Published
The county cannot stop you renting the cabin. Your covenants and your septic still can.
The short answer, and then the expensive part
Yes. Since 2017 Idaho has protected short-term rentals by statute, and the protection is unusually strong — no county or city in Idaho may require a licence, fee, permit, certification or registration to operate one. Fremont County cannot make you apply for anything, and it cannot zone you out of it.
That settles the legal question in one paragraph. It does not settle the build question, which is a different one and comes earlier: a cabin you intend to rent is not the same building as a cabin you intend to use, and the difference is decided before the foundation goes in.
What the statute actually says
“No county or city shall require a license, fee, permit, certification, or registration to operate a short-term rental.”
— Idaho Code § 67-6539(5). Added 2017, ch. 239; amended 2018, ch. 79; amended 2026, ch. 22. Retrieved 1 September 2026
Subsection (1) goes further and bars any ordinance with the express or practical effect of prohibiting short-term rentals. The phrase “practical effect” is doing real work there: it closes the route of technically permitting something while making it impossible.
Subsection (2) then names the specific restrictions a local government may not impose. The list is long and it is worth reading, because several of these appear in older county documents and in a good deal of internet advice:
- Owner occupation requirements — you do not have to live there.
- Professional management mandates.
- Additional insurance requirements beyond what applies generally.
- Usage reporting demands.
- Enhanced fire protection beyond the general standard.
- Additional parking mandates, and requirements to modify the physical structure.
- Inspections, and signage or notice requirements.
- Limits on the number of rental days.
- Neighbour notification, and utility capacity upgrades.
- Conditional use permits in residential zones.
- Proximity restrictions to other short-term rentals, and caps on the total number of them.
What a county may still require — five things, and that is the list
Subsection (3) is exhaustive rather than illustrative. These are the only short-term-rental-specific requirements that survive:
| Permitted requirement | What it means for a build |
|---|---|
| Smoke alarms in sleeping areas | Already required by the adopted residential code. No change. |
| Fire extinguishers and carbon monoxide detectors | Cheap, and worth specifying at rough-in rather than retrofitting. |
| Escape ladders for above-ground windows | A real consideration if the design puts sleeping rooms in a loft, which cabin designs frequently do. |
| Occupancy limits matching the International Building Codes | The one with teeth. It ties how many people may stay to the building itself. |
| An informational handout about exits and emergency contacts | An operating task, not a build task. |
Subsection (6) preserves the ordinances that apply to everybody: noise, parking, nuisance and traffic rules that bind all residential uses still bind a rental. A short-term rental is protected from rules aimed at short-term rentals. It is not protected from rules aimed at everyone.
The three things that can still stop you, and none of them is the county
This is the part the statute does not reach, and it is where the real answer for an Island Park lot usually lives.
- Recorded covenants. A great deal of platted Island Park ground carries CC&Rs, and a private covenant banning or limiting rentals is not a county ordinance — § 67-6539 does not touch it. The covenants are recorded against the lot and they run with the land, so this is a question to answer before you buy, not before you list.
- Septic capacity. A system is sized for the load it will carry, and a cabin rented to a rotating group of guests carries a different load from the same cabin used by one family. That sizing decision is made at design stage and it is expensive to revisit. The rules are set out on the septic side of a short-term rental in Island Park, and they are the single most common reason an owner discovers late that renting is not straightforward.
- Sewer, where it reaches. In the pockets served by the county sewer, the annual charge is banded by use and by square footage, and a rental is not charged as a residence — the Mack's Inn corridor is where that bites.
