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Commercial Building Permit (New Construction / Tenant Improvement) in Unincorporated Gem County, Idaho

Required for new commercial and industrial buildings, and commercial tenant improvements, in unincorporated Gem County. The county's published residential building FAQ content explicitly excludes commercial/industrial projects ('This information is for Gem County residential property building permits only. It does not address commercial or industrial building permits'), so requirements are drawn from the Commercial Building Permit Application form and the shared valuation-based fee schedule and adopted 2018 IBC.

Verified 2026-08-03 · Source

When you need this permit

  • Governed by the 2018 International Building Code (IBC) as enforced under Gem County Code Title 9
  • Submit Commercial Building Permit Application with plans to Gem County Development Services, 109 S. McKinley Avenue, Emmett
  • Southwest District Health site plan approval required for the permit
  • Driveway/access approval from Gem County Road & Bridge or Idaho Transportation Department, as applicable
  • Contractor Idaho state registration number required (jobs commonly exceed the $2,000 registration threshold)
  • Electrical, plumbing, and HVAC/mechanical permits and inspections are handled by the Idaho Division of Occupational and Professional Licenses (DOPL) (DBS), not Gem County

Required documents

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Fee schedule

Building permit fee (valuation-based)Plan check fee for new/remodel/addition is 50% of the building permit fee per the same fee schedule; the fee schedule does not distinguish residential vs. commercial valuation tables
Same valuation-based schedule as the residential building permit — see Gem County Fee Schedule for Building Permits (2023)

Review timeline

Plan reviewUnincorporated Gem County’s published plan-review target
0–20 business days

How long did your Commercial Building Permit (New Construction / Tenant Improvement) permit actually take in Unincorporated Gem 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 setbacks, soil conditions, footing/foundation dimensions and rebar per 2018 IBC

  2. 2

    Framing

    Requires posted Idaho Division of Occupational and Professional Licenses (DOPL) (DBS) approval for rough-in electrical, plumbing, and mechanical work before it will pass

  3. 3

    Final

    Requires DBS final electrical/plumbing/mechanical approval and Southwest District Health final approval as applicable; Certificate of Occupancy issued upon passing

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

Tips

  • Gem County's published FAQ and review-timeline figures are explicitly scoped to residential permits only — call the Building Department at 208-365-5144 for a project-specific commercial timeline estimate.
  • Electrical, plumbing, and HVAC/mechanical work for commercial projects is still handled by the Idaho Division of Occupational and Professional Licenses (DOPL) (DBS), the same as for residential projects.
  • The valuation-based fee schedule and 50%/25% plan-check-fee structure apply identically to commercial and residential projects per the county's published fee schedule.
  • Idaho Code section 39-4117 (added 2025, ch. 272) requires the county to determine whether a commercial building-permit application is complete within 20 business days of receipt (10 business days for residential); this is a completeness-review deadline, not a full plan-approval SLA — Gem County has not published its own full review-to-issuance turnaround time for commercial permits.

Frequently asked questions

Unincorporated Gem County requires a commercial building permit (new construction / tenant improvement) for: Governed by the 2018 International Building Code (IBC) as enforced under Gem County Code Title 9; Submit Commercial Building Permit Application with plans to Gem County Development Services, 109 S. McKinley Avenue, Emmett; Southwest District Health site plan approval required for the permit; Driveway/access approval from Gem County Road & Bridge or Idaho Transportation Department, as applicable; Contractor Idaho state registration number required (jobs commonly exceed the $2,000 registration threshold); Electrical, plumbing, and HVAC/mechanical permits and inspections are handled by the Idaho Division of Occupational and Professional Licenses (DOPL) (DBS), not Gem County. If your project isn't listed, confirm with Gem County Development Services — Building Department at 208-365-5144 before starting work.

In Unincorporated Gem County, the published Building permit fee (valuation-based) is: Same valuation-based schedule as the residential building permit — see Gem County Fee Schedule for Building Permits (2023). These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

No. The county's Building FAQs page states explicitly: 'This information is for Gem County residential property building permits only. It does not address commercial or industrial building permits.' No separate commercial timeline is published; contact the Building Department directly at 208-365-5144. Source: gemcounty.org/departments_offices/development_services/building_faqs.php.

You'll need: Commercial Building Permit Application. See the required-documents checklist on this page for details on each.

Unincorporated Gem County requires 3 inspection(s) for a commercial building permit (new construction / tenant improvement), in order: Footing/Foundation, Framing, Final. Schedule each through Gem County Development Services — Building Department (208-365-5144).

Apply through Gem County Development Services — Building Department at 109 S. McKinley Avenue, Emmett, ID 83617. Phone: 208-365-5144, email: gcbuild@co.gem.id.us. Office hours: Mon 8:00 AM–4:00 PM; Tue 8:00 AM–5:00 PM; Wed 9:00 AM–5:00 PM; Thu CLOSED (until further notice for Land Use Code update work); Fri 8:00 AM–5:00 PM. Effective January 5, 2026, office may close intermittently — call ahead.. Official information: https://gemcounty.org/departments_offices/development_services/index.php.

Unincorporated Gem County, Idaho has adopted: 2018 International Building Code (IBC) as adopted by the State of Idaho — enforced under Gem County Code (GCC) Title 9: Building Regulations; 2018 International Residential Code (IRC) — enforced under GCC Title 9; 2018 International Energy Conservation Code (IECC) — enforced under GCC Title 9; Gem County is in Climate Zone 13 per IRC (minimum insulation: ceilings R-38, walls R-21, floors R-30, basement walls R-19, crawl space walls R-20); Gem County Code Title 11: Zoning Regulations (setbacks, property-line requirements); Gem County Code Title 12: Subdivision Regulations; Gem County Code Title 13: Flood Control (Gem County Flood Control Ordinance). Local amendments apply — see the Unincorporated Gem County overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-08-03.

Fee schedules

Applications & forms

Codes & ordinances

Department & other records

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 Gem County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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