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Sign Permit in Unincorporated Duchesne County, Utah

Duchesne County publishes no distinct sign permit application or fee. County Code § 8-9-14 ('Signs, On Premises And Off Premises Advertising') sets sign STANDARDS — not a permit process or fee schedule. Per County Code § 8-1-4 ('Building Permits Required; Exceptions'): 'No construction shall occur except pursuant to a validly issued, unexpired and unrevoked building permit' — and a sign attached to real property falls under that definition. A sign in unincorporated Duchesne County is therefore reviewed and permitted under whichever Building Permit type already applies to the property (Commercial Building Permit, Commercial Tenant Improvement Permit, or Change of Use Building Permit), not as a standalone sign permit.

Reviewed 2026-07-22 · Source

When you need this permit

  • Installation, structural alteration, or off-premises placement of an advertising or on-premises business sign in unincorporated Duchesne County (or the Towns of Altamont/Tabiona, which fully contract building-permit review to the county)
  • Compliance with County Code § 8-9-14: no sign that creates visual confusion or a traffic hazard, no sign placed within a public right-of-way, and any electrical or structural sign work must meet the adopted NEC/IBC
  • Sign height may not exceed 50 feet measured from roadway grade, per County Code § 8-9-14
  • Written property-owner permission required for any off-premises advertising sign, per County Code § 8-9-14
  • Per County Code § 8-1-4, no construction — including a sign attached to real property — may occur without a validly issued building permit; filed as part of the underlying Building Permit Application (Commercial, Commercial TI, or Change of Use) applicable to the property, since Duchesne County has no standalone sign permit application

Required documents

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Fee schedule

Filing fee
Not published — contact the department

Review timeline

Plan review
Not published — contact the department

How long did your Sign Permit permit actually take in Unincorporated Duchesne County?

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Inspection process

  1. 1

    Final Sign Inspection

    Confirms the installed sign matches the approved plan, meets the County Code § 8-9-14 height cap and public right-of-way setback, and that any electrical connection meets NEC requirements.

See the full Unincorporated Duchesne County inspection guide — scheduling & re-inspection fees →

Tips

  • Duchesne County has no dedicated sign-permit fee or application — bring your sign plan (dimensions, height, mounting, and any electrical service) to the Department of Building Safety, (435) 738-1150, so staff can attach it to the correct underlying Building Permit type for your property.
  • The 50-foot height cap in County Code § 8-9-14 is measured from roadway grade, not from the sign's own base — confirm the reference elevation with Planning & Zoning, (435) 738-1135 or 1152, for sloped or graded sites.
  • An off-premises advertising sign (e.g., a billboard on someone else's land) requires written permission from that property's owner before the county will process the permit, per County Code § 8-9-14.
  • If a business closes or the advertised product/service is discontinued, County Code § 8-9-14 requires the sign owner to remove the sign within 90 days of receiving a removal notice from the county.

Frequently asked questions

Unincorporated Duchesne County requires a sign permit for: Installation, structural alteration, or off-premises placement of an advertising or on-premises business sign in unincorporated Duchesne County (or the Towns of Altamont/Tabiona, which fully contract building-permit review to the county); Compliance with County Code § 8-9-14: no sign that creates visual confusion or a traffic hazard, no sign placed within a public right-of-way, and any electrical or structural sign work must meet the adopted NEC/IBC; Sign height may not exceed 50 feet measured from roadway grade, per County Code § 8-9-14; Written property-owner permission required for any off-premises advertising sign, per County Code § 8-9-14; Per County Code § 8-1-4, no construction — including a sign attached to real property — may occur without a validly issued building permit; filed as part of the underlying Building Permit Application (Commercial, Commercial TI, or Change of Use) applicable to the property, since Duchesne County has no standalone sign permit application. If your project isn't listed, confirm with Duchesne County Department of Building Safety at (435) 738-1150 before starting work.

Unincorporated Duchesne County does not publish a plan-review timeline for this permit. Contact Duchesne County Department of Building Safety at (435) 738-1150 for current turnaround.

You'll need: Building Permit Application; Sign Plan / Elevation Detail. Depending on your project, Unincorporated Duchesne County may also ask for: Off-Premises Sign Property-Owner Consent. See the required-documents checklist on this page for details on each.

