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Residential Building Permit (New Construction / Addition) in Unincorporated Elmore County, Idaho

Required for new single-family dwellings, additions, manufactured homes, accessory structures over 200 square feet, and other residential construction in unincorporated Elmore County. Governed by the 2018 International Residential Code (IRC) as adopted statewide and enforced by the Elmore County Land Use and Building Department. All building applications must be preceded by an approved Zoning Permit — no exceptions. Applications may be submitted by mail, in person, or by email to both department contacts.

Verified 2026-07-08 · Source

When you need this permit

  • A Zoning Permit must be approved BEFORE the Building Permit application will be accepted — no exceptions
  • Applicant must have a completed and inspected driveway before the building permit is issued
  • All structures over 200 square feet require an Elmore County Building Permit
  • Property lines must be staked by a licensed surveyor
  • Detailed site plan (need not be to scale) showing dimensions of the entire property, labeled existing and proposed structures, and approximate distances to property boundaries and between structures
  • Location of existing septic/well relative to structures; any easements shown
  • One printed complete set of building plans, 1/4" to 1" scale, full size 24"x36" for residential structures, including a floor plan with rooms labeled
  • RES Check (energy/R-values) per www.energycodes.gov or prescriptive requirements
  • Manuals J, S, and D heating/cooling calculations (typically from HVAC contractor) for new construction — not required for solar or fireplace-only permits
  • Central District Health Department signature (not required for solar or fireplace-only permits)
  • Highway District signature (not required for solar or fireplace-only permits)
  • Fire District signature confirming driveway meets fire-access specs, if property is in a fire district (required even for solar and fireplace permits)
  • Flood Development Permit with Elevation Certificate ($100 fee) required if the structure is located in a flood area
  • Contractors must provide current Idaho Contractor Registration number and expiration date Contractor
  • Plans for structures above ~5,000 ft elevation (above Tollgate) require an engineer/design-professional-stamped report or engineered truss diagrams for 120 lbs/sq ft snow load and 115 mph wind speed

Required documents

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Fee schedule

Plan Review Fee — ResidentialElmore County Building Permit Application (revised 06-2026) and Fee Schedule (effective October 15, 2025); paid at time of application submission, separate from the building permit fee itself
$100.00
Plan Review Fee — Solar, Fireplace, and Re-RoofElmore County Building Permit Application (revised 06-2026)
$150.00
Building Permit FeeSeparate from the plan review fee; fee amounts rounded to the nearest dollar. Fee Schedule effective October 15, 2025.
Valuation-based per IBC Section 109 and the International Code Council Building Valuation Data (updated every 6 months); calculated by the Elmore County Building Official based on square footage/project value
Building Permit DepositRefundable after final inspection if no additional county time/resources used beyond the normal permit process. Fee Schedule effective October 15, 2025.
Tiered by building permit fee amount: <$500 fee = $100 deposit; $500-$1,000 = $250; $1,000-$2,000 = $500; $2,000-$3,000 = $750; $3,000-$4,000 = $1,000; >$4,000 = 25% of building permit fee
Zoning Permit Fee (prerequisite)Required before the building permit application is accepted; Fee Schedule effective October 15, 2025
$50.00
Re-inspection Fee (beyond 2 failed inspections)Fee Schedule effective October 15, 2025; also stated in Building Permit Application as $50 deducted from deposit after the second failed inspection of the same type
$50.00 per inspection

Review timeline

Plan reviewUnincorporated Elmore County’s published plan-review target
14–21 business days

How long did your Residential Building Permit (New Construction / Addition) permit actually take in Unincorporated Elmore County?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Footing/Foundation

    Verify footing depth per local zone (24"/30"/36" below frost line depending on elevation) and foundation layout before backfill

  2. 2

    Framing

    After framing, sheathing, and rough-in trades complete, before insulation or wall cover

  3. 3

    Final

    All work complete per approved plans; property address marker must be installed by the county before final inspection

See the full Unincorporated Elmore County inspection guide — scheduling & re-inspection fees →

