Rigby building permits

Tips & gotchas

• Rigby is a genuine co-administration jurisdiction, not a pure pass-through to Jefferson County and not a fully independent building department. The City of Rigby has its own City Code Title 9, Chapter 1 (Building Code and Regulations) that adopts the building code and authorizes permit issuance, its own Building/Zoning/Public Works intake and processes for zoning permits, water/sewer connections, and sidewalk inspections — but building permit applications for houses, townhouses, and additions are submitted through the shared Jefferson County PZ&B Cityworks portal, with county staff performing plan review and most inspections. The final Certificate of Occupancy or Certificate of Completion is issued by the city itself, per the county's own written process ('if the property is within incorporated city limits, the documentation will be forwarded to the city, and they will issue the CO or CC').
• As of June 1, 2026, Jefferson County PZ&B took over new Mechanical (HVAC) permit processing and inspection for Rigby specifically, following a Joint Powers Agreement the Rigby City Council approved (discussed Feb. 19, 2026) and a subsequent public ordinance-adoption process (public hearing March 19, 2026). This was a narrow, recent expansion specific to Rigby — a January 2026 county announcement about new HVAC permitting explicitly excluded 'those within city limits,' confirming this Rigby carve-out came later and separately.
• Plumbing and electrical inspections for Rigby construction were still routed through the Idaho Division of Occupational and Professional Licenses (DOPL) as of the most recent reporting found (March 2026) — the county had not yet hired the journeyman-credentialed inspectors that state law requires for those trades to transition to county inspection. This is an actively moving target; confirm current status before relying on it.
• Rigby requires its own Zoning Permit/Zoning Certificate as a companion approval — this is not optional paperwork, it is explicitly listed as a required field/attachment on the county's own 'Rigby – Single Family Dwelling, Townhouse and Additions' building permit help document.
• Decks up to 120 sq ft only need Rigby's simple city-issued Deck Permit; decks over 120 sq ft require the full county-processed building permit. The same city-direct model applies to Fence, Garage/Shed (accessory structures), Sign, Solar (structural placement), and Sidewalk/Curb/Approach permits — these are obtained directly from Rigby City Hall, not through the Cityworks portal.
• Water and Sewer Connection Fees are billed separately by the City of Rigby, due at the time of building permit application — budget for this in addition to the county's building-permit fee invoice. No published dollar figure for this fee was found during this research pass; confirm the amount directly with Rigby City Hall or Public Works.
• Applications go through the Jefferson County Cityworks public portal — Chrome or Firefox required, account activation mandatory before submitting.
• Minimum 15 business days for plan review on a non-commercial (residential) building permit, per the county's official process document that governs the shared portal Rigby applications flow through.
• A recorded warranty deed and either an Idaho Contractor's License or a completed Contractor Exemption form are required on every residential building permit application.
• The Plan Review Fee (15% of the building permit fee), GIS/Mapping Fee ($30), and Technology Fee ($30) are added on top of the valuation-based county building permit fee for every application processed via Cityworks.
• Minimum 24 hours' notice is required for any county inspection request.