By Kjel Jones, independent Island Park building researcher · licensed Idaho real estate agent, LPT Realty

Published 2026-10-16

Class I or Class II: which permit does your project need?

The one sentence that starts everything

Before any rule about setbacks, snow loads or septic matters, Fremont County’s code asks one sorting question: which permit class is this? The two classes are not sizes of the same thing — they are two different machines. A Class I permit is decided administratively (county staff review it against the code and issue it); a Class II permit goes to the Planning and Zoning Commission at a public hearing your neighbors are notified about and can attend. The opening rule of Chapter 3 is broad enough to catch nearly everything a cabin buyer would ever do:

“A permit shall be required for any division of land; any clearing, grading, construction, or reconstruction; and any change in land use, except as specifically exempted by 3.03 and 3.04.”

— Fremont County Development Code, 2011 Edition (Ordinance 2011-04), section 3.02. Retrieved 16 October 2026

Read the three verbs carefully: division (land), construction (buildings), change in use (what happens on the lot). A plan can touch all three at once — and which class each piece lands in is what the rest of this page sorts out. Before assuming you need anything at all, check the exemption list first: the 200-square-foot shed rule is the one most buyers ask about, and the permit-path overview puts the classes in the order you meet them.

Class I: the administrative track

The list that matters most to a cabin buyer is one line long: “b. Any single family dwelling.” The house itself — the thing this site exists to help you build — is a Class I permit. Here is the full list from section 3.02.010, translated:

The shoreline wrinkle

Work near water is Class I even when it feels big. Section 3.02.020 pulls a specific list of activities into Class I whenever they sit inside the county’s stream and lakeshore corridors or its special flood hazard areas:

“A Class I permit shall be required for any activity, including dredging, filling, clearing, grading, excavation, the construction of retaining walls or other means of shoreline stabilization, and the construction of accessory buildings within stream or lakeshore corridors and special flood hazard areas established by this Ordinance”

— Fremont County Development Code, 2011 Edition (Ordinance 2011-04), section 3.02.020. Retrieved 16 October 2026

So a revetment or a cut of grading near the water can be an administrative permit — but with one important hinge at the end of the section: if the same work is “proposed as part of a subdivision or an application for which a Class II permit is required,” the county may fold it into the Class II review instead. The class follows the project, not the acreage. How close the water itself lets you build is a separate question with its own distances — the shoreline page carries them.

Class II: the hearing track

Everything that changes what the neighbors see, or how many parcels exist, is Class II. The code’s own lead is bare: “A Class II permit shall be required for:” — and then the list:

1. Land divisions — any split, division or portioning that creates parcels with the right to build, plus short plats (small subdivisions), standard subdivisions and re-plats of every size.
2. Conditional and special uses — the uses a zone allows only case-by-case; reading the use lists tells you whether your plan is one.
3. Expanded or major transient rental use — rental intensity above the minor tier; the outgrowing page walks that line.
4. Higher density residential — multi-family dwellings, RV parks, manufactured home parks.
5. Commercial and industrial applications, including major changes of use.
6. Preparatory clearing and grading for any of the above — same trap as Class I: clearing before a subdivision application does not pre-empt the review, it joins it.

What all six have in common is third parties: when your project creates new lots, new intensity, or a use the zone tolerates only conditionally, the county’s answer is a public hearing. That means the full notice battery — mailed notice to owners within 1,000 feet, the newspaper notices, the roadside sign — and a vote by the Planning and Zoning Commission (the county’s hearing board), not a staff stamp. If the problem is not the use but one specific rule, the remedy is different machinery entirely: the variance page covers bending a single rule without changing the class system.

When one project needs both

Splitting a parcel and building on it is two permits — with one merciful rule attached. Section 3.02.040 handles the overlap:

“the Administrator may combine all required permits into one application and in his/her sole discretion only require payment of the fee of the highest cost permit. Multiple Class II permits will be publicly heard by the Commission individually and the Applicant shall be responsible for all public notice expenses of each.”

— Fremont County Development Code, 2011 Edition (Ordinance 2011-04), section 3.02.040. Retrieved 16 October 2026

Two things to take from that. First, the fee mercy: when permits combine, the code lets the county charge only the fee of the highest-cost permit — this page deliberately prints no dollar amounts; ask Planning & Building at (208) 624-4643 for current figures. Second, the hearing mercy does not exist: multiple Class II permits are heard individually, and the applicant pays the notice costs of each — a phased land plan is a series of hearings, not one.

Before you file: the class question in five moves

1. Start from the zone, not the building: identify the zoning district first, because the use lists decide what is conditional before any class is assigned.
2. Name every piece of the plan separately — house, shop, driveway cut, septic area, future split — and put each against the two lists above.
3. Check the exemptions before assuming a permit: 3.03 and 3.04 excuse some divisions and small structures outright.
4. If any piece is Class II, calendar the hearing cycle early — notice periods run weeks, and the build timeline moves around them, not the reverse.
5. Ask the Administrator about combining permits on one application — 3.02.040 gives that discretion, and it can save both paperwork and a fee.

The class system is the county’s triage: it does not decide whether your project is allowed — the zones and use lists do that — it decides who signs, and who gets to argue. A clean Class I project is between you and the code. The moment a plan touches land division, density or conditional uses, it becomes the neighborhood’s business by design, and the file says so.

Common questions

What permit class is a cabin in Fremont County?

Class I. Section 3.02.010 lists 'Any single family dwelling' among the Class I permits, which are reviewed administratively by county staff — no public hearing for the house itself. The accessory buildings that follow it are Class I as well unless exempted.

What is the difference between a Class I and Class II permit?

Process. Class I permits are decided administratively — staff check the application against the code and issue. Class II permits — land divisions, subdivisions, conditional and special uses, expanded transient rental, higher-density and commercial applications — go to the Planning and Zoning Commission at a noticed public hearing.

Does a Class I permit require a public hearing?

No. The hearing, the mailed notices to owners within 1,000 feet, the newspaper publications and the roadside sign are the Class II process. A single family dwelling with no land division or conditional use attached stays on the administrative track.

What class is work near a stream or the lakeshore?

Class I, per section 3.02.020 — dredging, filling, clearing, grading, excavation, retaining walls and shoreline stabilization inside stream or lakeshore corridors and special flood hazard areas. But if the same work is part of a subdivision or another Class II application, it is evaluated within that Class II review instead.

What if my project needs more than one permit?

Section 3.02.040 lets the Administrator combine all required permits into one application and, at their discretion, charge only the fee of the highest-cost permit. Multiple Class II permits, though, are heard by the Commission individually, with the applicant paying each one's public notice expenses.

Can clearing my lot before applying avoid the permit class?

No — both class lists capture preparatory work. Clearing or grading preparatory to the Class I items is itself Class I, and clearing preparatory to land divisions or subdivisions rides with the Class II review. The order of operations does not change the class.