Does Idaho license general contractors?

No state builder's license exists for them — the state registers contractors instead. What registration is and how to verify a number are on this site's registration pages.

Which trades does Idaho license?

Electrical and plumbing are licensed trades with state permits through the Division of Occupational and Professional Licenses; the county's own forms add an Idaho-licensed manufactured-dwelling installer and Idaho-licensed engineers and architects. The complete state list is not banked here — check with the Division, (208) 334-3233.

What is the RCE number on my builder's paperwork?

A state registration number — this site's builder table lists corridor firms by numbers such as RCE-64179, RCE-1785 and RCE-8714. Treat it as a registration to verify, not a license.

Can a licensed plumber start before the permit arrives?

Only at small scale: under §54-2620(3), an improvement or alteration up to $500 in cost, with the official inspection to follow within sixty days.

Can I do my own electrical or plumbing work?

The homeowner exemption "changes who may do the work, never whether the work is permitted and inspected" — on your own single-family or duplex dwelling, the permit and the inspections still happen, in your name.

How long do the state trade permits last?

365 days from the purchase date (plumbing: or from the last inspection), renewable for an additional year with Division approval and a $65 renewal fee.

Does a handyman need permits for plumbing work?

If the work is the kind that is permitted, who performs it does not change that — the exemption logic applies to handymen and owners alike. The registration threshold itself is not banked here.

By Kjel Jones — independent custom-home researcher for Ashton and the Henry’s Fork corridor. Not a builder and not a general contractor. Licensed Idaho real estate agent, LPT Realty.

Published 2026-11-10

Idaho contractor licensing

Quick answer: Idaho does not issue a builder's license for general contractors — the state registers them instead, and licenses the trades. Electrical and plumbing work runs through state permits from the Division of Occupational and Professional Licenses. On your paperwork, your builder's RCE number is a registration to verify; the trades' permits are state files.

Do contractors need a license in Idaho — or only a registration?

Two different systems, and a Fremont County build touches both. The trades are licensed and state-permitted. As this site's state plumbing permit page puts it: "The default everywhere in Idaho is the state permit from the Division of Occupational and Professional Licenses, (208) 334-3233." The electrical side runs the same way — "All electrical permits shall be purchased before work is commenced" — and the plumbing fee schedule is board rule, IDAPA 24.39.20 (rule text dated 3-28-23), "the same ladder the electrical board uses." Where a license exists, a board and a permit ride with it.

General contractors are the other track: no state builder's license — a registration. What registration is, what it asks, and how to check a number are covered on this site's contractor registration rule page; this page adds what the two tracks mean side by side.

Who touches your build	What Idaho does	Where it shows up
Electrician	Licensed trade; state permit through the Division	Permit on file before work begins
Plumber	Licensed trade; state permit; IDAPA 24.39.20 fee schedule	Permit plus ground-work, rough-in and final inspections
Manufactured-dwelling installer	Idaho-licensed	Signature line on the placement permit
Engineer or architect	Must be licensed in Idaho	Stamped plans where the county requires engineered design
General contractor (your builder)	Registered, not licensed	The RCE number on the paperwork

The installer row is the county form's own wording: "Placement permit to be obtained only by homeowner, or Idaho-licensed manufactured dwelling installer." The design row is the county's checklist: structures in the higher snow-load band "are required to be designed by a structural engineer or an architect that is licensed in the state of Idaho."

Not banked here, said plainly: the full list of trades Idaho licenses beyond electrical and plumbing, and the state's current charge to register a contractor. Those live with the Division, (208) 334-3233, and on the registration rule page.

How easy is it to get a contractor license in Idaho — and what it means on your builder's paperwork?

If you are a homeowner reading a permit file, "how easy" is the wrong first question — ask what each number on the paper is. Your builder's number is a registration, and registrations are checkable. This site's own builder table lists corridor firms by registration numbers — RCE-64179, RCE-1785 and RCE-8714 are examples from it — and the check your builder's registration page walks the verification.

The trades' side of the same file is permits, and permits have clocks. "Every permit expires and becomes null and void after 365 days from the purchase date or last inspection, and can be renewed for an additional year with Division approval and a $65 renewal fee." A build that stalls for a season can outlive its trade permits — one reason permits land close to the work, not close to contract signing. The state plumbing permit and state electrical permit pages carry the two fee schedules.

A licensed plumber's paperwork carries one small-repair convenience: "Under §54-2620(3), a licensed plumber may start an improvement or alteration before the permit arrives, up to $500 in cost, with the official inspection to follow within sixty days." The page that quotes it adds the limit plainly: "That is a convenience for small repair jobs — not a way around the permit for a house."

For someone actually seeking the credential, the honest answer is that this site has not banked the current registration charge or its processing time — the registration rule page and the Division hold those numbers.

What's the difference between a contractor and a handyman in Idaho?

The registration statute draws its line by scale of work — who must register — and the exact threshold, a dollar figure with its statute number, is not banked on this site. What is banked is the principle the state's own permit rules print, and it settles most handyman questions a homeowner actually has:

"So the homeowner exemption changes who may do the work, never whether the work is permitted and inspected. If you self-perform plumbing on your own single-family or duplex dwelling, the permit and the inspections still happen
— in your name."

That logic runs the same for a handyman as for an owner: an exemption changes who may do the work, never whether the work is permitted and inspected. And once work is permitted, the inspection clock is statute: "Idaho Code § 39-4118, added by the 2025 legislature (ch. 221), sets a 48-business-hour clock on requested inspections."

Scale shows in the licensed-trade rules above, too — the §54-2620(3) start-first window is capped at $500 and sixty days, small-repair scale rather than house scale.

Frequently asked questions

Does Idaho license general contractors? No state builder's license exists for them — the state registers contractors instead. What registration is and how to verify a number are on this site's registration pages.
Which trades does Idaho license? Electrical and plumbing are licensed trades with state permits through the Division of Occupational and Professional Licenses; the county's own forms add an Idaho-licensed manufactured-dwelling installer and Idaho-licensed engineers and architects. The complete state list is not banked here — check with the Division, (208) 334-3233.
Where do electrical and plumbing permits come from? "The default everywhere in Idaho is the state permit from the Division of Occupational and Professional Licenses, (208) 334-3233."
What is the RCE number on my builder's paperwork? A state registration number — this site's builder table lists corridor firms by numbers such as RCE-64179, RCE-1785 and RCE-8714. Treat it as a registration to verify, not a license.
Can a licensed plumber start before the permit arrives? Only at small scale: under §54-2620(3), an improvement or alteration up to $500 in cost, with the official inspection to follow within sixty days.
Can I do my own electrical or plumbing work? The homeowner exemption "changes who may do the work, never whether the work is permitted and inspected" — on your own single-family or duplex dwelling, the permit and the inspections still happen, in your name.
How long do the state trade permits last? 365 days from the purchase date (plumbing: or from the last inspection), renewable for an additional year with Division approval and a $65 renewal fee.
Does a handyman need permits for plumbing work? If the work is the kind that is permitted, who performs it does not change that — the exemption logic applies to handymen and owners alike. The registration threshold itself is not banked here.

Sort it before you sign

Licensing, registration, county permits, trade permits — which applies to which piece of a Fremont County build is a free question to put to this site: call or text (208) 656-1516, or describe your build on the homepage form.

Ashton Home Builders is an independent custom-home research site for Ashton and the Henry's Fork corridor (Kjelco LLC) — not a builder and not a general contractor. Research and real estate licensing: Kjel Jones, licensed Idaho real estate agent, LPT Realty, license SP49090. Equal Housing Opportunity.