Tusayan, Arizona has adopted: Arizona has NO statewide mandatory building code floor for general construction — code adoption is a per-city/county authority under state enabling statutes (e.g., A.R.S. Title 9 for municipalities, A.R.S. Title 11 for counties). The Town of Tusayan is a small (2020 Census population 561), recently incorporated (2010) gateway town that does NOT run an independent, self-staffed building department: it adopted its own local building-code ordinance but contracted the actual plan-review and inspection FUNCTION to Coconino County via an intergovernmental agreement (IGA), retaining only final permit issuance and pre-application/zoning gatekeeping in-house. Source: Town of Tusayan Engineering & Development page (tusayan-az.gov/engineering-development/) — 'Building permits are handled through an intergovernmental agreement with Coconino County... No construction may begin until the Town has issued its final signed building permit.'; Town of Tusayan Ordinance No. 2021-03 ('AN ORDINANCE OF THE COUNCIL OF THE TOWN OF TUSAYAN, ARIZONA, ADOPTING THE CODE OF TUSAYAN, ARIZONA, BUILDINGS AND CONSTRUCTION, UNIFORM CONSTRUCTION CODES ADOPTED, ADOPTION BY REFERENCE'), passed and adopted September 22, 2021, adopts by reference: International Building Code (IBC) 2018 Edition; International Residential Code (IRC) 2018 Edition; International Mechanical Code (IMC) 2018 Edition; International Fuel Gas Code (IFGC) 2018 Edition; International Plumbing Code (IPC) 2018 Edition; International Energy Conservation Code (IECC) 2018 Edition; International Existing Building Code (IEBC) 2018 Edition; International Swimming Pool and Spa Code (ISPSC) 2018 Edition; National Electrical Code (NEC) 2017 Edition (as published by the National Fire Protection Association); AND the Coconino County Building Code Amendments and Standards dated June 18, 2019 — all adopted by reference in full. This is the identical 2018 ICC suite / 2017 NEC combination that Coconino County's own Building Division uses countywide, confirming Tusayan's code baseline is deliberately harmonized with the County's rather than independently authored. Source: Town of Tusayan Ordinance No. 2021-03 (PDF, scanned/rendered and read directly, tusayan-az.gov/wp-content/uploads/2021/10/Ordinance-2021-03.pdf), Section I.; Ordinance 2021-03 also repeals and replaces Sections 1-10, Parts X-XII of the Coconino County Building Code Amendments and Standards (June 18, 2019) with a 'New Amendment: INNOVATIVE MATERIALS AND SYSTEMS PILOT PROGRAM, Sections 1-28' — mirroring Coconino County's own 'Innovative Materials and Systems Pilot Program' that allows owner-builders to seek an exemption from standard code provisions for alternative building methods/materials under certain circumstances. Source: Town of Tusayan Ordinance No. 2021-03, Section I; Coconino County Building Codes, Ordinances, Design Criteria page (coconino.az.gov/2391/Building-Codes-Ordinances-Design-Criteri), '2019-10 Coconino County Building Ordinance.'; As of July 2026, Coconino County's own Building Division still lists the 2018 International Code Council suite (IRC, IBC, IMC, IFGC, IPC, IECC, IEBC) plus the 2017 NEC as its CURRENT adopted codes (per the County's 'Current Codes and Ordinances' list), adopted via County Ordinance 2019-10. The County has begun a public process (open house held March 23, 2026) toward adopting the 2024 ICC suite and 2023 NEC, but as of this record's lastVerified date that update had NOT yet been formally adopted — the 2018/2017 baseline remains controlling for both the County and, by Ordinance 2021-03's adoption-by-reference, for Tusayan. Source: Coconino County Building Codes, Ordinances, Design Criteria page (coconino.az.gov/2391/Building-Codes-Ordinances-Design-Criteri), 'Current Codes and Ordinances' and 'Building Code Adoption' sections.; Town of Tusayan Zoning Code, Chapter 9, §9.3(B): 'A building permit, as required by the Building Code, shall be obtained prior to the construction, reconstruction, alteration or change in use of any building or other structure' — the Zoning Code's own building-permit trigger clause, applicable in the G (General), AR (Agricultural-Residential), and RR (Rural Residential) zones. Source: Town of Tusayan Zoning Code § 9.3, Property Development Standards: G, AR and RR Zones (codelibrary.amlegal.com/codes/tusayan/latest/tusayan_az_zone/0-0-0-3764).; Manufactured homes and factory-built buildings are licensed and permitted through a joint state/local structure: the Arizona Department of Fire, Building and Life Safety (Office of Manufactured Housing) sets manufacturer/installer/retailer licensing and issues State/IGA installation permits, while local site/foundation/utility compliance for a manufactured home placed within Tusayan town limits is handled through the same Town-Coconino County IGA building-permit pathway as other structures. Source: Coconino County Online Permit Applications page (coconino.az.gov/2390/Online-Permit-Applications), 'Manufactured Homes and Factory Built Projects' section; Coconino County Building Permitting Fees PDF, Part III, 'Manufactured Homes and Factory Built Building Permit Fees.'; Applicants must first submit a Pre-Application Checklist to the Town of Tusayan and receive the Town's endorsement before proceeding to civil or building permit review; the Town strongly encourages scheduling a pre-application meeting with the Town Manager given the number of agencies potentially involved (Coconino County Community Development, Coconino County Flood Control District, Tusayan Sanitary District, Tusayan Fire District, Arizona State Fire Marshal, Grand Canyon Unified School District). Source: Town of Tusayan Engineering & Development page; Town of Tusayan Pre-Application Checklist (tusayan-az.gov/wp-content/uploads/2025/10/Town-of-Tusayan-Pre-Applicaton-Checklist-103025.pdf).. Local amendments apply — see the Tusayan overview page for the full list.