Building Permit (Commercial New Construction, Additions, Remodels & Tenant Improvements) in Unincorporated Sheridan County, Wyoming

Unincorporated Sheridan County requires a building permit (commercial new construction, additions, remodels & tenant improvements) for: Required for construction of any building or structure valued over $5,000, per Article III, Sec. 1 of Building Standards, Sheridan County, Wyoming (County Clerk doc. #2023-785780) — applies to commercial and residential construction alike within the mapped Building Standards Area, qualifying pre-December 5, 2006 subdivisions the county already permits, all subdivisions approved after that date, and Conditional Use Permit structures; Reviewed under the 2021 International Building Code, adopted in whole by Article II, Sec. 1 of the same ordinance, together with the 2021 International Residential, Mechanical, Fuel Gas, and Plumbing Codes, the 2022 National Electrical Code, and the 2021 International Fire Code, except where Article IV County Amendments specifically modify a section; Plans for a structure intended for business, commercial, or industrial use must be designed, drawn, and certified as code-compliant by an engineer and/or architect licensed in the State of Wyoming, per the Building & Zoning Permit Plan Submittal Requirements (rev. 5/1/2026); this certification is not required of ordinary residential plans; Building valuation and the permit fee are set from the same valuation-banded table used for residential construction — no separate commercial fee tier exists — per the Sheridan County Land Use Fee Schedule (adopted June 6, 2023); A plan review fee is charged in addition to the building permit fee, set at 47 percent of the building permit fee per the Land Use Fee Schedule (adopted June 6, 2023) — within the up-to-67-percent ceiling Article IV sets for the amended 2021 IBC Section 109.3; Farms and ranches on 40 or more deeded acres, county hospitals, mines and oilfield/refinery facilities, and railway buildings are exempt from these codes even within the mapped area, per Article I, Sec. 3(b); Sheridan County conducts no fire-district or county fire plan review for a commercial building permit; a project meeting Wyoming State Fire Marshal thresholds under W.S. § 35-9-108 — a building over 5,000 square feet with public access, a place of assembly of any size, a school, a government building, a child care center for more than 10 children, a multi-story building, or a $40,000-or-more alteration of any of these — additionally needs a Wyoming State Fire Marshal fire/life-safety plan review and state Permit to Construct before work begins, whether or not the parcel is within the mapped Building Standards Area; Outside the mapped Building Standards Area, outside the qualifying subdivisions, and absent a Conditional Use Permit, the county issues no structural building permit for commercial construction; the project instead needs the countywide Zoning Permit and, where the Wyoming State Fire Marshal thresholds above are met, the state plan review and Permit to Construct; Enforced by the Sheridan County Building Official; the Building & Zoning Permit form itself states occupancy is not allowed until final inspection and a Certificate of Occupancy are issued. If your project isn't listed, confirm with Sheridan County Public Works Department (Planning / Building Official) at (307) 674-2920 or (307) 675-2420 before starting work.

The same valuation-based table used for residential construction applies: $69.00 for the first $2,000 of valuation plus $11.00 per additional $1,000 up to $40,000, rising through higher tiers to $18,327.00 plus $1.00 per additional $1,000 above $5,000,000. A plan review fee of 47% of the building permit fee is charged in addition, per the Sheridan County Land Use Fee Schedule (adopted June 6, 2023).

Unincorporated Sheridan County's published plan-review target for a building permit (commercial new construction, additions, remodels & tenant improvements) is 10–30 business days.

You'll need: Sheridan County Building & Zoning Permit; Building & Zoning Permit Plan Submittal Requirements (rev. 5/1/2026); Building Code Enforcement Area Map (Appendix A Planning Map). See the required-documents checklist on this page for details on each.

Unincorporated Sheridan County requires 1 inspection(s) for a building permit (commercial new construction, additions, remodels & tenant improvements), in order: Final Inspection / Certificate of Occupancy. Schedule each through Sheridan County Public Works Department (Planning / Building Official) ((307) 674-2920 or (307) 675-2420).

Apply through Sheridan County Public Works Department (Planning / Building Official) at 224 South Main Street, Suite 428, Sheridan, WY 82801. Phone: (307) 674-2920 or (307) 675-2420, email: publicworks@sheridancountywy.gov. Office hours: Mon–Fri 8:00am–5:00pm (Sheridan County general office hours per the sheridancountywy.gov site footer; not separately published as Public-Works-specific hours). Official information: https://www.sheridancountywy.gov/departments/planning/building_in_the_county/index.php.

No. Where a Sheridan County structural building permit applies at all — within the mapped Building Standards Area, certain legacy or post-2006 subdivisions, or a Conditional Use Permit structure — commercial construction uses the same Building & Zoning Permit and the same valuation-based fee table as residential construction, per the Sheridan County Land Use Fee Schedule (adopted June 6, 2023) and Building Standards, Sheridan County, Wyoming. Commercial plans must additionally be designed and certified by a Wyoming-licensed engineer or architect.

Not from Sheridan County or a local rural fire district — neither administers building plan review. A project meeting Wyoming State Fire Marshal thresholds under W.S. § 35-9-108 (public-access buildings over 5,000 square feet, places of assembly, schools, government buildings, larger child care centers, multi-story buildings, or substantial alterations of these) needs a separate state fire/life-safety plan review and Permit to Construct, regardless of where the parcel sits relative to the county's mapped Building Standards Area.