Published
Does the city have its own code?
Two codes, one valley
Most of the land this site covers answers to Fremont County’s code — but a strip of it answers to the City of Island Park’s own development code, adopted effective December 19, 2025. If your lot sits inside the city limits, the zoning rules that govern what you can build, how big, and how far back come from the city’s book, not the county’s. The code draws its own line in its applicability section:
“The regulations in this Code shall apply and govern development and the use of all properties within the corporate limits of the City, in areas outside of City limits for which annexation has been requested; or as otherwise permitted through written agreement(s) with Fremont County, or by Idaho Code.”
— City of Island Park Development Code, effective 12-19-2025, section 1-4. Retrieved 17 October 2026
The city itself is the narrow community along the highway corridor — the Main Street page tells its story — while the caldera, the reservoir arms, and the Henry’s Lake country around it stay unincorporated county land. Practically, before anything else, establish whose land you are standing on:
- The parcel — the county parcel map settles which parcel you hold;
- The zone — the city’s zoning map (more on where it lives below) settles the zone, if the land is city land;
- The rulebook — if the answer is “county,” this page is not your rulebook; the county permit path is.
The working numbers
The city code’s dimensional table is compact and worth reading whole, because it is the first place a city-limits lot differs from the county land around it. These are the code’s own development standards for the two residential zones and the commercial zone:
| Development standard (Table 3-1) | R1 Zone | R2 Zone | Commercial |
|---|---|---|---|
| Minimum lot size | 0.5 acres | 0.5 acres | N/A |
| Maximum density | 2 units/acre | 8 units/acre | — |
| Front setback, adjacent to arterial streets | 50 ft | 50 ft | 30 ft |
| Front setback, adjacent to local streets | 30 ft | 30 ft | 30 ft |
| Side setback | 20 ft | 20 ft | 0/30 ft* |
| Rear setback | 30 ft | 30 ft | 0/30 ft* |
| Maximum lot coverage | 50% | 80% | 80% |
| Maximum building height | 35 ft | 35 ft | 35 ft |
*The commercial zone’s side and rear setbacks are context-dependent — the table sends the reader to the Commercial Architectural Design Standards for the cases — so treat 0/30 as a range to confirm, not a number to build to. All setbacks in the city are measured from the property line. One more line from the same table’s fine print deserves carrying forward: minimum site width is measured at the setback line, a detail that has caught more than one awkward-shaped lot.
Three zones, and what a cabin is in them
The city code establishes two residential zones and one commercial zone, plus two overlays. The zone a cabin buyer cares about is R1, and the code is unusually plain about its purpose: “This zone is intended to provide separate and distinct single-family residential uses.” R2 exists for higher-density development, and the commercial zone for business uses along the corridor. The use table at the center of Chapter 2 works with a three-symbol key:
“P = permitted use. C = conditional use. Blank indicates it’s not allowed.”
— City of Island Park Development Code, effective 12-19-2025, Table 2.1 legend. Retrieved 17 October 2026
For the row that matters most here: “Dwelling, Single Family Attached or Detached” is P — permitted — in both R1 and R2. A detached single-family cabin is a by-right use in the city’s residential zones; no hearing is needed to ask whether the use itself is allowed. Duplexes and secondary dwellings are also P in both residential zones. (The code’s use table is long, and a few of its rows extract ambiguously from the published PDF — this page prints only the rows verified across two extraction modes, and points readers with unusual plans to the city clerk for the rest.)
The accessory-structure numbers
The county this site usually covers asks its own questions about shops and garages; the city answers them with a tight set of caps in its use-specific standards. Three rules carry most of the weight:
“Accessory structures shall be setback five feet (5') from any side or rear property line and shall adhere to the front setback requirements of the primary structure.”
— City of Island Park Development Code, effective 12-19-2025, section 2-3(A)(3). Retrieved 17 October 2026
“Accessory structures shall not exceed fifty percent (50%) of the square footage of the footprint of the permitted dwelling or one thousand five hundred (1,500) square feet, whichever is less.”
— City of Island Park Development Code, effective 12-19-2025, section 2-3(A)(6). Retrieved 17 October 2026
“An accessory structure shall not exceed a height of twenty-four feet (24').”
— City of Island Park Development Code, effective 12-19-2025, section 2-3(A)(7). Retrieved 17 October 2026
And one precondition before any of it: “A permitted dwelling with a valid certificate of occupancy, or a permitted dwelling under construction with a valid building permit, shall be present on the subject property.” — the shop follows the house, not the reverse, and the county side of that final-document story is the certificate of occupancy page.
The city’s permit path
Inside the city, zoning approvals run through city bodies, and the code’s summary table assigns them plainly. A Residential Zoning Permit is an administrative action: reviewed and decided by the Zoning Administrator (the city’s zoning staff officer) — no public hearing for the routine residential project. Conditional uses, by contrast, go the long way: the Planning and Zoning Commission recommends, the City Council decides, and the process is a public hearing. The code also sets decision clocks once an application is deemed complete:
“For an administrative decision identified as “ADM” on Table 7-2-1 Summary of Actions/Decisions, the Zoning Administrator shall act upon the application within thirty (30) days.”
— City of Island Park Development Code, effective 12-19-2025, section 7-3. Retrieved 17 October 2026
“the initial hearing shall be held no later than sixty (60) days after the date of the determination of completeness, unless waived by the applicant.”
