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Commercial Tenant Improvement / Tenant Finish Permit in Unincorporated Carbon County, Utah

Required for interior tenant-improvement and tenant-finish work within existing commercial space on unincorporated Carbon County land. Carbon County does not publish a fee category or checklist distinct from new commercial construction — the same Commercial and Industrial Structures checklist and unconditional engineered-plan requirement apply, scoped to the actual work performed.

Reviewed 2026-07-19 · Source

When you need this permit

  • Interior tenant-improvement or tenant-finish work inside existing commercial space on unincorporated county land
  • Completed and signed Building Permit Application with contractor name(s) and license number(s)
  • Engineered WET-stamped plans for any structural, electrical, plumbing, or mechanical work involved in the tenant finish, sealed by a Utah-registered Architect or Professional Engineer in the relevant discipline
  • Fire sprinkler system plans, if the tenant improvement affects or requires fire suppression coverage

Required documents

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Fee schedule

Filing fee
Not published — contact the department

Review timeline

Plan reviewUnincorporated Carbon County’s published plan-review target
0–21 business days

How long did your Commercial Tenant Improvement / Tenant Finish Permit permit actually take in Unincorporated Carbon County?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Rough 4-Way

    Rough electrical, plumbing, and mechanical as applicable to the tenant-improvement scope, before wall closure.

  2. 2

    Final Inspection

    Completed work verified before reoccupancy. Call at least 24-72 hours in advance at (435) 636-3260.

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

Tips

  • No dollar-amount fee table for tenant improvements is published on carbon.utah.gov — contact the Building Department at (435) 636-3260 for a project-specific quote.
  • Even an interior-only tenant finish that changes structural, electrical, plumbing, or mechanical systems requires stamped engineering from a Utah-registered Architect or Professional Engineer per discipline.
  • No dedicated 'Change of Use' or 'Certificate of Occupancy' permit distinct from this Building Permit was found on carbon.utah.gov as of a direct check on 2026-07-20 — but a related, genuinely distinct step exists for a new or changing business at an existing location: the county's Planning & Zoning page states 'For Business License Zoning Approval, all business license applications must get zoning approval by the Planning & Zoning Director. Visit Suite 2600 to obtain approval, make sure to bring your business license application.' This is a real zoning-level compliance check tied to occupancy of a location (matching what a change-of-use review would cover for a tenant with no construction scope), but it rides on the same Business License Application form and fee ($100/year full-time, $50/year part-time, per the Business License page) rather than having its own separate fee, application, or timeline — so it is noted here rather than seeded as its own permit entry. UPDATE 2026-07-22: this gap was subsequently seeded as its own permit entry — see this file's dedicated change-of-use-permit entry.

Frequently asked questions

Unincorporated Carbon County requires a commercial tenant improvement / tenant finish permit for: Interior tenant-improvement or tenant-finish work inside existing commercial space on unincorporated county land; Completed and signed Building Permit Application with contractor name(s) and license number(s); Engineered WET-stamped plans for any structural, electrical, plumbing, or mechanical work involved in the tenant finish, sealed by a Utah-registered Architect or Professional Engineer in the relevant discipline; Fire sprinkler system plans, if the tenant improvement affects or requires fire suppression coverage. If your project isn't listed, confirm with Carbon County Building & Planning Department (Building Division) — serves unincorporated Carbon County directly, plus all incorporated cities/towns in the county at (435) 636-3260 (Building Division main line / Administrative Assistant); (435) 636-3261 (Director of Building & Planning) before starting work.

Unincorporated Carbon County's published plan-review target for a commercial tenant improvement / tenant finish permit is 0–21 business days.

You'll need: Commercial and Industrial Structures Building Permit Information (checklist). See the required-documents checklist on this page for details on each.

Unincorporated Carbon County requires 2 inspection(s) for a commercial tenant improvement / tenant finish permit, in order: Rough 4-Way, Final Inspection. Schedule each through Carbon County Building & Planning Department (Building Division) — serves unincorporated Carbon County directly, plus all incorporated cities/towns in the county ((435) 636-3260 (Building Division main line / Administrative Assistant); (435) 636-3261 (Director of Building & Planning)).