Tips

  • A Zoning Permit ($50, 2-4 week processing) must be approved BEFORE the Building Permit application will even be accepted — plan for this as a sequential, not parallel, step.
  • Electrical, plumbing, and HVAC/mechanical permits are NOT issued by Elmore County — they are administered by the Idaho Division of Occupational and Professional Licenses (DOPL). Contact DOPL at 208-334-3950 (IVR) or 208-334-3233.
  • Residential plan review is published at 2-3 weeks under the 2018 IRC; commercial review can take up to 4-6 weeks under the 2018 IBC.
  • Inspections must be called in the day before, between 8:30 AM and 4:30 PM — no same-day inspections. Inspections below 5,000 ft elevation occur Monday/Wednesday/Friday; inspections above 5,000 ft (Pine, Featherville, Atlanta areas) occur Tuesday/Thursday.
  • Approved plans are only held 30 days — the permit fee must be paid within that window or the applicant must reapply and pay the plan review fee again.
  • One seasonal extension is granted without fee for permits with maintained construction progress in the Pine, Featherville, Fall Creek, Rocky Bar, Prairie, and Atlanta areas; weather/natural-disaster extensions are also fee-free.
  • A completed and inspected driveway is required before Elmore County will issue a residential building permit.
  • Prior to the first inspection, the site address must be posted at the public road entrance and property boundaries must be clearly marked, or the inspection will not proceed.
  • Garbage dumpster and sanitary facilities (e.g., a Port-a-Potty) must be on-site (not in the roadway) during construction, or inspections will not be performed.

Frequently asked questions

Yes. All building permit applications must be preceded by an approved Zoning Permit, with no exceptions. The Zoning Permit costs $50, is valid for 180 days, and takes 2-4 weeks to process. Source: Elmore County Zoning Permit Application and Building Permit Application, elmorecounty.org/land-use-and-building-department/applications-document-links/.

In Unincorporated Elmore County, the published Plan Review Fee — Residential is: $100.00. Additional published fees: Plan Review Fee — Solar, Fireplace, and Re-Roof — $150.00; Building Permit Fee — Valuation-based per IBC Section 109 and the International Code Council Building Valuation Data (updated every 6 months); calculated by the Elmore County Building Official based on square footage/project value; Building Permit Deposit — Tiered by building permit fee amount: <$500 fee = $100 deposit; $500-$1,000 = $250; $1,000-$2,000 = $500; $2,000-$3,000 = $750; $3,000-$4,000 = $1,000; >$4,000 = 25% of building permit fee; Zoning Permit Fee (prerequisite) — $50.00; Re-inspection Fee (beyond 2 failed inspections) — $50.00 per inspection. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Residential plan review is published at 2-3 weeks under the 2018 International Residential Code. Commercial plan review can take up to 4-6 weeks under the 2018 International Building Code. Source: elmorecounty.org/land-use-and-building-department/building-permit-requirements/.

You'll need: Elmore County Zoning Permit Application; Elmore County Building Permit Application (revised 06-2026); Full-Size Building Plan Set (24"x36"); RES Check / Energy Compliance; ACCA Manuals J, D, and S; Central District Health Department Signature; Highway District Signature. Depending on your project, Unincorporated Elmore County may also ask for: Flood Development Permit with FEMA Elevation Certificate. See the required-documents checklist on this page for details on each.

Unincorporated Elmore County requires 3 inspection(s) for a residential building permit (new construction / addition), in order: Footing/Foundation, Framing, Final. Schedule each through Elmore County Land Use and Building Department (208-587-2142).

Apply through Elmore County Land Use and Building Department at 2280 American Legion Blvd, Mountain Home, ID 83647. Phone: 208-587-2142, email: snuner@elmorecountyid.gov. Office hours: Mon–Fri 8:00 AM – 5:00 PM. Official information: https://elmorecounty.org/land-use-and-building-department/.

Unincorporated Elmore County, Idaho has adopted: 2018 International Residential Code (IRC) — residential construction, as adopted statewide by the State of Idaho and enforced by Elmore County Land Use and Building Department (Resolution 790-21, approved January 15, 2021); 2018 International Building Code (IBC) — commercial/industrial construction, as adopted statewide by the State of Idaho and enforced by Elmore County (Resolution 790-21); 2018 International Energy Conservation Code (IECC) — Residential provisions, per Idaho statewide adoption; 2018 Idaho Manufactured Home Installation Standards — governs manufactured/mobile home placement and permanent foundation requirements; Elmore County Zoning and Development Ordinance — local zoning, setback, and land-use overlay provisions administered alongside the building code. Local amendments apply — see the Unincorporated Elmore County overview page for the full list.

No. All electrical, plumbing, and HVAC/mechanical permits and inspections in unincorporated Elmore County are administered by the State of Idaho Division of Occupational and Professional Licenses (DOPL), not the county. Contact DOPL at 208-334-3950 (IVR permit status line) or 208-334-3233 (main line). Source: A Reference Guide to Building in Elmore County, Elmore County Land Use and Building Department.

Sources & verification

Verified against official sources. Last reviewed 2026-07-08.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Elmore County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

Other permits in Unincorporated Elmore County

Commercial Building Permit (New Construction / Tenant Improvement)Manufactured Home Placement PermitAgricultural Building Exemption (Notice of Proposed New Agricultural Building)Solar Roof/Ground Installation PermitEV Charger / EVSE Permit

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