Pest Control Business Permit Requirements in New Haven, CT

Complete permit and license guide for starting a pest control business in New Haven, New Haven County, Connecticut.

Updated 2026-03-15 6 stops $300–$1,000 est. 3–8 weeks to obtain all licenses
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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

1 stop

  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)

State of Connecticut

3 stops

  1. Connecticut Department of Revenue Services — Sales Tax Permit

    Required for all businesses selling tangible personal property or taxable services in Connecticut. Connecticut charges a 6.35% state sales tax. Certain services are also taxable in Connecticut, which has a broader sales tax base than many states. Register with the Connecticut Department of Revenue Services.

    Official government source

    FreeImmediate (online via myconneCT)

  2. Connecticut Department of Energy and Environmental Protection — Pesticide Applicator License

    Commercial pesticide applicators in Connecticut must be licensed by CT DEEP Pesticide Management. Requires passing an exam in the relevant category (e.g., general pest control).

    Official government source

    $80–$130 (exam and license)2–4 weeks

  3. Connecticut Pest Control Business License

    In addition to the individual pesticide applicator license, Connecticut requires pest control businesses to obtain a commercial pest control business license or firm registration through the state pesticide regulatory authority.

    Official government source

    $100–$300 (business license)2–4 weeks

City of New Haven / New Haven County

2 stops

  1. City of New Haven Department of Licenses and Inspections — Business License

    New Haven requires a Certificate of Zoning Compliance and business-specific licenses for regulated industries. The Department of Licenses and Inspections issues permits for businesses operating within city limits. This license must be renewed annually and displayed at your place of business.

    Official government source

    $50–$500/year depending on business type and gross revenues1–3 weeks

  2. New Haven County / New Haven Home-Based or Commercial Business Registration

    If operating a pest control business from a commercial office or vehicle depot in New Haven, obtain a Certificate of Occupancy or commercial use approval from the local building department.

    Official government source

    $50–$3001–3 weeks

Terminus

Open for business — est. $300–$1,000 · 3–8 weeks to obtain all licenses

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Official Sources

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