Colorado Contractor Licensing

Trade-by-trade licensing requirements for Colorado, sourced directly from the state regulatory board and maintained by Gabriel Giner, editor. We currently publish 18 published trade guides, with direct links to each underlying board, statute, or exam-provider resource.

Choose your trade

General Contractor
Colorado General Contractor Requirements — Local Jurisdictions
Verified 2026-09-04
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Electrician
Colorado Electrician Licenses and Electrical Contractor Registration
Verified 2026-09-04
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Plumber
Colorado Master, Journeyworker, Residential, and Apprentice Plumber — State Plumbing Board
Verified 2026-09-04
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HVAC Technician
Colorado HVAC — local mechanical contractor licensing; EPA Section 608 where applicable
Verified 2026-09-04
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Roofing Contractor
Colorado Roofing — Local Contractor Licensing and State Consumer Rules
Verified 2026-09-04
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Painting Contractor
Colorado Painting Contractor Requirements — Local Rules + EPA RRP
Verified 2026-09-04
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Landscaping Contractor
Colorado Landscaping — Local Requirements; CDA Licensing for Pesticide Application
Verified 2026-09-04
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Masonry Contractor
Colorado Masonry Contractor Requirements — Local Rules
Verified 2026-09-04
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Concrete Contractor
Colorado Concrete Contractor — No Standalone State Concrete License
Verified 2026-09-08
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Carpentry Contractor
Colorado Carpentry Requirements — Local Building-Contractor Credentials
Verified 2026-09-04
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Solar Installer
Colorado Solar PV — Electrical Contractor or Photovoltaic Installer Framework
Verified 2026-09-04
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Low-Voltage Technician
Colorado Low-Voltage Work — State Electrical and Local Permit Rules
Verified 2026-09-04
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Fire Sprinkler Contractor
Colorado Fire Suppression System Contractor Registration
Verified 2026-09-04
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Home Inspector
No statewide home inspector license or registration
Verified 2026-09-04
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Pool Contractor
No Colorado state license for swimming pool & spa construction (contractor licensing is handled by local city/county building departments)
Verified 2026-07-10
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Handyman
No State License — Local Municipal/County Contractor Licensing Controls (Electrical & Plumbing Licensed by the State)
Verified 2026-07-17
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Pest Control
Commercial Pesticide Applicator Business License
Verified 2026-09-04
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Septic Contractor
Local OWTS systems-contractor authorization
Verified 2026-09-30
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Published guides: 18
Exam-backed: 5
Bond-backed: 0
Local / municipal: 15
Avg initial fee: $225

Local requirements and practical guides

Denver Contractor Licensing: Supervisor Certificates, Applications, and Fees
Choose a Denver construction class, document supervisor experience, apply for the business license, and distinguish certificate fees from license renewal.

How licensing works in Colorado

Colorado is not a one-size-fits-all licensing market. Across the 18 guides currently live on this state hub, 5 require a formal trade examination and 0 require a surety bond before the credential can issue. 15 of the published entries rely on city, county, or municipal registration rather than a single statewide credential, so contractors need to confirm the local building department or business-license office before bidding work.

The point of this state page is to give you a fast read on the regulatory model before you dive into a specific trade. Start with the trades grid below if you already know your specialty. If you are comparing jurisdictions, use the cost calculator for first-year cost and the reciprocity matrix for license portability.

