Residential Building Permit (Single-Family Dwelling, Townhouse, New Construction & Additions) in Rigby, Idaho

Rigby requires a residential building permit (single-family dwelling, townhouse, new construction & additions) for: Building permit required for new single-family dwellings, townhouses, additions, and accessory structures exceeding 120 sq ft within Rigby city limits (City Code 9-1-1; Rigby Zoning/Deck/Garage-Shed permit forms); All construction must comply with the current Idaho State Edition of the IRC (Jefferson County's Rigby-specific help document specifies the 2018 IRC); Register for and activate an account on the Jefferson County Cityworks public portal (Chrome or Firefox browser required) before applying; City of Rigby Zoning Certificate must be obtained/attached as part of the building permit application (separate from, and a prerequisite to, the county-processed building permit); Submit Parcel Number, Parcel Size, City of Rigby Zoning, Location Address, flood zone status, full dimensional/square-footage data, and setback distances (N/E/W/S) as part of the online application; Site Plan showing all property lines, setbacks, easements, North arrow, existing/proposed structures with dimensions, driveway location, and canals/rivers/roads; Complete set of plans: floor plan(s) with room dimensions, footing/foundation details with steel requirements, truss layout, engineered truss design (stamped by an Idaho-licensed engineer), and all four building elevations; Recorded warranty deed demonstrating ownership or authorization to build; Idaho Contractor's License, or a completed Contractor Exemption form if owner-built; Access Permit from Jefferson County Public Works (county roads) or Idaho Transportation Department (state highways), if applicable; Septic Permit (approved) from Eastern Idaho Public Health, or an EIPH authorization-to-connect letter if tying into an existing/private sewer system, if applicable; If in a mapped flood zone: Flood Plain Development Permit and Elevation Certificate; Water and Sewer Connection Fees must be paid to the City of Rigby at time of building permit application; a water service pit is required for new construction and must pass city Public Works inspection before covering; Mechanical (HVAC) permits and inspections for Rigby are processed by Jefferson County PZ&B as of June 1, 2026 (previously via Idaho DOPL). Plumbing and electrical permits/inspections remain with Idaho DOPL pending the county's build-out of journeyman-credentialed plumbing/electrical inspectors; All required attachments must be individually labeled PDF files uploaded through the Cityworks portal. If your project isn't listed, confirm with City of Rigby Building/Public Works Department (permit issuance & CO/CC) — building permit applications processed jointly with Jefferson County Planning, Zoning & Building under a Joint Powers Agreement at (208) 745-8111 before starting work.

In Rigby, the published Building permit fee — Total Valuation $1 to $500 is: $26.46. Additional published fees: Building permit fee — Total Valuation $501 to $2,000 — $26.46 for the first $500, plus $3.30 for each additional $100 or fraction thereof; Building permit fee — Total Valuation $2,001 to $40,000 — $75.96 for the first $2,000, plus $12.13 for each additional $1,000 or fraction thereof; Building permit fee — Total Valuation $40,000 to $100,000 — $536.90 for the first $40,000, plus $9.92 for each additional $1,000 or fraction thereof; Building permit fee — Total Valuation $100,001 to $500,000 — $1,132.10 for the first $100,000, plus $7.71 for each additional $1,000 or fraction thereof; Building permit fee — Total Valuation $500,001 to $1,000,000 — $4,216.10 for the first $500,000, plus $5.52 for each additional $1,000 or fraction thereof; Building permit fee — Total Valuation $1,000,001 to $5,000,000 — $6,976.10 for the first $1,000,000, plus $3.30 for each additional $1,000 or fraction thereof; Building permit fee — Total Valuation $5,000,001 and over — $20,176.10 for the first $5,000,000, plus $2.20 for each additional $1,000 or fraction thereof; Manufactured Home — Single Wide — $250.00; Manufactured Home — Double Wide — $500.00; Manufactured Home — Triple Wide — $750.00; Plan Review Fee — 15% of Building Permit Fee; GIS/Mapping Review Fee — $30.00 added to each application; Technology Fee — $30.00 added to each application; Inspection Fee — $90.00; Re-Inspection Fee — $90.00; Mechanical (HVAC) permit — residential, valuation $1 to $1,000 — $200.00; City of Rigby Water and Sewer Connection Fee — Amount not published on the city website or in the fee schedules reviewed; paid directly to the City of Rigby at time of building permit application per the City of Rigby Zoning Permit Application form. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

