Published
Six lots or fewer: the short plat, the county's administrative path for splitting ground.
The instrument the valley floor actually uses
Not every division of land is a subdivision with a capital S. Most of what happens on farm ground around St. Anthony, Parker and Egin — a piece split off for a family member, a corner sold to a neighbor, a homesite carved from the parent farm — is one or two lots, not a development. Fremont County has a named procedure for exactly that, and it defines itself by two numbers and one office:
“A Short Plat subdivision permits a division of land into six (6) or fewer lots (including the reconfigured original source parcel of land), and is an administratively processed Class II permit.”
— Fremont County Development Code, 2011 Edition (Ordinance 2011-04), section 3.16. Consolidated through Ordinance 2026-03. Retrieved 7 September 2026
Three things are being said at once:
- The ceiling is six lots, counting the leftover parent parcel — split a 40 into five new lots and keep the remainder, and you have used all six.
- It is a Class II permit, the county's significant-impact tier.
- It is administratively processed: the decision is made by the Administrator rather than granted by the Commission after a hearing.
That last difference is most of why people choose this path, and it is worth understanding precisely — administrative does not mean private.
What review actually looks like
The code sets the review of a short plat in three stages, and allows a shortcut:
- Review and decision upon the preliminary short plat.
- Review and decision upon the engineering plans, if the county requires them.
- Review and decision upon the final short plat.
The shortcut is merger: on the applicant's request, the preliminary and final decisions can be merged into one decision, made under the preliminary procedures but with every plan submitted at final-plat detail. Nothing is waived — the applicant simply front-loads the work to compress the calendar. And nothing is final until it is recorded: no administrative approval of a short plat is deemed final until the plat is recorded and proof of recording is back with the Planning and Building Department.
Who gets told, and how
Before the Administrator decides a preliminary short plat, the county runs its notice in four moves:
- Notice by first class mail to all owners of record within 1,000 feet of the site.
- Fourteen (14) days for written comment, counted from that notice.
- The same notice posted on the Planning and Building Department's bulletin board.
- The same notice posted on the county's website.
Any person may participate — the code says so outright — and every participant gains the standing to appeal the decision. So the short plat trades the hearing for a comment window. On the valley floor that is usually the right trade: a one-lot split among farm neighbors rarely needs a public meeting, and a fortnight of mailed notice gives the neighbors who care a genuine channel. It also means the calendar is partly social — an unresolved objection inside that fourteen days does not block the Administrator, but it seeds the appeal that can.
Before dividing: is the ground even a lot?
A rule one chapter earlier decides whether you can skip platting altogether. Section 3.05.010 requires evidence that the property is a “lot” before any Class I or Class II permit is issued — and absent that evidence, a subdivision application is required to create one. Five kinds of ground are exempt from the requirement:
- Parcels with permitted pre-existing dwellings.
- Parcels with non-permitted dwellings constructed prior to June of 1992.
- Parcels containing 160 acres or more.
- Applications for subdivisions.
- Short plat subdivisions — which, in the code's own words, are never permitted on a lot, only a parcel.
That last line is the sleeper. A short plat is the instrument for ground that is a parcel and not yet a lot, which is exactly the position of most inherited and informally-divided farm ground on the valley floor — the situation this site laid out in the checks that come before a builder.
One clean chance, mostly
The entry test is stricter than the lot count suggests:
- Any parcel that has never been subdivided previously may qualify for a short plat.
- A previously subdivided lot must use the standard subdivision procedures — with one narrow exception.
The exception matters enough to quote exactly: where the original short plat contains fewer than six total lots, it may be revised to create additional lots if no more than six total lots are created within the boundary lines of the original short plat. The six-lot ceiling applies to the original boundary forever, not to each application. A revision carries four requirements of its own:
- Every affected ownership interest inside the recorded short plat must be party to the revision application, or give written agreement — including written agreement to accept, transfer or convey any ownership the revision makes necessary.
- Any features of the original short subdivision that later decisions relied on, and that still apply, must be incorporated into the revision.
- The preliminary-approval procedures apply again, and the revision may not adversely affect access, easements or any land use requirement of county law.
- The approval is filed and recorded as a supplemental declaration of short plat subdivision, carrying the adjusted legal description, effective when recorded.
The practical read: a short plat is close to a once-per-parcel instrument. Use it casually on ground that might later need a real division, and you will meet the full subdivision procedure next time.
The clocks, in one place
Section 3.16 runs on four separate time limits, and each one voids something if missed.
| Clock | What the code says |
|---|---|
| The filing clock | A preliminary short plat automatically expires and is void if the final short plat is not filed for approval within one year of the preliminary approval's effective date |
| The first extension | The Administrator may extend a preliminary short plat by up to two years, on a written request filed at least 30 days before the one-year period expires, for unforeseen circumstances the applicant is not responsible for |
| The second extension | No more than two extensions overall; the second runs no more than six months and requires demonstrated reasonable diligence |
| The improvement clock | All required improvements must be completed within one year of final short plat approval, unless work is continuous beyond that point |
Note what the first line does not say. It does not say the approval lapses gradually or can be quietly revived — it says the preliminary short plat is void. A year sounds long until a winter, a lender and a surveyor's queue have each taken their share of it.