Main boards and agencies

Local building departments and permitting authorities
The city, county, or other authority having jurisdiction determines whether a carpentry contractor needs a local credential and what is required to obtain a project permit. Denver is one municipal example, not a statewide regulator.
Open agency site
Colorado Department of Regulatory Agencies — State Electrical Board
Licenses electricians and electrical contractors and administers the statewide electrical permit and inspection framework where a qualifying local authority does not perform that function.
Open agency site
Colorado State Plumbing Board
The State Plumbing Board licenses plumbers and registers plumbing contractors statewide.
Open agency site
Local building departments; City and County of Denver example
Colorado HVAC licensing is local. The authority having jurisdiction sets contractor licensing and permit rules; EPA separately administers federal Section 608 certification.
Open agency site
Colorado local building authorities and the U.S. Environmental Protection Agency
Colorado law authorizes counties that adopt building codes to establish building-contractor licensing programs. EPA administers the federal RRP program in Colorado for covered renovation, repair, and painting work.
Open agency site
Colorado Attorney General / local building authorities
The Attorney General enforces Colorado consumer-protection law; cities and counties administer contractor licensing, building permits, and inspections where adopted.
Open agency site
Colorado Department of Agriculture — Pesticides Program
CDA licenses and regulates pesticide applicators and commercial pesticide-applicator businesses statewide; local governments administer local business and construction requirements.
Open agency site
Colorado local building authorities
Colorado law authorizes counties that adopt building codes to create contractor licensing programs for work requiring county permits. Cities and counties administer their own building, business, permit, and inspection processes where applicable.
Open agency site
Colorado Department of Public Safety — Division of Fire Prevention and Control
Registers fire suppression system contractors and sprinkler fitters, administers the state fire-suppression registration program, and adopts program rules.
Open agency site
Colorado Department of Agriculture, Division of Plant Industry — Pesticide Program
State agency that licenses commercial pesticide applicator businesses and certifies individual Qualified Supervisors and Certified Operators — including all structural pest control categories — under the Pesticide Applicators' Act.
Open agency site
Colorado Department of Regulatory Agencies, Division of Professions and Occupations
Colorado has no statewide general contractor or handyman license. DORA/DPO licenses only specific trades statewide — electricians under CRS Title 12, Article 115, and plumbers under CRS Title 12, Article 155. General contracting and handyman/home-repair work are regulated exclusively by municipalities and counties, not by the state, so the controlling authority for a given handyman job is the local building department where the work is performed.
Open agency site
No state pool-contractor licensing agency; contractors are licensed by local city/county building departments. Colorado Department of Public Health & Environment (CDPHE), Division of Environmental Health & Sustainability, reviews public-pool construction plans.
Colorado issues NO state-level license for swimming pool and spa construction. Pool-builder licensing or registration is handled by local jurisdictions: Denver lists 'swimming pools' as a specialty contractor license (Specialty Class D) requiring a city-issued supervisor certificate, and Larimer County licenses pool work under its Specialized Trade Contractor class. At the state level, CDPHE administers 5 CCR 1003-5: plans and specifications for constructing, remodeling, or modifying a PUBLIC pool or mineral bath must be submitted to CDPHE for review and approval at least 30 days before construction. This is design plan review, not a contractor license, and it does not apply to private residential pools. Electrical and plumbing sub-trades are licensed statewide by DORA (Colorado Electrical Board / Plumbing Board).
Open agency site
Colorado Department of Regulatory Agencies (no home inspector program)
Colorado does not maintain a state home-inspector licensure or registration program. The Department of Regulatory Agencies (DORA), Division of Professions and Occupations (DPO), regulates listed occupations, but does not list home inspection as a DPO program. SB17-038 (2017), which proposed home-inspector registration, was postponed indefinitely and did not become law.
Open agency site
Jefferson County Public Health / local OWTS authorities
Use the cited agency guidance for the named installer pathway and the authority responsible for each project.
Open agency site

Compare Colorado against other states

Every trade above also has a national comparison hub showing how Colorado's exam, bond, fee, and experience requirements stack up against the other 50 jurisdictions.

States bordering Colorado

Licensing rules change at the state line. Contractors bidding work across the border should review the neighboring hub before assuming Colorado's requirements carry over.

Best starting points in Colorado

Budget

Estimate first-year cost

Compare filing fees, bond premiums, insurance assumptions, and renewal cost before you apply.

Mobility

Check reciprocity pathways

See whether this state accepts NASCLA or uses bilateral reciprocity for the trade you hold now.

Research

Search related guides

Jump directly to linked state and trade pages if you are comparing multiple jurisdictions side by side.