| IBC — International Building Code | 2024 IBC — the International Building Code, 2024 Edition, published by the International Code Council, adopted BY REFERENCE AND VERBATIM (no Wyoming amendments) at 041-1 Wyo. Code R. ch. 1, s 2(a)(i). Effective 2024-06-28. WYOMING IS ON THE CURRENT CYCLE: this is one of the very few states whose adopted edition equals the newest published I-Code, so the usual Lane F warning inverts here — 2024 is correct for Wyoming and 2021 would be wrong. THE ADOPTION IS FIRE/LIFE-SAFETY-DRIVEN, NOT A GENERAL BUILDING CODE: it is made by the Department of Fire Prevention and Electrical Safety (State Fire Marshal) under W.S. 35-9-106(a), and it reaches a building through the State Fire Marshal plan-review requirement, not through a general statewide building department. Wyoming has NO general statewide building code for private construction; one- and two-family dwellings outside a local code area are governed by no adopted building code at all. | 041-1 Wyo. Code R. ch. 1, s 2(a)(i) (Codes and Standards); authority W.S. 35-9-106(a) and 16-3-101 through 16-3-104 · source ↗ |
| IEBC — International Existing Building Code | 2024 IEBC — the International Existing Building Code, 2024 Edition, published by the International Code Council, adopted BY REFERENCE AND VERBATIM (Wyoming makes NO amendments to it) at 041-1 Wyo. Code R. ch. 1, s 2(a)(ii) ("Codes and Standards"), Wyoming State Fire Marshal. ADOPTING WORDS AS PRINTED: "The International Existing Building Code, 2024 Edition, published by the International Code Council." *** WYOMING IS ONE OF THE VERY FEW STATES IN THIS TABLE ON A 2024-CYCLE CODE AND IT IS ALSO ONE OF THE FEW WITH **NO AMENDMENT LAYER AT ALL** — THE TWO FACTS ARE RELATED AND THE COMBINATION IS THE WORST CASE FOR THIS PROJECT: NOTHING STATE-AUTHORED TO PUBLISH, AND THE ENTIRE OPERATIVE TEXT IS THE NEWEST ICC-COPYRIGHTED EDITION. *** SCOPE CAUTION CARRIED FROM THE SIBLING ROWS: THE ADOPTING BODY IS THE **FIRE MARSHAL**, ACTING UNDER W.S. 35-9-106(a) (fire prevention), NOT A BUILDING-CODE AGENCY. WYOMING HAS NO STATEWIDE BUILDING DEPARTMENT AND NO STATEWIDE BUILDING PERMIT; THESE CODES BIND THROUGH THE FIRE MARSHAL'S JURISDICTION AND THROUGH LOCAL ADOPTION, NOT AS A UNIVERSAL CONSTRUCTION PERMIT REGIME. Prior value was the bare string "2024" with the 18-character citation "WSFM adopted rules", no instrument, no effective date and a wsfm.wyo.gov plan-review LANDING PAGE as source_url — the Louisiana/Virginia landing-page trap, fourth and fifth instances of it in this state. | 041-1 Wyo. Code R. ch. 1 ("General Provisions"), s 2(a)(ii) (Codes and Standards), Wyoming State Fire Marshal. AUTHORITY AS PRINTED, s 1: "These rules are adopted pursuant to Wyoming Statutes 35-9-106(a) and 16-3-101 through -104." SUBSECTION (b) LIMITS THE INCORPORATION: the incorporated codes DO NOT include later amendments or editions beyond the 2024 Edition, and copies are available for inspection at "the Capitol Hill Building, 320 W. 25th Street, 3rd Floor, Cheyenne, Wyoming" — i.e. the base text is available for inspection, NOT state-published. Read first-hand from the filed rule at wyoleg.gov, 2026-09-20; effective_date 2024-06-28 is carried from the six sibling Wyoming rows filed under the same instrument and was NOT re-read from the filing record this run (see gaps). Prior citation was the 18-character label "WSFM adopted rules". · source ↗ |
