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Commercial Building Permit in Unincorporated Iron County, Utah

Required for new commercial construction in unincorporated Iron County, regulated by the state-adopted 2024 IBC per Utah Code § 15A-2-103. The county's own Fee Schedule (adopted May 26, 2026) publishes distinct building-valuation-per-square-foot rates by IBC occupancy classification (e.g., Business Group B $153.62/sq ft, Mercantile Group M $117.89/sq ft) and a separate, higher Building Application/Plan Review Submittal Fee for commercial projects than for a dwelling.

Verified 2026-07-20 · Source

When you need this permit

  • New commercial construction, classified by IBC occupancy group for valuation purposes
  • Structural engineered plans required for all commercial projects, per the Building & Zoning FAQ ('commercial projects require architectural, structural, plumbing, mechanical, and electrical plans')
  • Utah Prairie Dog Clearance form required (per the county's Forms index)
  • Geotechnical Form — Footing Foundation and Geotechnical Form — Backfill Final Grade, both required as distinct submittals

Required documents

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Fee schedule

Building Valuation — Assembly Group AIron County Fee Schedule, adopted May 26, 2026, Building Department, Building Occupancy Classification table.
$160.50 per sq ft
Building Valuation — Business Group BIron County Fee Schedule, adopted May 26, 2026, Building Occupancy Classification table.
$153.62 per sq ft
Building Valuation — Education Group EIron County Fee Schedule, adopted May 26, 2026, Building Occupancy Classification table.
$163.45 per sq ft
Building Valuation — Factory Group FIron County Fee Schedule, adopted May 26, 2026, Building Occupancy Classification table.
$83.65 per sq ft
Building Valuation — High Hazard Group HIron County Fee Schedule, adopted May 26, 2026, Building Occupancy Classification table.
$99.85 per sq ft
Building Valuation — Institutional Group IIron County Fee Schedule, adopted May 26, 2026, Building Occupancy Classification table.
$175.80 per sq ft
Building Valuation — Mercantile Group MIron County Fee Schedule, adopted May 26, 2026, Building Occupancy Classification table.
$117.89 per sq ft
Building Valuation — Residential Group R (Hotel/Motel, etc.)Iron County Fee Schedule, adopted May 26, 2026, Building Occupancy Classification table.
$107.40 per sq ft
Building Valuation — Storage Group SIron County Fee Schedule, adopted May 26, 2026, Building Occupancy Classification table.
$72.63 per sq ft
Building Valuation — Utility & Misc. Group UIron County Fee Schedule, adopted May 26, 2026, Building Occupancy Classification table.
$42.05 per sq ft
Building Permit Fee — scaled from valuation bracket tableIron County Fee Schedule, adopted May 26, 2026 — the occupancy-classification per-square-foot rates above set the valuation, which is then run through the same Building Permit Fee bracket table documented in this file's residential-building-permit entry.
Same bracketed scaling table used for residential (e.g., $1,027 for the first $100,000 of valuation plus $7 per additional $1,000 up to $500,000)
Building Application/Plan Review Submittal Fee (Commercial)Iron County Fee Schedule, adopted May 26, 2026, Legend note (d): 'Dwelling ($250) Commercial ($500) Other ($50).' The Commercial submittal fee is double the Dwelling rate.
$500 (non-refundable, applied to the building permit)
Plan Review FeeIron County Fee Schedule, adopted May 26, 2026, Legend note (c): 'Subject to a plan check (P.C.), electrical, plumbing, mechanical fee up to eighty-five percent (85%) of the building fee.' Same mechanism documented for the residential-building-permit entry applies to commercial.
Up to 85% of the Building Permit Fee
Utah State FeeIron County Fee Schedule, adopted May 26, 2026.
1% of the Building Permit Fee

Review timeline

Plan review
Not published — contact the department

How long did your Commercial Building Permit permit actually take in Unincorporated Iron County?

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

Inspection process

  1. 1

    Footing/Foundation

    Per Geotechnical Form — Footing Foundation submittal requirement.

  2. 2

    Backfill/Final Grade (Geotechnical)

    Second-stage geotechnical sign-off per Geotechnical Form — Backfill Final Grade.

  3. 3

    Framing / Structural

    Structural framing verified against engineer-stamped plans; specific county inspection checklist not separately published online as of 2026-07-19.

  4. 4

    Final

    Final building inspection prior to occupancy.

