year cycle (advanced code changes, business practices, state amendments).

📚 Exam Prep: Prepare with the Colorado Master Electrician Practice Test. PDF study materials typically include 1,500–2,500 questions, detailed answer keys, and reference locators for fast code lookups. Study offline, unlimited use.

Source: DORA Electrical Board

Electrical Contractor

Requirements

Qualifying Individual: Must employ a Colorado-licensed Master Electrician full time. Provide master’s name and license number.

Business: Register the business with the Colorado Secretary of State and submit proof of required liability insurance.

Exam: Not required for the business registration.

Insurance

General liability: $1,000,000; Property damage: $500,000.

Fees

Application: $190 | Initial License: $190 | Renewal: $190 | Late Penalty: $95

Renewal

Annual renewal. Continuing education requirements apply to the individual license holders (e.g., master, journeyman), not the business registration.

Source: DORA Electrical Board

Looking for curated exam prep across electrician license levels? Browse Colorado contractor license practice tests and study material.

Plumbing Licenses in Colorado

Colorado regulates plumbing statewide with four license types: Apprentice, Journeyman, Master, and Plumbing Contractor (business). The Colorado Plumbing Board (DORA) manages all applications, exams, and renewals for individual licenses and the business-level contractor registration linked to a responsible master plumber.

Note: Plumbing licenses are state-issued by DORA. You may still need to register your business and pull permits in each city or county where you work.

Apprentice Plumber

Requirements

Experience: None required to register; apprentices must accrue hours under a licensed plumber. Hours are tracked through employer-signed affidavits and reported to the state.

Education: None required to register. Exam: Not required at the apprentice level.

Fees

Application: $30 | Initial License: $30 | Renewal: $30 | Late Penalty: $15

Renewal

Annual renewal. Continuing education not required for apprentices.

Source: DORA Plumbing Board

Journeyman Plumber

Requirements

Experience: 8,000 hours (about 4 years) of experience under a licensed plumber, verified via employment affidavits to the state.

Exam: Required. Provider: PSI.

Exam Details

Name: Colorado Journeyman Plumber Exam | Format: Multiple choice, closed book | Questions: 100 | Duration: 3 hours | Passing Score: 70%

Allowed References: 2018 IPC; 2017 Colorado Plumbing Code.

Topics: Fixture requirements; venting; backflow prevention; water heaters; state plumbing regulations.

Retake Policy: Retake permitted after 30 days.

Fees

Application: $140 | Examination: $75 | Initial License: $30 | Renewal: $30 | Late Penalty: $15

Renewal

Annual renewal. Continuing Education: 8 hours per 1-year cycle (2024 onward), including code updates and safety.

📚 Exam Prep: Study with the Colorado Journeyworker Plumber Practice Test. Materials are PDF-based, typically 1,500–2,500 questions with full answer keys and exact code reference locators. Offline use; unlimited access.

Source: DORA Plumbing Board

Master Plumber

Requirements

Experience: At least 2,000 hours as a licensed Journeyman Plumber after gaining journeyman status, documented by notarized employment affidavits.

Exam: Required. Provider: PSI.

Exam Details

Name: Colorado Master Plumber Exam | Format: Multiple choice, closed book | Questions: 120 | Duration: 4 hours | Passing Score: 70%

Allowed References: 2018 IPC; Colorado Plumbing Code; state business law.

Topics: Advanced code analysis; supervision; business law; plumbing design.

Retake Policy: Retake permitted after 30 days with new fee.

Fees

Application: $140 | Examination: $75 | Initial License: $30 | Renewal: $30 | Late Penalty: $15

Renewal

Annual renewal. Continuing Education: 8 hours per year (current code update required), including code changes and business/supervision topics.

📚 Exam Prep: Use the Colorado Master Plumber Practice Test. PDF study guides typically include 1,500–2,500 questions, detailed answer keys, and reference locators to exact code sections. Study offline at your pace with no usage limits.

Source: DORA Plumbing Board

Plumbing Contractor (Business)

Requirements

Qualifying Individual: Must employ a Colorado-licensed Master Plumber full time. Submit proof of the company’s responsible master and register the business with the Secretary of State.

Exam: Not required for the business registration.

Insurance

General liability: $1,000,000; Property damage: $500,000.

