Pest Control Permit Requirements in Denver, CO

Complete permit and license guide for starting a pest control in Denver, Denver County, Colorado.

Updated 2026-03-15 6 stops $400–$1,200 est. 6–10 weeks to obtain all licenses and pass required exams
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Not legal advice. Requirements may change — always verify with your local government authority before applying. This guide was compiled from public and official sources (last updated ) and has not yet been independently source-verified — confirm each requirement before acting on it.

Federal — start here

2 stops

  1. EIN (Employer Identification Number)

    Required if you have employees or operate as an LLC or corporation. Free from the IRS.

    Official government source

    FreeImmediate (online application)

  2. EPA Federal Pesticide Requirements

    Federal law (FIFRA) requires all pesticide applicators to use only EPA-registered products and follow label instructions. Commercial applicators must maintain application records for at least 2 years.

    Official government source

    No federal feeOngoing compliance

State of Colorado

2 stops

  1. Colorado — Commercial Pesticide Applicator License

    Colorado requires all commercial pest control applicators to hold a license from the Colorado Department of Agriculture. Pest control businesses must be registered in the state. Technicians must be licensed or working under a licensed applicator.

    Official government source

    $40 exam fee; $100 business registration4–8 weeks

  2. Colorado — Sales Tax / Business Registration

    Colorado imposes state and local sales taxes on some pest control services. Register with CDOR.

    Official government source

    No fee1–2 weeks

City of Denver / Denver County

2 stops

  1. Denver — General Business License

    Denver requires all businesses operating within city limits to obtain a general business license from the city. Pest control companies must renew annually and may be subject to additional zoning review.

    Official government source

    $50–$200/year1–3 weeks

  2. Colorado Department of Agriculture — Commercial Pesticide Applicator License

    Colorado requires all commercial pest control applicators to hold a license from the Colorado Department of Agriculture. Pest control businesses must be registered in the state. Technicians must be licensed or working under a licensed applicator.

    Official government source

    $40 exam fee; $100 business registration4–8 weeks (exam scheduling and processing)

Terminus

Open for business — est. $400–$1,200 · 6–10 weeks to obtain all licenses and pass required exams

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Official Sources

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