The county's published process document, which governs the shared Cityworks portal process used for Rigby applications, states plan review takes approximately 15 business days for a non-commercial (residential) building permit application after the application is confirmed complete and required fees paid. Source: Jefferson County 'Building Permit Process: Plan Submittal to CO Issuance' (Date of Form: June 26, 2025); Jefferson County 'Rigby – Single Family Dwelling, Townhouse & Additions' Help Information (Date of Form: January 2, 2024), which also states 'Minimum 15 business days may be required for plan review.'

You'll need: Rigby – Single Family Dwelling, Townhouse & Additions Building Permit Application – Help Information (Date of Form: January 2, 2024); City of Rigby Zoning Permit Application; Site Plan; Complete Set of Plans (Floor Plan, Truss Layout, Engineered Truss Design, Elevations); Recorded Warranty Deed; Idaho Contractor's License or Contractor Exemption Form. Depending on your project, Rigby may also ask for: Access Permit; Septic Permit (or EIPH Authorization to Connect); Flood Plain Development Permit and Elevation Certificate. See the required-documents checklist on this page for details on each.

Rigby requires 15 inspection(s) for a residential building permit (single-family dwelling, townhouse, new construction & additions), in order: Layout Inspection, Footing Inspection, Foundation Inspection, Water Service Pit / Water & Sewer Line Inspection (City of Rigby Public Works), Sheathing Inspection, Mechanical (HVAC) Rough-In Inspection, State Rough-In Inspections (Electrical, Plumbing), Framing Inspection, Insulation Inspection, Drywall Inspection, Sidewalk/Curb Base Inspection (City of Rigby Public Works), State/County Final Inspections (Mechanical, Electrical, Plumbing), Health Department Final, Final Inspection by Jefferson County Building Department, Final Grade and Certificate of Occupancy / Certificate of Completion Issuance (City of Rigby). Schedule each through City of Rigby Building/Public Works Department (permit issuance & CO/CC) — building permit applications processed jointly with Jefferson County Planning, Zoning & Building under a Joint Powers Agreement ((208) 745-8111).

Apply through City of Rigby Building/Public Works Department (permit issuance & CO/CC) — building permit applications processed jointly with Jefferson County Planning, Zoning & Building under a Joint Powers Agreement at 158 West Fremont Avenue, Rigby, ID 83442 (City Hall); building permit applications submitted via Jefferson County PZ&B, 210 Courthouse Way, Suite 170, Rigby, ID 83442. Phone: (208) 745-8111. Office hours: Mon–Fri, City Hall business hours; Jefferson County PZ&B Mon–Fri 9:00 AM – 5:00 PM. Official information: https://cityofrigby.gov/building-department/.

Both, in a genuine co-administration arrangement. Jefferson County Planning, Zoning & Building processes the building permit application and performs most building inspections for Rigby through the same Cityworks public portal used for unincorporated county land, under a Joint Powers Agreement. But Rigby retains its own City Code (Title 9, Chapter 1) as the legal basis for the permit requirement, requires its own Zoning Permit/Zoning Certificate, handles water/sewer connection fees and inspections and sidewalk inspections directly, and — per the county's own process document — issues the final Certificate of Occupancy or Certificate of Completion itself once the county forwards the completed file. Source: Jefferson County 'Building Permit Process: Plan Submittal to CO Issuance,' City of Rigby Building Department page, City Code 9-1-1.

As of June 1, 2026, Jefferson County PZ&B processes new Mechanical (HVAC) permit applications and inspections for Rigby, following a Joint Powers Agreement and city ordinance adoption. Electrical and plumbing permits/inspections were still being handled by the Idaho Division of Occupational and Professional Licenses (DOPL) as of the most recent reporting available, because the county had not yet hired journeyman-credentialed inspectors for those trades. Confirm current status directly with Jefferson County PZ&B or Rigby City Hall, as this is an actively transitioning arrangement. Source: 'Rigby to hold hearing for adoption of building codes,' The Jefferson Star/Post Register, March 11, 2026; Jefferson County News Flash 'HVAC Inspections,' January 5, 2026 (archived).