Published
How do I get a subdivision approved in Fremont County, Idaho?
A subdivision is a Class II application — $495.00 under the county's adopted fee schedule — that can be disapproved solely for lacking a master plan of the applicant's entire contiguous holdings. The file runs sketch plan, preliminary plan, final plan; phasing needs an improvement agreement covering completion, repair and one year's maintenance. Lead desk: Planning & Building, (208) 624-7200.
Dividing corridor acreage runs through Fremont County's Class II process — the county's heavier application class, covering land splits and subdivisions, short plats and re-plats, conditional and special uses, higher-density residential applications, and commercial and industrial applications, per section 3.02.030. The pages below cover the pieces; this page puts them in filing order.
Step 1 — Draw the master plan first: every acre you hold, treated as one
The lens that sits above everything else, from Development Code section 5.56: "Any application for a Class II permit may be disapproved solely on the basis that it fails to show an overall master plan for the application of the entire contiguous holdings of the Applicant and/or owner."
And the sentence that quietly widens it: "Multiple contiguous parcels held by a single owner are considered a single parcel for the purposes of Master Planning." The county is not judging the twenty acres being platted — it is judging every touching acre the owner holds, as a single canvas. The phase-one plat is an excerpt of a bigger file. (Development Code, 2011 Edition, consolidated through Ordinance 2026-03; retrieved 7 September 2026.)
Step 2 — Sketch plan: context and resources
The master plan's first stage (5.56.010) is deliberately light: a site context map, and an existing resources and site analysis plan. It exists to start the conversation with the county about what the land holds before anything is drawn over it.
Step 3 — Preliminary plan: the file that carries everything
The preliminary stage (5.56.020) is where the application earns its Class II weight. The code's own list of minimally required components:
- The preliminary plat
- A runoff and erosion control plan
- An improvement plan and agreement
- An open space ownership and management plan
- A wildlife plan
- A master landscape plan
- A wildfire sensitive area plan, if applicable
- The applicant's covenants, conditions, and restrictions
The utility side joins here too, from the same code's public-facilities standards: written statements of compliance from each utility, written certification from all proposed public utilities that capacity to serve is available, underground power, and — at the final-plat stage — "All utility easements, public and private, shall be clearly indicated on the final plat document." Utilities must be installed to each lot before road surfaces are constructed.
Step 4 — Covenants: where the county writes itself in
Your CC&Rs are a required component of the preliminary plan, and the county may require two sentences inside them. For plat approval covenants: "These covenant(s) may not be repealed or amended without prior written consent of the Fremont County Board of Commissioners." For county-required covenants: "The Fremont County Board of Commissioners is a party to this restrictive covenant and may enforce its terms."
If common property goes to a property owners' association, the covenants must provide for nine county minimums, lettered (a) through (i) — among them mandatory membership, liens against lots delinquent on association fees, and transition of control from the Declarant to the homeowners. Not every subdivision carries the county's sentences, and you cannot assume either way; the recorded covenants answer it.
Step 5 — Final plan: the version that records
The final stage (5.56.030) is the final revised versions of all previously required plan components. Where there is an association, it forms concurrently with the filing of the final plat, with Articles of Incorporation filed with the Secretary of State's office. The recorded plat that comes out the far end is the map of the easements, and the instrument the buyers inherit.
Step 6 — Phasing: selling before the improvements exist
The code's permission: "Applicants may elect to record final plats of the Application project in phases and/or offer phases of the application for lease, sale, or occupancy before all required improvements are installed. Phasing shall be permitted pursuant to an improvement agreement..." (§8.07.020, retrieved 1 September 2026.)
The agreement must do eight things, and the fourth changes budgets: it must guarantee completion, repair, and one year's maintenance of all required improvements in the initial phases — a guarantee sized only to finish the work is undersized. Required improvements include plantings and street signs, not just roads and utilities.
