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Idaho: under $2,000 a job without a contractor registration (minor work only)
In Idaho a job under $2,000 needs no state contractor registration (casual or minor work only). Plumbing, electrical and HVAC: state license. Read from Idaho's own pages, checked November 6, 2026.
The limit in Idaho
The limit: Under $2,000 per job; casual or minor work only. In short: under $2,000 per project, labor + materials + everything else, counted across all contracts for that project.
What counts: "one (1) undertaking or project considered casual, minor, or inconsequential, whether by one (1) or more contracts, the aggregate contract price of which, for labor and materials and all other items, is less than two thousand dollars ($2,000)" Materials count toward the limit, not just your labor.
Conditions: work must be casual, minor or inconsequential; not part of a larger construction project (by the same or a different contractor); contracts may not be split into amounts under $2,000 to evade the law; a permit can still be issued to an exempt person but is stamped 'no contractor registration provided'.
Idaho has contractor REGISTRATION (not a license exam) for general construction; the $2,000 rule is an exemption from registration.
Licenses in Idaho
General contractors: State registration. Every contractor must register with the Idaho Contractors Board unless exempt; projects whose aggregate price (labor, materials, all items) is $2,000 or more need registration. No exam-based general contractor license for private residential/commercial work was found in this chapter.
Plumbing: State license. State certificate of competency required to engage in plumbing (DOPL Plumbing). Idaho Code § 54-2610.
Electrical: State license. State license required to act as an electrical contractor or limited electrical contractor. Idaho Code § 54-1002.
HVAC: State license. State certificate of competency required for heating, ventilation and air conditioning work. Idaho Code § 54-5008.
Your license number in Idaho
Your license number: Registered contractors must show the number on place of business, advertising, contracts, permits, letterheads, purchase orders and subcontracts. None of these rules names invoices.
In the rule's words: “A contractor registered pursuant to this chapter shall prominently display his contractor registration number for public view in his place of business, on advertising, contracts, permits, company or business letterheads, and purchase orders and subcontracts within sixty (60) days of issue of registration.” (Idaho Code § 54-5214(2))
Idaho's board, and when this was checked
The board: Idaho Contractors Board (Division of Occupational and Professional Licenses). As of November 6, 2026. Dates on the state's pages: dopl.idaho.gov/con/ last updated July 22, 2026 and dopl.idaho.gov/hvac/ last updated November 5, 2026.
This is a summary of each state's own pages as of November 6, 2026, not legal advice. Rules change, and cities and counties add licenses of their own. Check with your state's board, linked on this page, before you rely on it.
Compare Idaho with every state's limit.
Official sources for Idaho
9 of Idaho's own pages, each quoted with its link:
- Idaho Code 54-5205 Exemptions from registration (Idaho Code § 54-5205): “A person performing work on one (1) undertaking or project considered casual, minor, or inconsequential, whether by one (1) or more contracts, the aggregate contract price of which, for labor and materials and all other items, is less than two thousand dollars ($2,000).”
- Idaho Code 54-5205 Exemptions from registration (anti-splitting) (Idaho Code § 54-5205): “The exemptions prescribed in this paragraph (f) shall not apply when the work or construction is part of a larger construction project, whether undertaken by the same or a different construction contractor, or in which a division of the operation is made into contracts of amounts of less than two thousand dollars ($2,000) for the purpose of evasion of this chapter or otherwise”
- Idaho Code 54-5204 Registration required (Idaho Code § 54-5204): “On and after January 1, 2006, it shall be unlawful for any person to engage in the business of, or hold himself out as, a contractor within this state without being registered as required in this chapter.”
- Idaho Code 54-5209 Building permits and contractor registration number (Idaho Code § 54-5209): “a permit may be issued to a person otherwise exempt from the provisions of this chapter provided such permit shall conspicuously contain the phrase 'no contractor registration provided' on the face of such permit.”
- Idaho Code 54-5214 Registration certificate — Display (Idaho Code § 54-5214(2)): “shall prominently display his contractor registration number for public view in his place of business, on advertising, contracts, permits, company or business letterheads, and purchase orders and subcontracts”
- Idaho Code 54-2610 (plumbing certificate of competency) (Idaho Code § 54-2610): “It shall be unlawful for any person or firm, copartnership, association or corporation, to engage in the business, trade, practice or work of plumbing in this state after the adoption of this chapter, unless such person ... has issued to him a state certificate of competency”
- Idaho Code 54-1002 (electrical license required) (Idaho Code § 54-1002): “It shall be unlawful for any person, partnership, company, firm, association or corporation to act, or attempt to act, as an electrical contractor or limited electrical contractor in this state until such person ... shall have received a license”
- Idaho Code 54-5008 (HVAC certificate of competency) (Idaho Code § 54-5008): “it shall be unlawful for any person or firm, copartnership, association or corporation to engage in the business, trade, practice or work of heating, ventilation and air conditioning in this state unless such person ... has been issued a state certificate of competency”
- Idaho DOPL — Contractors Board: “Apply for or Renew a Registration”
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