Unincorporated Duchesne County requires 1 inspection(s) for a sign permit, in order: Final Sign Inspection. Schedule each through Duchesne County Department of Building Safety ((435) 738-1150).

Apply through Duchesne County Department of Building Safety at 734 North Center Street, P.O. Box 317, Duchesne, UT 84021-0317. Phone: (435) 738-1150, email: Building@duchesne.utah.gov. Office hours: Mon–Fri 8:30 AM – 5:00 PM (closed state and federal holidays); Planning & Zoning zoning-clearance line (435) 738-1135 or 1152. Official information: https://duchesne.utah.gov/gov/dept/building-inspector/.

Unincorporated Duchesne County, Utah has adopted: 2024 International Building Code (IBC), including Appendices C and J — Utah Code § 15A-2-103(1)(a); current edition as of July 1, 2026 (2021 edition governed through June 30, 2026); 2021 International Residential Code (IRC), plus Appendix AQ of the 2021 IRC — Utah Code § 15A-2-103(1)(b)/(c); unchanged by the July 1, 2026 revision — still the current edition; 2024 International Plumbing Code (IPC) — Utah Code § 15A-2-103(1)(d); current edition as of July 1, 2026 (2021 edition, including Utah amendment P2602.3 (individual water supply), governed through June 30, 2026 — confirm the amendment still applies against the 2024 base edition); 2024 International Mechanical Code (IMC) — Utah Code § 15A-2-103(1)(e); current edition as of July 1, 2026 (2021 edition governed through June 30, 2026); 2024 International Fuel Gas Code (IFGC) — Utah Code § 15A-2-103(1)(f); current edition as of July 1, 2026 (2021 edition governed through June 30, 2026); 2024 International Energy Conservation Code (IECC) — Utah Code § 15A-2-103(1)(h); current edition as of July 1, 2026 (2021 edition governed through June 30, 2026); statute has no residential/commercial split — one edition applies to both; 2024 International Existing Building Code (IEBC) — Utah Code § 15A-2-103(1)(i); current edition as of July 1, 2026 (2021 edition governed through June 30, 2026); 2024 International Swimming Pool and Spa Code (ISPSC), residential provisions — Utah Code § 15A-2-103(1)(n). ADDED 2026-07-16: this code is not listed on Duchesne County's own permit materials, but it is adopted statewide by statute, so it applies here regardless of the county page's omission.; 2023 National Electrical Code (NEC) — Utah Code § 15A-2-103(1)(g); statewide in force, unchanged by the July 1, 2026 revision; Utah State Amendment to IBC Section 1807 (Empirical Concrete Foundation Design, Table 1807.1.6.4) — Duchesne County Permit Packet, dated July 1, 2023; Utah Wildland Urban Interface Code — adopted under Utah Code § 15A-2-103; a Pre-site/WUI evaluation is a required inspection for new construction in Duchesne County; NOTE (verified 2026-07-16 against the live Utah Code § 15A-2-103 text, version headed 'Effective 7/1/2026 / Superseded 1/1/2027'): the 2024 editions of IBC, IPC, IMC, IFGC, IECC, and IEBC listed above took effect July 1, 2026, replacing the 2021 editions; IRC (2021) and NEC (2023) did not change. The 1/1/2027 version of the statute carries identical editions, so no further flip is expected then. This file previously forecast this change but still led with the 2021 editions as current — corrected on this date.. Local amendments apply — see the Unincorporated Duchesne County overview page for the full list.

No. Duchesne County Code § 8-9-14 sets sign standards (no traffic-hazard signs, none in the public right-of-way, a 50-foot height cap from roadway grade, NEC/IBC compliance, and written owner consent for off-premises signs) but does not create a standalone sign permit application or fee. Per County Code § 8-1-4, a sign is treated as construction requiring a building permit, so it is processed under whichever Building Permit type already applies to the property.

County Code § 8-9-14 caps sign height at 50 feet measured from roadway grade.

Sources & verification

Key facts verified against official sources. Last reviewed 2026-07-22.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Duchesne County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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