Fees

Application: $190 | Initial License: $190 | Renewal: $190 | Late Penalty: $95

Renewal

Annual renewal. Continuing education applies to the individual license holders, not the business registration.

Source: DORA Plumbing Board

For additional plumbing code prep across license levels, browse Colorado contractor license practice tests and study material.

HVAC Licenses in Colorado

Colorado does not issue a statewide HVAC/mechanical license. Mechanical/HVAC contractors are licensed or registered by local jurisdictions (city/county). Requirements commonly include a qualifying supervisor certificate, ICC-based exams, proof of experience, and insurance—varying by jurisdiction.

Federal refrigerant work still requires EPA Section 608 certification. Always verify project-specific permitting and inspection rules with the local building department where the work occurs.

If you perform mechanical/HVAC work in Colorado, contact the building department in each city or county where you plan to work for license and registration steps. Denver, Clear Creek County, Boulder, Littleton, Larimer County, and Brighton each maintain their own contractor licensing frameworks.

Local Licensing Requirements

Major Cities with Local Requirements:

  • City of Denver: Supervisor certificate, experience verification, ICC exam, insurance, and company officer registration with the Secretary of State. Registration link
  • Clear Creek County: Licenses include Class A (General), Class B (Building), Class C (Residential), Class D (Miscellaneous), and Class M (Mechanical/HVAC). Application, fee, and supervisor experience verification required; state electrical/plumbing licenses recognized. Registration link
  • City of Littleton: Contractor registration with proof of insurance, valid photo ID, and fee. Registration link
  • Larimer County: Licensing requires passing grade, project experience, lawful presence documentation, and fee. Registration link
  • City of Boulder: ICC/ICBO certification or city contractor license, with application and fee. Registration link
  • City of Brighton: Application, fee, and insurance; license types vary by trade. Registration link

Note: Requirements vary by jurisdiction. Always check with your local building department.

📍 Colorado Uses Some Local Licensing

Some contractor licensing in Colorado is handled by individual cities and counties rather than a state board. This means requirements may vary significantly depending on where you plan to work.

What this means for you:

  • Each city or county sets its own contractor licensing requirements
  • Major jurisdictions (e.g., Denver) often require supervisor certificates, ICC exams, and specific insurance
  • Smaller jurisdictions may have simpler registration processes
  • Electrical and plumbing are state-licensed by DORA; general contractor, roofing, mechanical/HVAC, and many specialties are city/county-issued

Finding your requirements: Search for “[Your City/County] contractor license” or visit the local building department’s website.

General Contractor Licenses in Colorado

General contractor licenses are issued locally in Colorado. Below are Denver’s classifications and requirements; other cities and counties may use different class structures, experience thresholds, and exam expectations.

Note: General contractor licensing is city/county-based. Always confirm specifics with the jurisdiction where you intend to work.

Denver Class A General Contractor License (Local Jurisdiction)

Requirements

Experience: 5 years or 10,000 hours of construction experience as a supervisor, documented via project sheets, W-2s, or employer evidence. A supervisor certificate is required.

Exam: Required. Provider: ICC (International Code Council). Exam: National Standard General Building Contractor (A).

These requirements are specific to Denver. Other jurisdictions in Colorado may have different requirements.

Exam Details

Format: Multiple choice, closed book | Questions: 115 | Duration: 5 hours | Passing Score: 70%

Allowed References: IBC 2018; Contractor’s Guide to Business, Law & Project Management (Colorado).

Topics: Building codes; project management; safety; business law.

Retake Policy: Retake after 30 days.

Insurance

General liability minimum: $1,000,000.

Fees

Application: $250 | Examination: $125 | Initial License: $375 | Renewal: $375 | Late Penalty: $100

Renewal

Annual renewal. Continuing education not specified by Denver.

📚 Exam Prep: Prepare with the Colorado Denver General Building Contractor A G11 N Exam Practice Test. PDF materials typically contain 1,500–2,500 questions, detailed answer keys, and reference locators to code sections. Study offline at your pace; unlimited use.

Source: Denver Contractor Licensing

Denver Class B Building Contractor License (Local Jurisdiction)

Requirements

Experience: 4 years (8,000 hours) of construction experience as a supervisor with documented project history and affidavits. Supervisor certificate required.