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

Tips

  • Iron County's Building Application/Plan Review Submittal Fee for a Commercial project is $500, double the $250 Dwelling rate and 10x the $50 'Other' rate, per the Fee Schedule's Legend note (d).
  • Iron County publishes ten distinct per-square-foot building valuation rates by IBC occupancy classification (Assembly, Business, Education, Factory, High Hazard, Institutional, Mercantile, Residential/Hotel, Storage, Utility & Misc.) — a level of granularity not published by neighboring Cedar City or unincorporated Tooele County in this corpus.
  • The same Plan Review Fee mechanism (up to 85% of the Building Permit Fee) documented for residential construction applies to commercial projects.
  • Iron County does not publish a standalone fire-sprinkler or fire-alarm permit fee. The county's Fee Schedule (adopted May 26, 2026) lists 'Fire' among the departments in its 'For Reference Only' section that 'have reported that they do not collect fees,' and the Building & Zoning department's own list of inspected trades (Building, Electrical, Plumbing, Mechanical, Fuel Gas) does not include a separate fire-suppression category. Fire sprinkler/alarm installation is expected to be reviewed as part of this Commercial Building Permit's plan review rather than as a distinct permit — confirm with the Building Official, (435) 865-5350, and the Iron County Fire Warden, (435) 590-4714, for project-specific plan review coordination.
  • No standalone Change-of-Use or Certificate-of-Occupancy-verification permit/fee is published for unincorporated Iron County. The county's Fee Schedule (adopted May 26, 2026) contains no 'occupancy' or 'change of use' line item, and the Iron County Code of Ordinances § 17.68.080 ('Change of use,' governing nonconforming uses) states only that 'a nonconforming use may only be changed to a use allowed in the zoning district in which the property is located by following the use permitting procedures as identified in this title' — i.e., an ordinary change of use follows the county's standard zoning use-permitting process rather than triggering a distinct fee or application. A use/occupancy classification change without new construction, or a CO re-verification for an existing building, is expected to be handled through this Commercial Building Permit's standard plan review under the adopted 2024 IEBC (Utah Code § 15A-2-103(1)(i)) — confirm with the Building Official, (435) 865-5350.

Frequently asked questions

Unincorporated Iron County requires a commercial building permit for: New commercial construction, classified by IBC occupancy group for valuation purposes; Structural engineered plans required for all commercial projects, per the Building & Zoning FAQ ('commercial projects require architectural, structural, plumbing, mechanical, and electrical plans'); Utah Prairie Dog Clearance form required (per the county's Forms index); Geotechnical Form — Footing Foundation and Geotechnical Form — Backfill Final Grade, both required as distinct submittals. If your project isn't listed, confirm with Iron County Building Department at (435) 865-5350 before starting work.

Per the Iron County Fee Schedule (adopted May 26, 2026), building valuation is set per square foot by IBC occupancy classification — e.g., Business Group B $153.62/sq ft, Mercantile Group M $117.89/sq ft — run through the same Building Permit Fee bracket table used for residential construction. A $500 non-refundable Commercial Building Application/Plan Review Submittal Fee applies (versus $250 for a Dwelling), plus a Plan Review Fee of up to 85% of the Building Permit Fee and the 1% Utah State Fee.

Unincorporated Iron County does not publish a plan-review timeline for this permit. Contact Iron County Building Department at (435) 865-5350 for current turnaround.

You'll need: Building Permit Application; Architectural, Structural, Plumbing, Mechanical, and Electrical Plans; Prairie Dog Clearance; Geotechnical Form — Footing Foundation; Geotechnical Form — Backfill Final Grade. See the required-documents checklist on this page for details on each.

Unincorporated Iron County requires 4 inspection(s) for a commercial building permit, in order: Footing/Foundation, Backfill/Final Grade (Geotechnical), Framing / Structural, Final. Schedule each through Iron County Building Department ((435) 865-5350).

Apply through Iron County Building Department at 82 N 100 E #102, Cedar City, UT 84720. Phone: (435) 865-5350. Office hours: Monday–Friday, 7:30 AM to 4:30 PM, per ironcountyut.gov/building. Building Official: Terry Palmer; Assistant Building Official/Zoning Officer: Nate Dennett.. Official information: https://ironcountyut.gov/building.

No standalone fire-sprinkler or fire-alarm permit or fee was found. The county's own Fee Schedule lists 'Fire' among the departments that do not collect fees, and the Building & Zoning department's published inspection trades (Building, Electrical, Plumbing, Mechanical, Fuel Gas) do not include a distinct fire-suppression line — fire sprinkler/alarm work is expected to be covered under this Commercial Building Permit's plan review.

No dedicated Change-of-Use or CO-verification permit or fee is published. Iron County Code § 17.68.080 states a nonconforming use may only change to a use allowed in the zoning district 'by following the use permitting procedures as identified in this title' — the county's ordinary zoning use-permitting process, not a distinct fee. A use/occupancy change without new construction is expected to be reviewed through this Commercial Building Permit's plan review under the adopted 2024 IEBC. Confirm with the Building Official, (435) 865-5350.

Sources & verification

Verified against official sources. Last reviewed 2026-07-20.

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

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Other permits in Unincorporated Iron County

Residential Building Permit (Single Family Dwelling, New Construction)Electrical Permit (Service Upgrade, New Meter Base)Mechanical Permit (Furnace, Gas Line/Meter, etc.)Plumbing Permit (Water Heater, etc.)Residential Solar PermitSwimming Pool PermitRemodel / Basement Finish PermitCommercial Tenant Improvement / Tenant Finish PermitSign PermitEV Charger / EVSE PermitFire Sprinkler / Fire Alarm PermitChange of Use Permit

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