Building permits in unincorporated Campbell County, Wyoming are issued by the Campbell County Public Works - Building Division, which also issues the electrical, mechanical, plumbing and small wastewater (septic) permits and inspects that work. Its office is at 500 S. Gillette Ave., Suite 1500, Gillette (307-682-1970), open Monday to Friday 8am to 5pm. One- or two-family homes outside a platted subdivision need no building permit, but still need the trade and septic permits. Gillette and Wright issue their own permits inside their limits.
This guide covers what requires a permit, how to apply through County forms / permit counter or the correct local filing path, permit fees, trade permits, contractor licensing, inspections, and Wyoming-specific review issues - so your project can move from submittal to approval with fewer correction cycles.
Confirm the authority having jurisdiction before filing. This guide is for projects in unincorporated Campbell County. The City of Gillette and the Town of Wright issue their own building permits; in Wright, electrical permits and inspections come from the state. In unincorporated Campbell County the county, not the State Fire Marshal, carries out building, fire and electrical plan review and inspection.
Campbell County projects often involve rural property construction, platted-subdivision versus rural rules, zoning certificates, commercial site plans, industrial or energy-related improvements, the county’s design loads (30 to 35 psf roof snow, 110 mph wind for most buildings, 42-inch frost depth), Campbell County Fire Department fire-code permits, state electrical licensing, and well, septic and access coordination.
Wyoming’s state-adopted codes are the 2024 International Fire, Building, Fuel Gas, Mechanical and Existing Building Codes and the 2026 National Electrical Code, applied through the State Fire Marshal’s plan review and electrical program. Cities and counties add their own building, zoning and floodplain rules, so confirm which authority has jurisdiction for Campbell County projects. Wyoming’s state codes and review
What requires a building permit in Campbell County?
Under the county’s Chapter 4 Rules Regulating Construction (amended June 2026), a permit from the Building Division is required before building, altering, moving, demolishing or changing the occupancy of a building, or installing or altering electrical, gas, mechanical, plumbing or septic systems, unless one of the rules’ exemptions applies.
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- New homes in platted subdivisions, and new commercial and industrial buildings, additions, remodels and changes of occupancy
- Structural changes, foundations, load-bearing work, decks, porches, stairs, garages, accessory buildings, and shell work
- Electrical service changes, panel work, generators, solar, EV chargers, new circuits, and most wiring
- Plumbing, water heaters, sewer and water connections, gas piping, backflow, and fixture relocations
- HVAC installations, furnace or AC replacements, ductwork, ventilation, and fuel-gas appliances
- Roofing, siding, windows, signs, pools, fences, demolition, grading, floodplain, stormwater, and right-of-way work where regulated
Typically exempt
- Painting, wallpaper, flooring, trim, cabinets, countertops, and similar finish work
- Minor repairs replacing existing materials in kind with no structural, electrical, plumbing, mechanical, or fire-code change
- No building permit for one- or two-family homes outside a platted subdivision, residential accessory structures outside a platted subdivision, HUD manufactured homes, or detached non-habitable accessory structures in a platted subdivision with a clear roof span under 61 feet and at least 7 feet from any dwelling — but electrical, plumbing, mechanical and septic permits still apply
- Buildings on parcels used only for farm or ranch operations (electrical and septic permits still apply) and buildings for oil, gas, coal or mineral extraction (septic permits still apply)
These exemptions come from Section 1.4 of the county’s Chapter 4 Rules. Confirm with the Building Division (307-682-1970) before starting work.
Get the permit before work begins. Work begun without a required permit is charged $60, the Building Code Official can stop the work, and violations can be fined $250 a day. A permit also needs a county-issued address first.
Who handles permitting in Campbell County?
The Campbell County Building Division, part of the Department of Public Works, enforces the Chapter 4 Rules in unincorporated Campbell County: it issues building, electrical, mechanical, plumbing and small wastewater permits and inspects that work, and publishes the Building Permit & Zoning Certificate Application, checklists and site-plan guidance. For zoned parcels the Planning and Zoning Division must approve a zoning certificate before a permit is issued. Fire code permits come from the Campbell County Fire Department. City limits should be checked before filing with the county.
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Get a free quote →| Detail | Information |
|---|---|
| Primary authority | Campbell County Public Works - Building Division |
| Office | 500 S. Gillette Ave., Suite 1500, Gillette, WY 82716 · 307-682-1970 · Monday to Friday 8am to 5pm |
| Apply | Campbell County Building Division applications, checklists, and permit process |
| State / local code basis | Chapter 4 Rules Regulating Construction (amended June 2026, under W.S. 35-9-121): the 2024 IBC, IRC, IPC, IFGC, IMC, IEBC, IFC and IPMC and the 2026 National Electrical Code, with county amendments |
| Common overlays | Zoning certificate for zoned parcels, county address, floodplain, small wastewater, State Engineer well permit or shared well agreement, driveway culverts, and Campbell County Fire Department fire code permits |
| Contractor credentials | Local contractor license or registration where required, Wyoming electrical license where applicable, plumbing/mechanical/fire/specialty credentials, bonds, insurance, and separate trade permits where required |
Apply through the correct local path. Use the official resources listed below or the permit instructions published by Campbell County Public Works - Building Division. Submit plans, respond to comments, pay fees, and schedule inspections before covering work.