Exam: Required. Provider: ICC. Exam: National Standard Building Contractor (B).

These requirements are specific to Denver. Other jurisdictions in Colorado may have different requirements.

Exam Details

Format: Multiple choice, closed book | Questions: 90 | Duration: 4 hours | Passing Score: 70%

Allowed References: IBC 2018; Contractor’s Guide to Business, Law & Project Management (Colorado).

Topics: Building code; safety; business law.

Retake Policy: Retake after 30 days.

Insurance

General liability minimum: $1,000,000.

Fees

Application: $200 | Examination: $110 | Initial License: $325 | Renewal: $325 | Late Penalty: $75

Renewal

Annual renewal. Continuing education not specified by Denver.

📚 Exam Prep: Study with the F12 Colorado Pikes Peak Regional Building Contractor B-1 B-2 Limited Commercial Practice Test. PDF study sets typically include 1,500–2,500 questions, answer keys, and reference locators. Offline and reusable without limits.

Source: Denver Contractor Licensing

Denver Class C Residential Contractor License (Local Jurisdiction)

Requirements

Experience: 2 years (4,000 hours) of residential construction experience as a supervisor with project forms, W-2s, and affidavits. Denver supervisor certificate required.

Exam: Required. Provider: ICC. Exam: National Standard Residential Building Contractor (C).

These requirements are specific to Denver. Other jurisdictions in Colorado may have different requirements.

Exam Details

Format: Multiple choice, closed book | Questions: 80 | Duration: 3.5 hours | Passing Score: 70%

Allowed References: IRC 2018; Contractor’s Guide to Business, Law & Project Management (Colorado).

Topics: Residential codes; project management; business law.

Retake Policy: Retake after 30 days.

Insurance

General liability minimum: $1,000,000.

Fees

Application: $160 | Examination: $100 | Initial License: $250 | Renewal: $250 | Late Penalty: $50

Renewal

Annual renewal. Continuing education not specified by Denver.

📚 Exam Prep: Use the Denver Colorado G13 National Standard Residential Building Contractor C Practice Test. PDFs typically include 1,500–2,500 questions with answer keys and reference locators. Study offline; unlimited use.

Source: Denver Contractor Licensing

Local Licensing Requirements

Major Cities with Local Requirements:

  • City of Denver: Supervisor certificate, experience verification, ICC exam, insurance, and company officer registration with the Secretary of State. Registration link
  • Clear Creek County: Class A/B/C/D system governs scope (general to miscellaneous); project experience and supervisor verification required; state electrical/plumbing licenses recognized. Registration link
  • City of Littleton: Registration with proof of insurance, valid photo ID, and fee. Registration link
  • Larimer County: Passing grade, project experience, lawful presence documentation, and fee. Registration link
  • City of Boulder: ICC/ICBO certification or city contractor license required, with application and fee. Registration link
  • City of Brighton: Application, fee, and insurance; license type depends on trade. Registration link

Note: Requirements vary by jurisdiction. Always check with your local building department.

For Denver and other Colorado GC exam prep resources, browse Colorado contractor license practice tests and study material.

Roofing Licenses in Colorado

Roofing contractor licensing is handled at the local level in Colorado. Denver uses a dedicated Class D Roofing (D-R) specialty license with experience, ICC exam, and insurance requirements.

Note: Roofing licenses are issued by cities and counties. Verify requirements with the jurisdiction where you will perform work.

Denver Class D Roofing Contractor License (Local Jurisdiction)

Requirements

Experience: 2+ years of verifiable roofing experience documented with employment affidavits and a supervisor certificate.

Exam: Required. Provider: ICC. Exam: National Standard Roofing Contractor (Denver D-R license).

These requirements are specific to Denver. Other jurisdictions in Colorado may have different requirements.

Exam Details

Format: Multiple choice, closed book | Questions: 60 | Duration: 2 hours | Passing Score: 70%

Allowed References: IBC/IRC 2018; Denver code amendments.

Topics: Roofing systems; safety; Denver codes.

Retake Policy: Retake after 30 days.

Insurance

General liability minimum: $1,000,000.

Fees

Application: $80 | Examination: $75 | Initial License: $150 | Renewal: $150 | Late Penalty: $25

Renewal

Annual renewal. Continuing education not specified.