Apply through Carbon County Building & Planning Department (Building Division) — serves unincorporated Carbon County directly, plus all incorporated cities/towns in the county at 751 East 100 North, Suite 2600, Price, UT 84501. Phone: (435) 636-3260 (Building Division main line / Administrative Assistant); (435) 636-3261 (Director of Building & Planning), email: planning@carbon.utah.gov. Office hours: Mon–Thu 8:00 AM – 5:00 PM, Fri 8:00 AM – 3:00 PM (Building Department-specific hours per the county's own Building Permits FAQ; distinct from general County Administration hours of Mon–Fri 8:00 AM – 5:00 PM). Official information: https://www.carbon.utah.gov/service/building-permits/.

Unincorporated Carbon County, Utah has adopted: 2024 International Building Code (IBC), including Appendices C and J — governs per Utah Code §15A-2-103(1)(a) (https://le.utah.gov/xcode/Title15A/Chapter2/15A-2-S103.html), in force statewide since 7/1/2026 and binding on counties under §15A-1-204. Carbon County's own Building Permits page 'What codes are enforced?' FAQ still lists the 2021 IBC with Appendix J only (no Appendix C) — live-checked 2026-07-16, the county's own page has not been updated to the current statewide edition.; 2021 International Residential Code (IRC), including Appendix AQ (the FAQ labels it 'Appendix Q') — governs per Utah Code §15A-2-103(1)(b)/(c); this edition is UNCHANGED from the prior code cycle. Carbon County's own FAQ lists the 2021 IRC with Appendix Q — live-checked 2026-07-16, consistent with the current statute on the base edition.; 2024 International Plumbing Code (IPC) — governs per Utah Code §15A-2-103(1)(d). Carbon County's own FAQ still lists the 2021 IPC — live-checked 2026-07-16, lags the current statewide edition.; 2024 International Mechanical Code (IMC) — governs per Utah Code §15A-2-103(1)(e). Carbon County's own FAQ still lists the 2021 IMC — live-checked 2026-07-16, lags the current statewide edition.; 2024 International Fuel Gas Code (IFGC) — governs per Utah Code §15A-2-103(1)(f). Carbon County's own FAQ still lists the 2021 IFGC — live-checked 2026-07-16, lags the current statewide edition.; 2023 National Electrical Code (NEC) — governs per Utah Code §15A-2-103(1)(g); this edition is UNCHANGED from the prior code cycle. Carbon County's own FAQ lists the 2020 NEC — live-checked 2026-07-16, one cycle behind the current statewide edition; confirmed directly against the county's own published FAQ rather than assumed uniform statewide.; 2024 International Energy Conservation Code (IECC), one code with no residential/commercial split — governs per Utah Code §15A-2-103(1)(h). Carbon County's own Building Permits FAQ does not list any IECC edition at all — live-checked 2026-07-16; added here per the statute, not omitted.; 2024 International Existing Building Code (IEBC), subject to Utah Code §15A-2-104(2) (the HUD Code) — governs statewide per Utah Code §15A-2-103(1)(i)/(j). Not listed on Carbon County's own Building Permits FAQ — live-checked 2026-07-16.; Residential provisions of the 2024 International Swimming Pool and Spa Code (ISPSC) — governs statewide per Utah Code §15A-2-103(1)(n). Not listed on Carbon County's own Building Permits FAQ — live-checked 2026-07-16.; Modular Building Institute (MBI) Standards 1200 and 1205 — governs statewide per Utah Code §15A-2-103(1)(o). Not listed on Carbon County's own Building Permits FAQ — live-checked 2026-07-16.. Local amendments apply — see the Unincorporated Carbon County overview page for the full list.

No — the same Commercial and Industrial Structures checklist used for new commercial construction applies to tenant-improvement work, and reviews can take up to 21 business days once all required documents are received.

Sources & verification

Key facts verified against official sources. Last reviewed 2026-07-19.

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 Carbon County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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Commercial Tenant Improvement / Tenant Finish Permit in other cities

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