— City of Island Park Development Code, effective 12-19-2025, section 7-3. Retrieved 17 October 2026
Thirty days for an administrative answer, sixty to first hearing when one is required — brisk clocks to plan a season around, and a real contrast with the county’s class system next door.
What the city code does not do
Two honest boundaries, both in the code’s own words:
- It does not absorb the other permits your project needs — building, plumbing, electrical, and mechanical each keep their own desk, in the code’s own words:
“Nothing in this Code shall eliminate the need for obtaining any other permit(s) required by this Code, other political subdivisions or agencies of the State of Idaho, including, but not limited to, building permits, plumbing, electrical, or mechanical permits.”
— City of Island Park Development Code, effective 12-19-2025, section 1-4(B). Retrieved 17 October 2026
- It sets no fee figures — the code says only:
“All applications shall be accompanied by a fee in an amount as set from time to time by City Council resolution” — so current numbers are a desk question, and this page prints none. On the map itself, the code keeps it old-fashioned: “The Zoning Map shall be located in the City Hall and shall accurately designate the current boundary lines of the Zones within the City.” The authoritative zone boundaries live on paper at City Hall — a phone call before a purchase contract has settled harder questions than a guess.
The overlays: airport and planned development
Two overlays sit on top of the zones where they apply:
- The Airport Overlay — safety-driven limits around the city’s airstrip.
- The Planned Unit Development (PUD) Overlay — the master-planned-community track: mixed-use development with a residential emphasis, approved through one comprehensive review.
If a lot’s file mentions either, the overlay’s rules ride along with the zone’s; the county’s own version of the master-planned idea is written up on the village page.
Whose rulebook applies: six moves
- Identify the parcel on the county parcel map and confirm whether it sits inside the city’s corporate limits.
- If it is city land, ask City Hall which zone the parcel carries — the zoning map lives there, per section 1-3(B)(4).
- Check the use: a detached single-family dwelling is permitted in both residential zones; anything beyond that, check Table 2.1’s P/C key.
- Run the dimensionals from Table 3-1 early — setbacks, coverage, and height decide the buildable envelope before an architect draws.
- File the Residential Zoning Permit with the Zoning Administrator — administrative, with a thirty-day action clock once complete.
- Keep every other permit on its own track — building, plumbing, electrical, mechanical — the city code explicitly does not absorb them; the signature question for whoever files is the Permission Verification page, and the county desk’s counterpart rules are on the permit-path overview.
The city code is young, short, and city-specific — and it is the rulebook inside the lines. Everything this site has written about the county’s classes, notices, and variance tracks still describes the land around the city. Inside it, the questions are the same; the answers come from a different book, a different desk, and the numbers on this page.
Common questions
Does the City of Island Park have its own zoning code?
Yes. The City of Island Park Development Code, effective December 19, 2025, governs development and land use inside the corporate city limits, in annexation-requested areas, and wherever a written agreement with Fremont County extends it. Outside those lines, the Fremont County code governs.
How do I find out whether my lot is inside city limits?
Start with the county parcel map to identify the parcel, then confirm with the city: the code's zoning map is kept at City Hall, and it 'shall accurately designate the current boundary lines of the Zones within the City.' A call before a purchase contract settles what a guess cannot.
What are the city's zoning districts?
Three zones and two overlays: R1 Residential (single-family emphasis), R2 Residential (higher density), and Commercial, plus an Airport Overlay and a Planned Unit Development Overlay that add rules where they apply.
Can I build a single-family cabin inside city limits?
Yes, by right. The 2025 code's use table lists 'Dwelling, Single Family Attached or Detached' as a permitted use in both R1 and R2. A permitted use needs the zoning permit but no hearing on whether the use itself is allowed.
What setbacks apply on a city residential lot?
Per Table 3-1: 50 feet from an arterial street, 30 feet from a local street, 20 feet side, 30 feet rear, all measured from the property line, in both R1 and R2. Accessory structures get their own rule: 5 feet from side and rear property lines.
How big can a garage or shop be in the city?
An accessory structure may not exceed 50% of the permitted dwelling's footprint or 1,500 square feet, whichever is less, with a 24-foot height cap — and the code requires a permitted dwelling present (or under construction with a valid building permit) before the accessory structure.
Does building in the city require a public hearing?
Not for a routine residential project. The Residential Zoning Permit is an administrative decision by the Zoning Administrator, who must act within 30 days of completeness. Conditional uses go to a hearing — the Planning and Zoning Commission recommends, the City Council decides, with the initial hearing within 60 days of completeness.
Does the city code replace county or state permits?
No. Section 1-4(B) says nothing in the code eliminates the need for other permits — building, plumbing, electrical, or mechanical included. Each keeps its own desk and its own paperwork.
Are transient rentals allowed inside city limits?
The 2025 code's use table lists 'Transient Rental' as a permitted use in all three zones. State law changed transient-rental licensing in 2026, which is a separate question from use permission — the rental-side rules for this market are on the rental page, and the city clerk is the desk for how the state law interacts with the city's table.
Where is the city's zoning map kept?
At City Hall. The code requires the map to 'be located in the City Hall' and to accurately designate current zone boundaries — it is the authoritative source for which zone a parcel carries.
What does the city charge for its permits?
The code sets no figures — application fees are 'as set from time to time by City Council resolution.' Current numbers are a City Hall question; no fee figure appears on this page.