Source: Denver Contractor Licensing

Local Licensing Requirements

Major Cities with Local Requirements:

  • City of Denver: Supervisor certificate, ICC exam, insurance, experience affidavits, and registration with Secretary of State. Registration link
  • Clear Creek County: Roofing generally falls under Class D (Miscellaneous); submit application, fee, and supervisor verification. Registration link
  • City of Littleton: Roofing contractors register with proof of insurance, photo ID, and application fee. Registration link
  • Larimer County: Contractors must demonstrate experience, pass required exams (as applicable), and provide documentation of lawful presence. Registration link
  • City of Boulder: ICC/ICBO certification or city license accepted with application and fee. Registration link
  • City of Brighton: Application, fee, and insurance required; license types vary by specialty. Registration link

Note: Requirements vary by jurisdiction. Always check with your local building department.

Explore additional roofing and building exam resources: Browse Colorado contractor license practice tests and study material.

Specialty Trade Licenses in Colorado

Specialty trade licensing (e.g., mechanical/HVAC) is typically handled by local jurisdictions. Denver’s Class D Mechanical license is a common example requiring documented experience, an ICC exam, and insurance.

Note: Specialty licensing is city/county-based. Requirements, scopes, and exams vary by jurisdiction.

Denver Class D Mechanical Contractor License (Local Jurisdiction)

Requirements

Experience: 2+ years verifiable experience in HVAC/mechanical. Employment affidavits and a supervisor certificate are required.

Exam: Required. Provider: ICC. Exam: National Standard Mechanical Contractor (Denver D-M license).

These requirements are specific to Denver. Other jurisdictions in Colorado may have different requirements.

Exam Details

Format: Multiple choice, closed book | Questions: 80 | Duration: 2.5 hours | Passing Score: 70%

Allowed References: IMC/IFGC 2018; Denver amendments.

Topics: Mechanical systems; HVAC installation; safety codes.

Retake Policy: Retake after 30 days.

Insurance

General liability minimum: $1,000,000.

Fees

Application: $80 | Examination: $75 | Initial License: $150 | Renewal: $150 | Late Penalty: $25

Renewal

Annual renewal. Continuing education not specified.

Source: Denver Contractor Licensing

Local Licensing Requirements

Major Cities with Local Requirements:

  • City of Denver: Supervisor certificate, ICC exam, insurance, and experience affidavits for specialty categories including mechanical/HVAC. Registration link
  • Clear Creek County: Class M (Mechanical/HVAC) specialty license available; application, fee, and supervisor experience verification required. Registration link
  • City of Littleton: Trades contractors register with proof of insurance, valid photo ID, and application fee. Registration link
  • Larimer County: Specialty contractors must document project experience, meet passing grade requirements, and pay fees. Registration link
  • City of Boulder: ICC/ICBO certification or city specialty license, plus application and fee. Registration link
  • City of Brighton: Specialty contractor licensing requires application, fee, and insurance; scopes vary by trade. Registration link

Note: Requirements vary by jurisdiction. Always check with your local building department.

Need study materials for mechanical, roofing, or GC exams? Browse Colorado contractor license practice tests and study material.

Application Process

  1. Obtain supervisor certificate (if required) with experience documentation and exam
  2. Complete official application with supporting documentation (Secretary of State registration, insurance proof, W-2s/affidavits for experience)
  3. Submit application, pay applicable fees (application/exam/license/insurance)
  4. Background and credential verification by agency
  5. Await application review (typically 10–20 business days)
  6. Receive license (physical or digital certificate)

Timeline: Application review typically takes 2–3 weeks for most local jurisdictions; timelines can be longer if a supervisor certificate is being evaluated or if additional background checks are required.

Reciprocity

Colorado lists reciprocity with: Wyoming, Nebraska, North Dakota, Montana, Utah, Arkansas, New Hampshire.

Requirements: Hold a current, substantially equivalent license in the reciprocal state; submit application and verification of status; meet Colorado experience/work history standards; and pass any Colorado-specific law exam if required.

Limitations: Not all license types are eligible for reciprocity. Separate local city/county registration and insurance are still required for work in those jurisdictions. Always confirm current reciprocity terms with DORA.

Frequently Asked Questions

How long does it take to get a contractor license in Colorado?

