Residential Building Permit (New Construction / Additions) in Ketchum, Idaho

Yes. All new residential construction and additions in Ketchum require a building permit and plan review approval from the Planning & Building Department, submitted through CommunityConnect.

In Ketchum, the published Building Permit — valuation $501 to $2,000 is: $24.75 for the first $500, plus $3.20 for each additional $100 or fraction thereof. Additional published fees: Building Permit — valuation $2,001 to $25,000 — $72.75 for the first $2,000, plus $14.70 per each additional $1,000 or fraction thereof; Building Permit — valuation $25,001 to $50,000 — $410.75 for the first $25,000, plus $10.60 per each additional $1,000 or fraction thereof; Building Permit — valuation $50,001 to $100,000 — $676.00 for the first $50,000, plus $7.35 per each additional $1,000 or fraction thereof; Building Permit — valuation $100,001 to $500,000 — $1,043.50 for the first $100,000, plus $5.90 per each additional $1,000 or fraction thereof; Building Permit — valuation $500,001 to $1,000,000 — $3,395.50 for the first $500,000, plus $5.00 per each additional $1,000 or fraction thereof; Building Permit — valuation $1,000,001 and up — $5,889.25 for the first $1,000,000, plus $3.85 per each additional $1,000 or fraction thereof; Plan Check Fee — 65% of the Building Permit Fee; Development Impact Fee — Single Family (Fire/Parks/Police/Streets combined) — $2,092.00 (Fire) + $1,047.00 (Parks) + $104.00 (Police) + $4,492.00 (Streets) = $7,735.00. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Per the City's February 2026 permit process update, New Construction and Additions fall in the 'Standard' review tier: 25 calendar days for first review. Additional review rounds (if plans need revision) take 7 calendar days each.

You'll need: Building Permit Application (CommunityConnect); Construction Drawings; Construction Activity Plan (CAP) or CAP Affidavit. Depending on your project, Ketchum may also ask for: Contractor Affidavit. See the required-documents checklist on this page for details on each.

Ketchum requires 7 inspection(s) for a residential building permit (new construction / additions), in order: Footings / Foundation, Framing, Insulation, Masonry / Concrete, Roofing, Pre-Final, Final Building Inspection. Schedule each through City of Ketchum Planning & Building Department ((208) 726-7801).

Apply through City of Ketchum Planning & Building Department at 191 5th St. West (P.O. Box 2315), Ketchum, ID 83340. Phone: (208) 726-7801, email: participate@ketchumidaho.org. Office hours: Mon–Fri 8:30 AM – 5:00 PM. Official information: https://www.ketchumidaho.org/planning-building/page/building-services.

Ketchum, Idaho has adopted: 2018 International Building Code (IBC) — as amended by the Idaho Building Code Board, with Appendix O; 2018 International Residential Code (IRC) — as amended by the Idaho Building Code Board, Parts I–III and IX, with Appendix F; 2018 International Energy Conservation Code (IECC) — as amended by the Idaho Building Code Board; 2018 International Existing Building Code (IEBC) — as amended by the Idaho Building Code Board; 2018 International Swimming Pool and Spa Code (ISPSC) — adopted by State and City without amendment; 2018 International Property Maintenance Code (IPMC) — adopted by City of Ketchum; 2018 International Fire Code (IFC) — with Appendix Chapters B, C, D, E, and F; ICC A117.1 — Accessible and Usable Buildings and Facilities (as referenced in the adopted IBC); Electrical, plumbing, and mechanical trade work is regulated and permitted by the State of Idaho Division of Building Safety (DBS) / Division of Occupational and Professional Licenses (DOPL) — Ketchum does not issue its own trade permits; Modular buildings and structures are regulated by the State of Idaho Division of Building Safety (DBS). Local amendments apply — see the Ketchum overview page for the full list.

No. The City of Ketchum's own building services page states that mechanical, electrical, and plumbing permits and inspections are handled directly by the State of Idaho — not the city. Homeowners and contractors obtain these permits through the Idaho Division of Building Safety (dbs.idaho.gov) or by calling (208) 332-4700.