What goes in the packet
The county publishes a one-page Subdivision Checklist laid out in three columns — single lot, short plat, subdivision — and it is the cleanest statement of what each path demands. Side by side:
| Single lot | Short plat | Subdivision | |
|---|---|---|---|
| What the path is for | One building site on ground that already evidences a lot | Splitting a parcel into six or fewer lots, counting the reconfigured parent | Any division beyond the short plat's ceiling |
| Sketch plat copies | 1 | 3 | 15 |
The short plat column of the checklist asks for, in its own order:
- A project narrative.
- The signed application and fee.
- Proof of ownership — or the owner's letter authorizing an agent.
- A sketch plat in three copies.
- Agency letters as applicable — the checklist names Eastern Idaho Health District, the Fremont-Madison Irrigation District, the Fire District and the U.S. Fish and Wildlife Service.
- A site context map, the preliminary plat, and engineering plans as needed.
Two of those agency letters deserve a pause. The irrigation district appears because most valley-floor ground sits inside one, and dividing it triggers the water-rights statute — with consequences that follow the lots for decades. The health district appears because every new lot needs an answer on septic before anyone builds. Neither is a formality; both have stopped splits.
The county's own advice sheet says it first
The subdivision application itself opens with a page the county wrote plainly, called “Some things you need to know before applying.” Its irrigation paragraph is the most useful public advice in the packet: the county will ask the Fremont Madison Irrigation District to comment on your application, including its opinion on how well the application satisfies Idaho Code 31-3805 — and, in the county's own capitals, you will save time and avoid problems if you meet with FMID and review your plans BEFORE submitting your application.
The same sheet tells applicants to make three calls before the county ever sees the file:
- Talk to the irrigation district first — the county will ask FMID to comment regardless, so the meeting is cheaper than the surprise.
- Talk to the county first if there is any chance the ground sits in the floodplain, before the application is drawn.
- Talk to the U.S. Army Corps of Engineers first if wetlands are possible, because the Clean Water Act reaches the ground before county review does — and it can affect Eastern Idaho Public Health approval too.
Its tone is unusual for a government form — call us first, talk to the district first, talk to the Corps first — and it is worth taking literally.
On cost, the application prints one county-side figure directly: a county surveyor fee of $200, plus $20 per lot. The application fee itself is set by the county's fee schedule, and your own surveyor's plat charge — the real number in any split — is set by that firm; both belong in the budget before the first drawing.
How a short plat fits the rest of the county's map
A split is usually the second question, not the first. Before it come the routing questions on the county's zoning questionnaire — canals, floodplain, access — and the question of where an address comes from on unaddressed ground, because a recorded short plat is what creates the parcel an address attaches to. On inherited ground specifically, the sequence in the checks that come before a builder still holds; the short plat simply replaces “someday we should divide this” with a recorded instrument. And if what you actually want to adjust is an existing recorded plat rather than divide fresh ground, that is the amendment path, with its own ceiling.
None of this is a reason not to split. It is the reason to do it deliberately: the short plat is forgiving on process and unforgiving on the count.
Common questions
How many lots can a Fremont County short plat create?
Six or fewer, counting the reconfigured original source parcel. Splitting a parcel into five new lots while keeping the remainder uses the entire allowance, because the leftover parent parcel counts as one of the six.
Who decides a short plat application?
The Administrator. A short plat is an administratively processed Class II permit, so the decision is made administratively rather than granted by the Commission after a hearing - though an appeal path exists for anyone who participated.
Do neighbors get notice of a short plat?
Yes. The Administrator mails notice by first class mail to all owners of record within 1,000 feet of the site, provides fourteen days for written comment, and posts the notice on the department's bulletin board and the county's website. Any person may participate.
Can any parcel use the short plat path?
Any parcel that has never been subdivided previously may qualify. A previously subdivided lot must use the standard subdivision procedures, except that a short plat with fewer than six total lots may be revised to add lots up to six within the original boundary lines.
How long does a preliminary short plat last?
It automatically expires and is void if the final short plat is not filed for approval within one year of the preliminary approval's effective date, unless extended. Extensions are possible but bounded: no more than two, the first up to two years, the second no more than six months, each requiring a written request at least 30 days before expiry.
How many copies of the sketch plat does a short plat need?
Three, per the county's subdivision checklist. A single-lot application takes one copy; a standard subdivision takes fifteen. The checklist sits the three paths side by side in columns.
What agencies comment on a short plat?
The county's checklist names agency letters as applicable from Eastern Idaho Health District, the Fremont-Madison Irrigation District, the Fire District and the U.S. Fish and Wildlife Service. The irrigation district's letter follows the water-rights statute that governs dividing irrigated ground.
What does the county charge for a short plat?
The application prints a county surveyor fee of $200 plus $20 per lot; the application fee itself is set by the county's fee schedule. Your own surveyor's charge for the plat is separate and set by that firm.
Should I talk to the irrigation district before applying?
The county's own application sheet says so in capitals: Fremont County will ask the Fremont Madison Irrigation District to comment on the application, and you will save time and avoid problems if you meet with FMID and review your plans before submitting.