City of Riverton - Community Development Department, Building Permits & Inspections

City of Riverton, Wyoming

city

Riverton, WY

Required

Required

Riverton Municipal Code Section 15.04.010, read in full through its own codified anchor (legislation current through Ordinance No. 26-004 adopted June 16, 2026, per the codifier's own version note), adopts by reference the 2024 editions of the International Building Code (IBC), International Residential Code (IRC, excluding Chapter 11), International Mechanical Code, International Plumbing Code, International Fuel Gas Code, International Fire Code, ICC Performance Code, International Property Maintenance Code and International Existing Building Code, all by the International Code Council, plus the 2023 National Electrical Code (NFPA 70), current NFPA National Fire Codes, the 1974 National Housing Construction and Safety Standards Act as amended through 2006, and the 2017 ICC/ANSI A117.1 accessibility standard. The 2024 ICC adoption was made by Ordinance No. 25-003 (3/18/2025), the last of eleven amending ordinances listed at the end of the section running back to 2004. The section then amends the IBC in six numbered items and the IRC in eight numbered items; none of the eight IRC amendments touches IRC Chapter 9 (Roof Assemblies) -- they amend the code title, the local design-criteria table (Table R301.2), automatic sprinklers, story-above-grade-plane, a mechanical locking-port section, and two plumbing test sections. Section 15.04.040 separately restates the same local design-criteria table (frost line, ground snow load, wind speed, seismic design category) as "Table R301.2" for design and construction purposes. The City's Community Development Department page corroborates in plain language: "We have adopted the 2024 IBC, IRC, IMC, IPC, IFGC, IFC, ICCPC, IPMC, & IEBC Codes (With Amendments)," alongside the 2023 National Electrical Code effective July 1, 2023.

Required — Municipal Code Section 15.04.010's eight-item IRC amendment list, read in full, does not touch IRC Chapter 9 at all, so the base 2024 IRC drip edge provision at Section R905.2.8.5 (drip edge at eaves and rakes of asphalt shingle roofs) stands as written for the city. About drip edge

Required — Municipal Code Section 15.04.010 amends Table R301.2 (Climatic and Geographic Design Criteria) to state, in the column "Ice Barrier Underlayment Required": "Yes." Section 15.04.040, Local design criteria and loadings, independently restates the identical table with the same "Yes" entry. The same table lists Weathering as "Severe" and Frost line depth as "30 inches." About ice & water barrier

Not required — The Community Development Department's own published residential inspection sequence (Footing, Foundation Wall, Perimeter Drain, Underground Plumbing, Interior Footings, Rough Plumbing, Rough Electric, Rough Mechanical, Gas, Rough Framing/Penetration Sealing, Sewer and Water, Final Inspection) names no standalone mid-roof or dry-in inspection stage for a reroof. Roofing is folded into the combined "Rough Framing/Penetration Sealing" stage, described as: "Inspection is required after the rough electrical, plumbing, mechanical, gas, roofing and framing are complete and the structure is weather tight" -- a new-construction milestone, not a reroof-specific checkpoint.

Not required — Municipal Code Section 15.04.010's eight-item IRC amendment list, read in full, contains no amendment to IRC Chapter 9 and no occurrence of "impact," "UL 2218" or "Class 4"/"Class IV." No impact-resistant shingle mandate appears anywhere in the city's own construction code, so none applies beyond whatever the unamended base 2024 IRC itself requires (which is none, absent a local amendment).

No dollar-value or square-footage threshold is stated. Municipal Code Section 15.04.010 adopts the 2024 International Residential Code, which governs one- and two-family dwellings, and its eight-item IRC amendment list (read in full) does not touch Section R105.2, Work exempt from permit -- the only R105.2 amendment the City makes is to the International Building Code (a separate item covering platforms, decks, sidewalks and driveways not more than 30 inches above grade), which governs commercial and multi-family structures, not houses. So the base 2024 IRC exempt-work list and permit-application requirement of Section R105 apply to a house reroof unmodified by any local threshold; that ICC text sits behind the ICC paywall and is not reproduced here from any third-party republication. Confirm the exact figure, if any, with the Community Development Department directly.

Municipal Code Section 15.04.010 amends Table R301.2 (Climatic and Geographic Design Criteria), and Section 15.04.040 independently restates the identical table for design and construction purposes: Wind Design Speed 100 mph, Topographic effects No, Special wind region No, Windborne debris zone No, Ground Snow Load 30 psf, Seismic Design Category C, Weathering Severe, Frost line depth 30 inches, Termite None to slight, Ice Barrier Underlayment Required Yes, Air Freezing Index 3500, Mean Annual Temperature 45 degrees F. Manual J Design Criteria is marked "Not Determined By Jurisdiction."

TWO LAYERS MAXIMUM, SET BY THE UNAMENDED BASE 2024 IRC. Municipal Code Section 15.04.010 adopts the 2024 International Residential Code by reference and amends it in eight numbered items (code title, the local design-criteria table, automatic sprinklers, story-above-grade-plane, a mechanical locking-port section, and two plumbing test sections), read in full; none touches IRC Chapter 9 (Roof Assemblies) or Section R908. So the operative limit on re-covering an existing roof is the unamended base 2024 IRC Section R908.4, Roof recover, Exceptions: a roof recover "shall not be permitted" where "the existing roof has two or more applications of any type of roof covering" (nor where the existing covering is water soaked or deteriorated, or is slate, clay, cement or asbestos-cement tile). One existing layer may therefore be recovered; a second existing layer requires a tear-off to the deck.

NOT SET BY THE CITY, AND NOT RESTATED HERE. Municipal Code Section 15.04.010's eight-item IRC amendment list, read in full, contains no amendment to IRC Chapter 8 (Roof-Ceiling Construction) and no reference to sheathing, underlayment or fastening of a roof deck. The governing provision is therefore the base 2024 IRC Chapter 8 sheathing requirement, as adopted for the city and unmodified by Section 15.04.010. That ICC text sits behind the ICC paywall; this record does not reproduce it from any third-party republication, so a roofer needing the exact wording should read it in the code itself or ask the Community Development Department.

5% total sales/use tax in Fremont County (4% state + 1% general-purpose county option), per the Wyoming Department of Revenue Excise Tax Division's Master Rate Chart for October 2026, linked from the Division's own sales/use tax rate-chart page. Wyoming has no municipal sales tax, so this county rate applies inside Riverton.