| IECC — International Energy Conservation Code | NO STATEWIDE ENERGY CODE — IECC ADOPTED ONLY DERIVATIVELY. Wyoming adopts no freestanding statewide energy conservation code. 041-1 Wyo. Code R. ch.1 s 2(a)(vi) incorporates the IECC only as to "Provisions of the International Residential Code, the International Property Management Code, the International Plumbing Code, and the International Energy Conservations Code, as they are referenced in chapters 1 - 10 of the International Building Code, the International Fire Code, the International Mechanical Code, and the International Fuel Gas Code." The rule states NO IECC edition year; the derivative reference travels with the 2024 editions of the four primary codes adopted at s 2(a)(i)-(v). A whole-code IECC answer for Wyoming would be WRONG. The Wyoming State Fire Marshal's own statewide adopted-code list (2024 IBC, IEBC, IFC, IFGC, IMC; 2023 NEC, 2026 NEC eff. 2026-07-01) names no energy code at all. Energy requirements for a Wyoming building are therefore a MUNICIPAL/COUNTY ORDINANCE question, and are absent where no local ordinance exists. | 041-1 Wyo. Code R. ch. 1, s 2(a)(vi) (Codes and Standards); authority W.S. 35-9-106(a), 16-3-101 to -104 · source ↗ |
| IFC — | 2024 IFC — INCLUDING APPENDICES D, E, F AND G. Adopted verbatim at 041-1 Wyo. Code R. ch. 1, s 2(a)(iii): "The International Fire Code, 2024 Edition, published by the International Code Council, including, Appendix D, Appendix E, Appendix F and Appendix G." The filed rule shows the amendment on its face as "2021 2024", i.e. this filing moved Wyoming from the 2021 IFC to the 2024 IFC. The appendix list is part of the adoption and must be served with it — D (fire apparatus access roads), E (hazard categories), F (hazard rankings) and G (cryogenic fluids) are Wyoming law, and an answer giving only "2024 IFC" understates what is enforceable. Statewide scope: the Wyoming State Fire Marshal states "The State of Wyoming, on June 28, 2024 adopted the 2024 International Codes." | 041-1 Wyo. Code R. ch. 1, s 2(a)(iii) (Codes and Standards); authority W.S. 35-9-106(a), 16-3-101 to -104 · source ↗ |
| IFGC — International Fuel Gas Code | 2024 IFGC — the International Fuel Gas Code, 2024 Edition, published by the International Code Council, adopted BY REFERENCE AND VERBATIM (Wyoming makes NO amendments to it) at 041-1 Wyo. Code R. ch. 1, s 2(a)(v) ("Codes and Standards"), Wyoming State Fire Marshal. ADOPTING WORDS AS PRINTED: "The International Fuel Gas Code, 2024 Edition, published by the International Code Council." *** THE IFGC IS ALSO A **CARRIER CODE** IN WYOMING, WHICH IS THE THING WORTH KNOWING ABOUT IT: s 2(a)(vi) READS IN FULL, VERBATIM — "Provisions of the International Residential Code, the International Property Management Code, the International Plumbing Code, and the International Energy Conservations Code, as they are referenced in chapters 1 - 10 of the International Building Code, the International Fire Code, the International Mechanical Code, and the International Fuel Gas Code." SO THE IRC, IPMC, IPC AND IECC ENTER WYOMING LAW **ONLY** THROUGH CROSS-REFERENCES INSIDE CHAPTERS 1-10 OF FOUR NAMED CODES, ONE OF WHICH IS THIS ONE. A CHANGE TO WHAT THE IFGC CROSS-REFERENCES CHANGES WHICH PLUMBING AND ENERGY PROVISIONS ARE LAW IN WYOMING, WITH NO WYOMING RULEMAKING. [THE MISSPELLING "International Energy Conservations Code" AND THE TITLE "International Property Management Code" — THE ICC PUBLISHES THE INTERNATIONAL PROPERTY *MAINTENANCE* CODE — ARE IN THE RULE AS PRINTED AND ARE REPRODUCED AS PRINTED.] Prior value was the bare string "2024" with the 18-character citation "WSFM adopted rules", no instrument, no effective date and a wsfm.wyo.gov plan-review LANDING PAGE as source_url. | 041-1 Wyo. Code R. ch. 1 ("General Provisions"), s 2(a)(v) (Codes and Standards), Wyoming State Fire Marshal. AUTHORITY AS PRINTED, s 1: "These rules are adopted pursuant to Wyoming Statutes 35-9-106(a) and 16-3-101 through -104." s 2(b) FREEZES THE INCORPORATION: the incorporated codes do NOT include later amendments or editions beyond the 2024 Edition, and copies are available for inspection at "the Capitol Hill Building, 320 W. 25th Street, 3rd Floor, Cheyenne, Wyoming". THE FULL ADOPTED LIST AT s 2(a), READ THIS RUN, IS: (i) IBC 2024; (ii) IEBC 2024; (iii) IFC 2024 "including, Appendix D, Appendix E, Appendix F and Appendix G"; (iv) IMC 2024; (v) IFGC 2024; (vi) the derivative-incorporation sentence. **FIVE WHOLE CODES AND ONE CROSS-REFERENCE CLAUSE — THAT IS THE ENTIRETY OF WYOMING'S STATE CODE ADOPTION.** Read first-hand from the filed rule at wyoleg.gov, 2026-09-20; effective_date 2024-06-28 carried from the sibling Wyoming rows under the same instrument and NOT re-read from the filing record this run (see gaps). Prior citation was the 18-character label "WSFM adopted rules". · source ↗ |
