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Zoning/Construction Permit (Land Use) — not a building-code permit in Unincorporated Sweetwater County, Wyoming

Sweetwater County does not issue a code-enforcement building permit for private construction. Instead, the county's Land Use Department requires an approved ZONING permit before any residential, commercial, industrial, or mineral construction/use begins in the unincorporated county — most projects use the 'Construction' application (which also covers oil & gas well permitting). This is a land-use/zoning approval, not an IBC/IRC building-code plan review or inspection program.

Verified 2026-08-01 · Source

When you need this permit

  • Confirm zoning district and any Growth Management Plan overlay requirements (Rock Springs/Green River growth-area) before applying
  • Submit the 'Construction' application form (covers residential and non-residential construction, including oil & gas wells) available from the Land Use Office
  • Submit an Address application if establishing a new address is also needed
  • Apply BEFORE construction begins — the county assesses a Late Application Fee for construction started without an approved permit application
  • Commercial/industrial projects that involve multiple-family structures, a structure with 20,000+ sq ft of gross floor area, 50,000+ sq ft of exterior storage of material or goods, or parking for 150+ motor vehicles additionally go through the Major Site Plan process (2015 Zoning Resolution Section 10; separate 'Major Site Plan' application form), available in the R-3, CRS, B, C, I-1, and I-2 districts — with expanded site-plan content (traffic circulation, access plans, landscaping/screening of adjacent residential areas) and a possible traffic study depending on use
  • Contact the Land Use Office (307-872-3914 or 922-5430) if unsure which application applies to your project

Required documents

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Fee schedule

Zoning Permit — Residential (RR, R-1, R-2, R-2/SF, R-3, MH districts and residential uses/structures in A district)2015 Zoning Resolution Amended 2/18/25, Section H.I.1 — confirmed by direct PDF text extraction of the county's own published Zoning Resolution, 2026-08-01
$50.00
Permitted Use Structures — Non-Residential (commercial/industrial primary structures)2015 Zoning Resolution Amended 2/18/25, Section H.L.1 — this is the commercial/industrial fee tier for the SAME Construction application; there is no separate commercial application or permit type. Confirmed by direct PDF text extraction, 2026-08-01
$1,500.00
Accessory Use Structures — Non-Residential2015 Zoning Resolution Amended 2/18/25, Section H.L.2 — accessory structures on non-residential (commercial/industrial/agricultural) zoned property. Confirmed by direct PDF text extraction, 2026-08-01
$500.00
Late Application Fee — Residential / Non-Residential2015 Zoning Resolution Amended 2/18/25, Section H — assessed in addition to the application fee if construction begins before a permit application is submitted or approved
$500.00 / $1,000.00

Review timeline

Plan reviewTypical estimate — confirm current times with the Unincorporated Sweetwater County building department
~5–20 business days

How long did your Zoning/Construction Permit (Land Use) — not a building-code permit permit actually take in Unincorporated Sweetwater County?

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Inspection process

    Tips

    • There is NO county building-code permit (no IBC/IRC plan review or inspection program) in unincorporated Sweetwater County — confirm this before assuming code-based inspections apply.
    • The zoning/construction permit is a land-use approval, not a life-safety code inspection; it does not substitute for the state electrical wiring permit or the county septic/access approvals below.
    • A Late Application Fee applies if construction starts before the zoning/construction application is approved.
    • COMMERCIAL/INDUSTRIAL projects: this same permit IS the county's commercial construction authorization — the county's Application Forms page (re-fetched 2026-08-01) lists one unified 'Construction' application 'for residential and non-residential construction,' with no separate commercial form; the difference is the fee tier ($1,500 Permitted Use Structures / $500 Accessory Use Structures in non-residential districts, vs $50 residential) and, for large projects, the Major Site Plan overlay (Section 10 triggers: 20,000+ sq ft gross floor area, 50,000+ sq ft exterior storage, 150+ parking spaces, or multiple-family structures).
    • The effective code-review gate for commercial/public buildings here is the STATE, not the county: Sweetwater County's Building Plan Review is held by the Wyoming State Fire Marshal (WSFM chart: Bldg Insp S / Bldg PR S), so buildings subject to W.S. 35-9-108 plan review (public buildings, multistory public buildings, childcare centers over 10 children, public bars/restaurants/theaters/churches/meeting places) must submit plans to WSFM and receive a state Certificate of Occupancy before use — see this file's fire-sprinkler-alarm-permit entry for the WSFM plan-review process, timeline, and fees. The county zoning permit does not substitute for that state review.

