Electrical / Mechanical / Plumbing / Stucco Permit in Unincorporated Millard County, Utah

Unincorporated Millard County requires an electrical / mechanical / plumbing / stucco permit for: Electrical work (residential or commercial/pivot); Mechanical (HVAC) installation or replacement; Plumbing installation or alteration; Stucco application (including after-the-fact stucco permits). If your project isn't listed, confirm with Millard County Building Department at (435) 864-1400 before starting work.

Per the Millard County combined Electrical/Mechanical/Plumbing/Stucco permit application form: Electrical is $45 residential ($75 commercial/pivot), Mechanical is $45, Plumbing is $45, and Stucco is $75 ($100 if applied without a permit first).

Plan review for an electrical / mechanical / plumbing / stucco permit in Unincorporated Millard County typically runs 3–14 business days. This is an estimate, not a published figure — confirm current review times with Millard County Building Department at (435) 864-1400.

You'll need: Millard County Building Permit Application — Electrical/Mechanical/Plumbing/Stucco. Depending on your project, Unincorporated Millard County may also ask for: Contractor License Number. See the required-documents checklist on this page for details on each.

Unincorporated Millard County requires 2 inspection(s) for an electrical / mechanical / plumbing / stucco permit, in order: Rough-In, Final. Schedule each through Millard County Building Department ((435) 864-1400).

Apply through Millard County Building Department at 71 South 200 West, PO Box 854, Delta, UT 84624. Phone: (435) 864-1400, email: buildingofficial@millardcounty.org. Office hours: Monday–Thursday 8:00 AM – 5:30 PM; Friday 8:00 AM – 12:00 PM. Official information: https://millardcounty.gov/your-government/county-departments/building-inspection/.

Unincorporated Millard County, Utah has adopted: 2021 International Residential Code (IRC) with State of Utah Amendments — per Utah Code § 15A-2-103(1)(b); unchanged by the July 1, 2026 statewide update. Millard County Building Inspection Department page (adopted codes list) also lists 2021 IRC — live-checked 2026-07-16, page unchanged since last check.; 2024 International Building Code (IBC) with State of Utah Amendments — per Utah Code § 15A-2-103(1)(a), effective since July 1, 2026, superseding the 2021 IBC. NOTE (2026-07-16, live-checked): the Millard County Building Inspection Department page still lists 2021 IBC — the county page is lagging the statewide statutory update by 15+ days; the statute is controlling.; 2024 International Plumbing Code (IPC) with State of Utah Amendments — per Utah Code § 15A-2-103(1)(d), effective since July 1, 2026, superseding the 2021 IPC. NOTE (2026-07-16, live-checked): the county page still lists 2021 IPC — page lag, statute controls.; 2024 International Mechanical Code (IMC) with State of Utah Amendments — per Utah Code § 15A-2-103(1)(e), effective since July 1, 2026, superseding the 2021 IMC. NOTE (2026-07-16, live-checked): the county page still lists 2021 IMC — page lag, statute controls.; 2023 National Electrical Code (NEC) per Utah Code § 15A-2-103(1)(g), statewide in force and NOT changed by the July 1, 2026 update — NOTE: this is a separate, pre-existing discrepancy: Millard County's own Building Inspection page lists 2020 NEC (live-checked again 2026-07-16, page still shows 2020 NEC, unrelated to the 2021→2024 code-edition transition affecting the other codes below). Contractors/homeowners should confirm current applicability with the Building Official as the county page lags the statewide amendment.; 2024 International Fuel Gas Code (IFGC) with State of Utah Amendments — per Utah Code § 15A-2-103(1)(f), effective since July 1, 2026, superseding the 2021 IFGC. NOTE (2026-07-16, live-checked): the county page still lists 2021 IFGC — page lag, statute controls.; 2024 International Energy Conservation Code (IECC), Residential & Commercial — per Utah Code § 15A-2-103(1)(h), effective since July 1, 2026, superseding the 2021 IECC. The statute adopts a single IECC edition with no residential/commercial split (this file's existing single combined line already reflects that — no split to collapse). NOTE (2026-07-16, live-checked): the county page still lists 2021 IECC — page lag, statute controls.; 2024 International Existing Building Code (IEBC) — per Utah Code § 15A-2-103(1)(i), effective since July 1, 2026. Not separately listed on the Millard County Building Inspection Department page (live-checked 2026-07-16, page has no IEBC entry at all) — added here because § 15A-2-103 adopts it statewide regardless of the county page's omission.; 2024 residential provisions of the International Swimming Pool and Spa Code (ISPSC) — per Utah Code § 15A-2-103(1)(n), effective since July 1, 2026. Not separately listed on the Millard County Building Inspection Department page (live-checked 2026-07-16, page has no ISPSC entry at all) — added here because § 15A-2-103 adopts it statewide regardless of the county page's omission.; Utah Wildland Urban Interface Code; NOTE (updated 2026-07-16): The July 1, 2026 statewide code-edition transition (2024 IBC/IPC/IMC/IFGC/IECC replacing 2021 editions, per Utah Code § 15A-2-103 version effective 7/1/2026, superseded 1/1/2027) took effect 15 days ago; the next statute version's editions were diffed and confirmed identical, so this should not go stale again around 1/1/2027. 2021 IRC is unchanged by this transition. The International Fire Code is NOT adopted by § 15A-2-103 (it is addressed separately in Title 15A Chapter 5) and is not otherwise referenced in this file..