Then the clause to read twice: the agreement and any vested rights it confers are void if the county has to call the guarantee or the anticipated schedule is not met or re-negotiated. The cure runs one way — the applicant must initiate re-negotiation within 90 days after a missed phase. An initial phase is any phase anticipated to begin within 18 months; later phases may be expressed as ranges of no more than 12 months.
What it costs, and what is not published
| Item | Amount | Source |
|---|---|---|
| General Class II Permit | $495.00 | Planning and Building Fee Schedule, Resolution 2011-16 Exhibit A, effective 1 July 2011 (retrieved 19 August 2026) |
| County surveyor review, per final phase | $195.00 | Same schedule |
Honest caveat: the schedule is 2011-vintage. The county's April 2026 checklist corroborates it only on the $50.00 site-plan line, so confirm current amounts at the desk before budgeting. Subdivision review timeline: not published in anything banked — the four-to-six-week figure on this site's building pages is the building-permit clock, not this one. Ask Planning & Building, at the courthouse, 151 West 1st North, St. Anthony, (208) 624-7200.
Where this goes wrong
- The holding is drawn too small. Contiguous parcels count as one for master planning; the field behind phase one was inside the review whether or not it was inside the plat.
- Covenants get treated as neighborhood preferences. Where the county's sentences appear, only the Board's prior written consent changes them — a unanimous owner vote does not.
- The phasing schedule slips silently. Missing it voids the agreement and its vested rights unless the applicant opens re-negotiation within 90 days; waiting for the county to raise it consumes the window.
- Firefighting water is forgotten. Where public water is not available, the code requires a dry hydrant at a satisfactory water source within three miles of the proposed subdivision, if one is not already available — a real line item on remote ground.
The close: what the applicant files, and what a buyer asks
The applicant (owner or developer) assembles the master plan and its components, negotiates the covenants, and signs the improvement agreement; the county reviews, hears, and records. A buyer's version of the same file is shorter: ask Planning what the master plan for the entire contiguous holding showed, and read the recorded covenants before the brochure. Questions on a corridor parcel: (208) 656-1516.
Where to read next: the master plan rule · what a phased subdivision guarantees · what the plat says about utilities · the wildfire requirement · well and septic before you build
Common questions
What is a Class II permit?
The county's heavier application class, covering any land split or subdivision creating buildable lots, short plats up to six lots, standard subdivisions and re-plats, conditional and special uses, higher-density residential applications including multi-family, RV and manufactured home parks, and commercial and industrial applications.
Can the county deny the application just for lacking a master plan?
Yes — the code's word is "solely." An application may be disapproved solely because it fails to show an overall master plan for the entire contiguous holdings, with contiguous parcels under one owner treated as a single parcel.
What are plat approval covenants?
Restrictive covenants, set apart under their own heading, that the county required or approved as part of plat approval. Where they appear, they may state that they cannot be repealed or amended without prior written consent of the Board of County Commissioners.
Can the property owners' association put a lien on a lot?
Where common property is deeded to an association, the covenants must provide for liens against lots delinquent on fees and assessments — a county-required minimum. Assume the power exists and read the assessment schedule before buying.
What happens if the phasing schedule slips?
The agreement and any vested rights it confers are void if the schedule is not met or re-negotiated — unless the applicant initiates re-negotiation within 90 days after the missed phase. The obligation to open that conversation sits with the applicant, not the county.
Does the whole thing have to be built before any lots sell?
No — that is what the improvement agreement is for. Phases may be recorded and offered before all improvements are installed, under an agreement that guarantees completion, repair and one year's maintenance and provides the county a process to finish the work using the guarantee.
--- Sources: Fremont County Development Code, 2011 Edition (Ordinance 2011-04), consolidated through Ordinance 2026-03 — sections 5.56.010/.020/.030, 5.56.020(3), 8.07.020, 5.36.010/.020, Appendix S (retrieved 7 September 2026 and 1 September 2026 as banked) · Fremont County Planning and Building Department Fee Schedule, Resolution 2011-16 Exhibit A, effective 1 July 2011 (retrieved 19 August 2026) · section 3.02.030 Class II list as banked. Figures verified against the site's banked, dated extracts.