    Frequently asked questions

    No. Sweetwater County has not adopted a countywide building code or taken building-code enforcement authority under W.S. 35-9-121, so there is no county building permit with IBC/IRC plan review. You DO need the county's zoning 'Construction' permit from the Land Use Department before starting construction, plus any applicable state electrical permit, septic permit, and driveway/access permit (see below).

    In Unincorporated Sweetwater County, the published Zoning Permit — Residential (RR, R-1, R-2, R-2/SF, R-3, MH districts and residential uses/structures in A district) is: $50.00. Additional published fees: Permitted Use Structures — Non-Residential (commercial/industrial primary structures) — $1,500.00; Accessory Use Structures — Non-Residential — $500.00; Late Application Fee — Residential / Non-Residential — $500.00 / $1,000.00. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

    Plan review for a zoning/construction permit (land use) — not a building-code permit in Unincorporated Sweetwater County typically runs 5–20 business days. This is an estimate, not a published figure — confirm current review times with Sweetwater County Land Use Department (Planning & Zoning) at (307) 872-3914.

    You'll need: Construction & Address Permit Application; Site plan. See the required-documents checklist on this page for details on each.

    Apply through Sweetwater County Land Use Department (Planning & Zoning) at 80 W. Flaming Gorge Way, Suite 23, Green River, WY 82935. Phone: (307) 872-3914, email: binghame@sweetwatercountywy.gov. Office hours: Monday - Friday, 8:00 am - 5:00 pm. Official information: https://www.sweetwatercountywy.gov/departments/land_use/index.php.

    Unincorporated Sweetwater County, Wyoming has adopted: No countywide building code and no county building permit for private construction. Sweetwater County has not taken delegated building-code enforcement authority under Wyoming Statute 35-9-121; the Wyoming Dept. of Fire Prevention & Electrical Safety's "Local and State Jurisdictions" chart lists Sweetwater County BLDG INSP/PR as state (S/S), meaning the State Fire Marshal, not the county, holds building-code jurisdiction (https://wsfm.wyo.gov/electrical-safety, chart updated 7/7/2026, re-verified 2026-07-16 — Sweetwater County row still reads Fire Insp L / Fire PR S / Bldg Insp S / Bldg PR S / Elec Insp S / Elec PR S; Rock Springs (L across the board) and Green River (Bldg Insp L, all else S) are separate incorporated-city rows and do not apply to this unincorporated-county file).; Confirmed independently on the county's own site: the Land Use Department's page states construction in unincorporated Sweetwater County requires an approved ZONING permit (not an IBC/IRC building-code permit) — 'All residential, commercial, industrial and mineral construction and use in the unincorporated areas of Sweetwater County requires an approved zoning permit' (https://www.sweetwatercountywy.gov/departments/land_use/index.php).; The county's own Development Codes page lists only land-use/zoning instruments — the 2015 Zoning Resolution, Growth Management Plan, Subdivision Regulations, Comprehensive Plan, and Federal Lands and Resources Plan — with no adopted IBC/IRC/NEC building-code edition (https://www.sweetwatercountywy.gov/departments/land_use/development_codes.php)..

    No. The county's own Land Use page states 'All residential, commercial, industrial and mineral construction and use in the unincorporated areas of Sweetwater County requires an approved zoning permit,' and its Application Forms page lists a single 'Construction' application covering residential and non-residential construction (including oil & gas wells). Commercial projects use that same application at the non-residential fee tier ($1,500 for a permitted-use structure, $500 for an accessory structure). Large commercial/industrial projects (20,000+ sq ft floor area, 50,000+ sq ft exterior storage, 150+ parking spaces, or multi-family) additionally require Major Site Plan approval under Section 10 of the Zoning Resolution. Code-based plan review for qualifying public/commercial buildings is a separate Wyoming State Fire Marshal process under W.S. 35-9-108 (see fire-sprinkler-alarm-permit).

    Sources & verification

    Verified against official sources. Last reviewed 2026-08-01.

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

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