Campbell County building permit cost
Most Campbell County permits are free. Under Section 1.8 of the Chapter 4 Rules, only commercial building permits, extra commercial plan reviews and re-inspections carry a fee, and every other permit is free.
| Fee component | How it works |
|---|---|
| Residential building permit | No fee; a certificate of occupancy is also free |
| Commercial building permit | $250 for new construction that needs a commercial building permit |
| State / local plan review | Commercial plan review by the county: the first review and first re-review are free, each further re-review $250 |
| Trade permits | Electrical, mechanical, plumbing and small wastewater permits: no fee |
| Zoning / access / utilities | Planning and Zoning Division applications, such as subdivisions, have their own fee schedule; county septic permits are free |
| Re-inspections / revisions | Commercial work: first two inspections of each type free, then $60 per re-inspection, paid in person; $60 for work begun before a required permit |
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Call 1-855-478-4290 →Need a precise number for a specific Campbell County project? Send us the scope, address, and valuation and we can help estimate the filing path, likely reviews, and permit fee categories.
Campbell County trade permits
The Building Division issues separate electrical, mechanical, plumbing and small wastewater permits, and they are required even where no building permit is, such as for a home outside a platted subdivision. Either the owner or the contractor may pull them. Electricians still need a state licence.
Electrical permits
In unincorporated Campbell County, electrical permits are issued and inspected by the county Building Division under the 2026 National Electrical Code, as amended by the county (for example, the service disconnect must be within 50 feet and in plain view from outside the building). Electrical contractors on farm or ranch operations still need a county electrical permit.
Plumbing & gas permits
Required for new plumbing, fixture relocations, water heaters, water service connections, gas piping and fuel-gas appliances. Septic systems need a county small wastewater permit; systems over 2,000 gallons a day or with non-domestic sewage are permitted by the Wyoming DEQ.
Mechanical / HVAC permits
Required for furnaces, boilers, AC units, heat pumps, ductwork, commercial kitchen hoods, ventilation, combustion air, exhaust, and major equipment replacements where the local code requires mechanical permits.
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Get a free quote →Fire, occupancy, and specialty permits
In unincorporated Campbell County, commercial plan review is done by the county Building Division rather than the State Fire Marshal, and a site plan review meeting may be required for public, commercial or industrial buildings. Operational and construction permits under the International Fire Code are issued by the Campbell County Fire Department.
Wyoming has no state general-contractor licence, so contractor licensing is local. Electricians and electrical contractors are licensed by the state, and electrical work is permitted and inspected by the state unless the city or county has taken on electrical enforcement itself. Plumbing, mechanical and specialty credentials depend on the local jurisdiction. Contractor and electrical licensing in Wyoming
How to get a building permit in Campbell County
Confirm jurisdiction & zoning
Check whether the parcel is inside Gillette or Wright, whether it is in a platted subdivision or a zoning district, its floodplain status, and whether it has a county address and a water source (well permit, shared well agreement or water system).
Prepare your application package
Assemble the permit form, site plan, construction drawings, valuation, scope, local contractor licenses, Wyoming electrical license information, energy documentation, engineering details, and any zoning or fire forms.
Submit application & plans
Submit the Building Permit & Zoning Certificate Application, site plan and plans to the Building Division at 500 S. Gillette Ave., Suite 1500. The county processes complete applications in a few days and reserves up to 10 days in busy seasons.
Plan review & corrections
Staff reviews for local code compliance plus zoning, fire, floodplain, access, public works, stormwater, erosion, accessibility, energy, and local development standards. Respond quickly to correction comments.
Pay fees & receive permit
Pay any fee that applies (most county permits are free), and keep the jobsite card listing the required inspections and the approved plans on site.
Schedule inspections
Call 307-682-1970 at least 24 hours ahead. A typical home has seven inspections: footing; stemwall; service utilities; rough-in framing, electrical, plumbing and HVAC; drywall; septic; and final. Address numbers must be posted first.
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Every new home in a platted subdivision must get a certificate of occupancy through the county’s free permit and inspection process. Outside a platted subdivision only the septic system and the electrical, plumbing and mechanical work are inspected, unless the owner opts for full building inspections, which lead to a free certificate of occupancy; lenders often ask for one. Work covered before inspection must be exposed.
Do not cover work before the required inspection is approved. Keep the issued permit, approved plans, energy documentation, product approvals, contractor license information, trade license information, and correction responses available on site.
Official Campbell County permitting resources
- 🏢 Campbell County Building Division
- 🏢 Campbell County Public Works
- 🏢 Campbell County official website
- 🏢 City of Gillette Development Services
- 📄 Wyoming State Fire Marshal - plan review
- 📄 Wyoming State Fire Marshal - adopted codes and rules
- 📄 Wyoming electrical safety permits and licensing
- 📄 Wyoming electrical licensing
- 📄 Wyoming wiring permits
- 📄 Wyoming State Fire Marshal Office
Inspections are where schedules slip.
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Alliance Permitting is a permit documentation and submission company: we prepare your paperwork, file it correctly, and coordinate with the building department through issuance. We are not a contractor and do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.
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More Wyoming permitting guides
This guide is provided by Alliance Permitting for general informational purposes and reflects publicly available information believed accurate as of June 2026. Permit requirements, fees, codes, portals, contractor licensing, and review timelines change; always confirm current details with the local permit authority before filing. This is not legal advice.