HVAC Contractor Permit Requirements in Boise, ID

Complete permit and license guide for starting a hvac contractor in Boise, Ada County, Idaho.

Verified 2026-09-06 6 stops $400–$1,500 est. 4–10 weeks
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Not legal advice. Requirements may change — always verify with your local government authority before applying. Key agencies and fees on this page were re-checked against official government sources on .

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 Idaho

2 stops

  1. Idaho State Tax Commission — Sales Tax Permit

    Required for all businesses selling taxable goods or services in Idaho. Idaho charges a 6% state sales tax. Some cities have local option taxes. Register with the Idaho State Tax Commission online.

    Official government source

    FreeImmediate (online via TAP)

  2. EPA Section 608 Certification (for refrigerants)

    Technicians who purchase, recover, or handle refrigerants must hold EPA Section 608 certification. Required by federal law regardless of state.

    Official government source

    $20–$100 (exam)1–2 days

City of Boise / Ada County

3 stops

  1. Idaho DOPL HVAC Board — HVAC/Mechanical Contractor License

    HVAC contractors in Idaho must hold a Mechanical (HVAC) Contractor License from the Idaho Division of Occupational and Professional Licenses (DOPL) HVAC Board, which absorbed the former Division of Building Safety in 2021. Federal EPA Section 608 certification is separately required for anyone handling refrigerants.

    Official government source

    $260 initial ($35 application fee + $225 license fee, 3-year term); $150 renewal4–8 weeks

  2. City of Boise — No General Business License

    Boise does not require a general/blanket business license. Businesses must instead comply with zoning, required building/health permits, and any applicable activity-specific city license (Animal, Food & Alcohol Beverage, Security Services, Vehicle Licensing). Most professional/personal-service businesses fall under none of these categories and need no city business license — verify your specific business's obligations with the City Clerk's Licensing page.

    Official government source

    N/A — no general business license existsN/A

  3. City of Boise Mechanical Permit (per project)

    A mechanical permit must be pulled from Boise Planning & Development Services for each HVAC installation or major repair, with inspections required on completion. Boise publishes its mechanical and fuel gas fee schedule as a static document on the PDS fees page.

    Official government source

    Set by Boise's published Mechanical/Fuel Gas Code Fee Schedule — commercial permits are a $32 base fee plus a percentage of project value (2.28% under $500,000), and residential furnace/AC work is priced per appliance from $12 with the same $32 base1–5 business days for permit issuance

Terminus

Open for business — est. $400–$1,500 · 4–10 weeks

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