Take the covenants and the septic together and you have the honest answer: the state has made this easy legally and left it exactly as hard as it ever was physically and contractually.
| Question | Answered by | Settled at |
|---|---|---|
| May the county require a permit? | Idaho Code § 67-6539 | Already answered — no |
| Do the covenants permit renting? | Recorded CC&Rs on the lot | Before you buy the land |
| Can the septic carry the occupancy? | System design and site evaluation | At design, before the foundation |
| How many people may stay? | Adopted International Building Codes | At design, from the plan |
| What is the sewer charged at? | County sewer ordinance bands | Where sewer reaches the lot |
The tax stack, which nobody warns you about
A stay of thirty days or less in Idaho is taxable, and the tax is layered rather than single. The 6 percent state sales tax applies, plus the 2 percent Travel and Convention tax. On top of that sit any applicable auditorium-district and city local-option taxes, which vary by where the property is and are the reason two cabins forty miles apart can carry noticeably different total rates.
Marketplace platforms collect some of these automatically and not others, and which ones depends on the platform and the jurisdiction. Registering with the Idaho State Tax Commission is the owner's job, not the platform's, and it is worth settling before the first booking rather than after the first filing deadline.
Deciding at the right moment
The reason this belongs in a build conversation rather than a letting conversation is sequencing. The legal question can be answered any time; the sizing question cannot. If there is any real chance the cabin will be rented, the decision needs making before the septic design is finalised, which in practice means before the plans are finished.
Answer four questions in this order and the rest follows: do the covenants permit it, can a system be sized for the occupancy you want, what does the code's occupancy limit allow, and is the ground on sewer. Two of those are settled at purchase and two at design. None of them is settled by the county, because the county is not allowed to ask.
If you have not bought the lot yet, the covenants question sits alongside everything else worth checking before an offer — see the permit path and what to establish first.
Common questions
Can you rent out a cabin you build in Island Park, Idaho?
Yes as far as the county is concerned. Idaho Code 67-6539(5) says no county or city may require a licence, fee, permit, certification or registration to operate a short-term rental, and subsection (1) bars any ordinance that has the express or practical effect of prohibiting them.
Does Fremont County require a short-term rental permit?
It cannot. The state statute removes that power from every Idaho county and city. Older county documents and general internet advice sometimes still describe a permit scheme; the statute overrides it.
What can a county still require of a short-term rental in Idaho?
Only five things: smoke alarms in sleeping areas, fire extinguishers and carbon monoxide detectors, escape ladders for above-ground windows, occupancy limits matching the International Building Codes, and an informational handout about exits and emergency contacts.
Can a county limit how many nights a year I rent the cabin?
No. Limits on the number of rental days are specifically named in Idaho Code 67-6539(2) as a restriction a county or city may not impose, alongside owner-occupation requirements, professional management mandates and conditional use permits in residential zones.
Do ordinary noise and parking rules still apply?
Yes. Subsection (6) preserves generally applicable ordinances on noise, parking, nuisance and traffic. A short-term rental is protected from rules aimed at short-term rentals, not from rules that apply to every residential use.
Can the covenants on my lot stop me renting it out?
Yes, and this is the most common obstacle in Island Park. Recorded CC&Rs are private restrictions, not county ordinances, so the state statute does not reach them. They run with the land, which makes this a question to settle before buying the lot.
Does renting change how the septic system has to be sized?
It can, because a system is sized for the load it will carry and a rotating group of guests is a different load from one family. That decision is made at design stage and is expensive to revisit afterwards, which is why it belongs in the build conversation.
What taxes apply to a short-term rental in Idaho?
A stay of thirty days or less carries the 6 percent state sales tax and the 2 percent Travel and Convention tax, plus any applicable auditorium-district and city local-option taxes, which vary by location. Registering with the Idaho State Tax Commission is the owner's responsibility.
Do the booking platforms handle the taxes for me?
Partly. Marketplace platforms collect some of these taxes automatically and not others, depending on the platform and the jurisdiction, so the total is worth confirming rather than assuming. Registration remains the owner's obligation.
When in a build should I decide whether the cabin will be rented?
Before the septic design is finalised, which in practice means before the plans are finished. The legal question can be answered at any point; the sizing question is settled at design and is costly to change later.