| IMC — International Mechanical Code | 2024 IMC — the International Mechanical Code, 2024 Edition, published by the International Code Council, adopted BY REFERENCE AND VERBATIM (no Wyoming amendments, NO appendices named) at 041-1 Wyo. Code R. ch. 1, s 2(a)(iv). Effective 2024-06-28. WYOMING IS ON THE CURRENT CYCLE: the adopted edition equals the newest published I-Code, so the usual Lane F warning INVERTS here — 2024 is correct for Wyoming and 2021 would be wrong. The filed rule shows the change on its face as "2021 2024", i.e. this filing moved Wyoming from the 2021 IMC to the 2024 IMC. THE ADOPTION IS FIRE/LIFE-SAFETY-DRIVEN, NOT A GENERAL MECHANICAL CODE PROGRAM: it is made by the Department of Fire Prevention and Electrical Safety (State Fire Marshal) under W.S. 35-9-106(a), and it reaches a building through the State Fire Marshal plan-review requirement, not through a general statewide building department. Wyoming has NO general statewide building code for private construction. | 041-1 Wyo. Code R. ch. 1, s 2(a)(iv) (Codes and Standards); authority W.S. 35-9-106(a) and 16-3-101 through 16-3-104 · source ↗ |
| IPC — International Plumbing Code | 2024 IPC — ADOPTED ONLY DERIVATIVELY. Wyoming adopts no freestanding statewide plumbing code. 041-1 Wyo. Code R. ss 1-2 incorporates the 2024 IPC only as to "provisions ... as they are referenced in chapters 1 - 10" of the primary adopted codes (2024 IBC, IEBC, IFC, IMC, IFGC). A whole-code IPC answer for Wyoming would be wrong; only IPC provisions cross-referenced from those chapters are state law. | 041-1 Wyo. Code R. ss 1-2 (Codes and Standards); authority W.S. 35-9-106(a), 16-3-101 to -104 · source ↗ |
| IRC — International Residential Code | NO WHOLE-CODE IRC ADOPTION IN WYOMING — THE IRC IS INCORPORATED ONLY DERIVATIVELY, AND NO EDITION YEAR IS STATED FOR IT ANYWHERE. Wyoming adopts no freestanding statewide residential code. The only place the International Residential Code appears in the state's adopting rule is 041-1 Wyo. Code R. ch. 1, s 2(a)(vi), verbatim: "Provisions of the International Residential Code, the International Property Management Code, the International Plumbing Code, and the International Energy Conservations Code, as they are referenced in chapters 1 - 10 of the International Building Code, the International Fire Code, the International Mechanical Code, and the International Fuel Gas Code." (The misspelling "Energy Conservations Code" is as printed in the rule.) So only those IRC provisions that a chapter 1-10 cross-reference in the 2024 IBC/IFC/IMC/IFGC actually reaches are Wyoming law. THE DERIVATIVE REFERENCE CARRIES NO EDITION OF ITS OWN and travels with the 2024 editions of the four primary codes adopted at s 2(a)(i)-(v). ANY ANSWER OF THE FORM "WYOMING = 2024 IRC" OR "WYOMING = 2021 IRC" IS WRONG. A one- or two-family dwelling in Wyoming outside a municipal or county code area is governed by NO adopted residential building code at all. | 041-1 Wyo. Code R. ch. 1, s 2(a)(vi) (Codes and Standards); authority W.S. 35-9-106(a) and 16-3-101 through 16-3-104 · source ↗ |
| NEC — National Electrical Code (NFPA 70) | 2026 NEC | W.S. 35-9-120 (Wyoming Statutes, Title 35, Ch. 9, Art. 1 -- Dept. of Fire Prevention & Electrical Safety). THE STATUTE ADOPTS THE NEC BY NAME AND NAMES NO EDITION; the edition in force is set administratively by the Dept. of Fire Prevention & Electrical Safety / State Fire Marshal. 2026 NEC in force statewide effective 7/1/2026 per the administering agency's published record. · source ↗ |