Commercial Building Permit (New Construction / Commercial or Community Type Structures) in Unincorporated Valley County, Idaho

Unincorporated Valley County requires a commercial building permit (new construction / commercial or community type structures) for: Completed Building Permit Application (numbered fields 1-17), signed by the property owner even if a contractor or authorized agent prepares it -- no permit issued without owner signature (since November 7, 2022); Complete field 14 (Change of Use) only if the application converts the property's occupancy type (e.g., residential to commercial); the county's own application directions state: 'Leave this blank unless you are changing the occupancy of the property from residential to commercial, agricultural to residential, etc.' -- otherwise leave it blank; A Conditional Use Permit (CUP) from the Valley County Planning and Zoning Department 'may be required' for commercial or community type structures, per the county's own instructions -- contact Planning and Zoning directly at 208-382-7115 to determine if a specific project needs one. CUP review is a separate Planning and Zoning application, fee, and timeline, not part of the Building Department's building-permit process, and its fee/timeline are not covered by this entry; Construction plans must be stamped by an Idaho-licensed architect or engineer to certify the plans are designed in compliance with the 2018 International Codes and Valley County Ordinances -- stated specifically for commercial/community type structures in the county's instructions, in addition to the general structural-calculations-stamp requirement (effective July 15, 2019) that applies to all Valley County building permits; Structural engineering calculations with Idaho stamp, 2 copies -- required on all plans since July 15, 2019; Fully dimensioned site plan, 2 copies, showing existing/proposed structures, driveway alignment/grade/drainage, property lines, easements, and waterways; proposed use must meet the Land Use and Development Ordinance; Site plan showing outdoor lighting locations, type, and height per Ordinance #05-02; Evidence of septic/sanitary sewer approval (Central District Health or Northlake Recreational Sewer & Water District) per Ordinance #6-1-9, for any structure with plumbing or intended for human occupancy; Completed Road Department driveway permit for any new driveway off a public road (not required for private-road access); FAA Form 7460-1 approval if the site is not exempt per the FAA's online prescreen tool; Contractor registration number required before construction begins. Unlike residential work, the county's instructions state 'All commercial installations must be performed by a licensed contractor' for the separately state-permitted (Idaho DOPL) electrical, plumbing, and HVAC trades -- the homeowner/owner-self-install option available on residential projects does not apply to commercial trade work; Development Impact Fee collected at application, billed per square foot of new non-residential floor area (not per-unit, as with new residential), if the property falls within the Cascade, Donnelly, or McCall Rural Fire Protection District. If your project isn't listed, confirm with Valley County Building Department at 208-382-7114 before starting work.

The same valuation-based fee table used for residential permits applies, since the county's fee schedule lists a single 'Building Permit Fee' governed 'per IRC and IBC' (e.g., $24.00 for the first $500 of valuation, scaling up through $18,327.00 for the first $5,000,000 plus $1.00 per additional $1,000 above that), plus a plan review fee (35% in-house or up to 65% for outside consultant review). New non-residential construction also owes a per-square-foot Development Impact Fee ($0.75/sq ft Cascade, $0.52/sq ft Donnelly, $0.47/sq ft McCall) if the parcel is within one of the three rural fire protection districts. A Conditional Use Permit fee, if Planning and Zoning determines one is required, is separate and not published in the Building Department's materials. Source: Valley County Building Department Fees, Title 6 (PDF, Revised 11/12/2025); Permit Application Information and Instructions (Rev. 5/20/2026), pp.5, 9.

Please allow approximately up to 20 working days for the building permit application to be processed, per the county's own live Permit Application Information and Instructions document -- the same general estimate that applies to all Building Department permit types, with no separate or longer commercial-specific figure published. This does not include a separate Conditional Use Permit review by Planning and Zoning, if one is required. Source: Valley County Permit Application Information and Instructions (Rev. 5/20/2026), p.3.

You'll need: Building Permit Application; Site Plan Drawing (2 copies); Construction Plan Drawings (2 copies, 18x24" or 24x36" only); Engineering Calculations with Idaho Stamp (2 copies). Depending on your project, Unincorporated Valley County may also ask for: Conditional Use Permit Approval (Valley County Planning and Zoning); CDHD or Northlake Septic Permit (1 copy); Road Department Driveway Permit; FAA Form 7460-1 Approval. See the required-documents checklist on this page for details on each.

Unincorporated Valley County requires 6 inspection(s) for a commercial building permit (new construction / commercial or community type structures), in order: Excavation / Soils, Footing / Foundation, Roof and Wall Sheathing, Frame, Insulation, Final. Schedule each through Valley County Building Department (208-382-7114).

Apply through Valley County Building Department at 700 S. Main Street, PO Box 1350, Cascade, ID 83611. Phone: 208-382-7114, email: building@valleycountyid.gov. Office hours: Mon–Fri 8:00 AM – 5:00 PM (inspectors available for public assistance 8:00–10:00 AM; remainder of day governed by daily inspection schedule; after-hours/weekend calls go to voicemail). Official information: https://www.co.valley.id.us/departments/Building.

No. Commercial and community-type structures use the same Valley County Building Permit Application form as residential permits, reviewed under the 2018 IBC rather than the IRC. The county's instructions add commercial-specific requirements on top of the standard form: a Conditional Use Permit from Planning and Zoning may be required, plans must be stamped by an Idaho-licensed architect or engineer certifying code compliance, and electrical/plumbing/HVAC trade work must be performed by a licensed contractor rather than the owner. Source: Valley County Permit Application Information and Instructions (Rev. 5/20/2026), p.7, 'COMMERCIAL OR COMMUNITY TYPE STRUCTURES.'

No. Valley County does not publish a distinct tenant-improvement or remodel permit product, fee schedule, or application. Alterations to an existing structure -- commercial or residential -- fall under the county's general REPAIRS/ALTERATIONS provision: applicants are directed to speak with the Building Official before applying, who determines what plan drawings are required and may inspect the structure before issuing the permit. The work is billed under the same valuation-based Building Permit Fee table used for new construction. Source: Valley County Permit Application Information and Instructions (Rev. 5/20/2026), p.5, 'REPAIRS / ALTERATIONS' -- confirmed by a direct text search of the full document and of Valley County Code Title 6, Chapter 1, neither of which contains the word 'tenant.'