Most local jurisdictions review complete applications within 10–20 business days (about 2–3 weeks). If your application requires a supervisor certificate review or additional verification, processing can take longer.

Can I transfer my license from another state to Colorado?

Colorado has reciprocity with Wyoming, Nebraska, North Dakota, Montana, Utah, Arkansas, and New Hampshire for certain license types. You must hold a substantially equivalent active license, submit verification, meet Colorado’s experience standards, and pass any Colorado-specific law exam if required. Local city/county registration is still necessary for where you work.

What happens if I fail the exam?

Retake policies depend on the exam provider and jurisdiction. PSI and ICC exams listed here generally allow retakes after a 30-day waiting period; check your exam bulletin or local licensing office for exact rules.

Do I need insurance?

Yes. Business-level electrical and plumbing contractor registrations require at least $1,000,000 in general liability (and $500,000 property damage). Local GC/roofing/mechanical licenses also set liability minimums (commonly $1,000,000). Always confirm with the issuing jurisdiction.

How do I renew my license?

Most licenses renew annually. Continuing education varies: electricians need 24 hours per 3-year cycle; journeyman and master plumbers need 8 hours per year; apprentices typically have no CE requirement. Local GC/roofing/mechanical licenses may not specify CE but still require timely renewal and current insurance.

What if my city has different requirements than what’s shown here?

Colorado’s GC, roofing, mechanical/HVAC, and many specialties are licensed locally. The Denver examples here illustrate one set of requirements; other cities/counties (e.g., Clear Creek County, Littleton, Larimer County, Boulder, Brighton) may differ. Always verify with your local building department.

Where can I find practice tests for Colorado exams?

We offer comprehensive PDF practice tests for Colorado and city-specific contractor exams. Each set typically includes 1,500–2,500 questions with precise answer keys and reference locators to exact code sections. Study offline at your pace; no time or use limits. Browse Colorado contractor practice tests.

Colorado · Practice tests

Colorado contractor license practice tests

The Colorado practice tests we publish today: comprehensive PDF guides, typically 1,500 to 2,500 questions each, with full answer keys and reference locators to the exact code sections. We add new tests regularly, so if your license isn’t listed here, contact us and we’ll build it.

Browse all Colorado tests →

Official Sources & References

Official Sources:

  1. Colorado Department of Regulatory Agencies – Electrical Board
    https://dpo.colorado.gov/Electrical/Applications
    Official Board Site | Accessed: 2025-11-02
  2. Colorado Department of Regulatory Agencies – Plumbing Board
    https://dpo.colorado.gov/Plumbing
    Official Board Site | Accessed: 2025-11-02
  3. Denver Community Planning and Development – Contractor Licensing
    https://denvergov.org/…/Apply-for-a-Contractor-License
    City Building Department | Accessed: 2025-11-02
  4. Clear Creek County Contractor Licensing
    https://www.clearcreekcounty.us/349/Contractor-Licensing
    County Building Department | Accessed: 2025-11-02
  5. Littleton Colorado Contractor Licensing and Renewal
    https://www.littletonco.gov/…/Contractor-Licensing-Renewal
    City Building Department | Accessed: 2025-11-02
  6. Larimer County Building – Contractor Licensing
    https://www.larimer.gov/building/contractor-licensing
    County Building Department | Accessed: 2025-11-02
  7. Boulder Contractor Licensing
    https://bouldercolorado.gov/services/contractor-licensing
    City Building Department | Accessed: 2025-11-02
  8. Brighton Contractor Licensing
    https://www.brightonco.gov/2951/ContractorLicensing
    City Building Department | Accessed: 2025-11-02

⚠️ Important Disclaimer

Information Currency: This guide reflects licensing information as available in 2025. Licensing requirements are subject to change without notice. Always verify current requirements with official sources.

Official Source: For current information, contact the Colorado Department of Regulatory Agencies (DORA) – Electrical and Plumbing Boards; Local Jurisdictions for General/Specialty:

No Legal Advice: This guide provides general information only. Consult with the licensing board or a qualified professional for guidance specific to your situation.

Local Requirements: General contractor, roofing, mechanical/HVAC, and many specialty licenses are issued by cities/counties in Colorado. Always verify requirements with your local building department.

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