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Residential Building Permit (New Construction) in Unincorporated Campbell County, Wyoming

Required for new single-family and two-family dwellings located INSIDE a Platted Subdivision in unincorporated Campbell County, governed by the 2024 IRC per Chapter 4 Section 4. Building Permits are NOT required for one- or two-family dwellings built OUTSIDE a platted subdivision (Chapter 4 Section 1.4.A.3) — see 'Building a Home on Rural Property' guidance — though electrical, mechanical, plumbing, and septic permits still apply in that case.

Verified 2026-07-01 · Source

When you need this permit

  • Inside a platted subdivision: Building Permit required; outside a platted subdivision: Building Permit is EXEMPT (Chapter 4 § 1.4.A.3), but electrical/mechanical/plumbing/septic permits are still required
  • Completed Building Permit & Zoning Certificate Application
  • Site plan drawn to scale showing setbacks, easements, septic tank/leach field, water/electric service lines, and (for new construction outside a subdivision) driveway mileage to access point
  • Verification of potable water source: on-lot well permit (WY State Engineer's Office), Shared Well Agreement (signed, notarized, recorded) plus well permit, or Centralized Water System connection letter
  • Approved Small Wastewater System (septic) permit if not on public sewer
  • Zoning Certificate (no fee) approved prior to permit issuance for zoned parcels
  • Inside a platted subdivision: two 24”x36” sets of building plans, plus foundation plans prepared by a Wyoming-licensed Professional Engineer with a soils report
  • Valid Campbell County-issued address posted before any inspection will be performed
  • Wyoming 811 (One Call) contacted prior to excavation

Required documents

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Fee schedule

Residential Building PermitCampbell County Chapter 4 Rules Regulating Construction, Section 1.8.E 'All Other Permits: No fees.' (Amended June 2026) — applies to one- and two-family residential building permits; only Commercial Building Permits carry the $250 fee under Section 1.8.A.
No fee
Zoning CertificateChapter 7 Zoning Regulations, Section 10.25(7)(a)(i)
No fee
Work commenced before obtaining required permitChapter 4 Section 1.8.D
$60.00

Review timeline

Plan reviewUnincorporated Campbell County’s published plan-review target
3–10 business days

How long did your Residential Building Permit (New Construction) permit actually take in Unincorporated Campbell County?

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

Inspection process

  1. 1

    Footing

    Before concrete pour

  2. 2

    Stemwall

    Foundation stemwall inspection

  3. 3

    Service Utility Lines

    Water, gas, sewer service connections

  4. 4

    Rough-In (framing, electric, plumbing, HVAC)

    After framing and MEP rough-in, before drywall

  5. 5

    Drywall

    Before finishing

  6. 6

    Small Wastewater System (Septic/Leach field)

    Tank, pipe, chambers, and rock left exposed for inspection

  7. 7

    Final

    All work complete; required for Certificate of Occupancy

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

Tips

  • If you are building a one- or two-family home OUTSIDE a platted subdivision (rural/acreage property), you do NOT need a Building Permit at all under Chapter 4 § 1.4.A.3 — but you still need electrical, mechanical, plumbing, and septic permits, and you can still opt in to full building inspections to receive a Certificate of Occupancy (useful for lender/mortgage purposes).
  • There is NO fee for a Certificate of Occupancy in Campbell County, but construction must be compliant with the county's adopted codes.
  • A jobsite card is issued listing every required inspection — work covered without inspection must be exposed again for inspection.
  • Call (307) 682-1970 at least 24 hours in advance to schedule inspections; appointments are honored on a first-come, first-served basis.
  • Campbell County provides two free address plates and two free sets of numbers — install immediately, as inspections will not proceed until the address is posted.

Frequently asked questions

No building permit is required for a one- or two-family dwelling located outside a platted subdivision, per Chapter 4 Rules Regulating Construction § 1.4.A.3. However, you still need electrical, mechanical, plumbing, and Small Wastewater System (septic) permits, a completed Building Permit & Zoning Certificate Application for zoning/addressing purposes, an approved site plan, and proof of your water source.

There is no fee. Per Chapter 4 Section 1.8.E ('All Other Permits'), residential building, electrical, mechanical, plumbing, and small wastewater system permits are issued at no charge. Only Commercial Building Permits carry a $250 fee.

Unincorporated Campbell County's published plan-review target for a residential building permit (new construction) is 3–10 business days.

You'll need: Building Permit & Zoning Certificate Application; Site Plan; Water Well Permit or Shared Well Agreement. Depending on your project, Unincorporated Campbell County may also ask for: Foundation Plans and Soils Report (platted subdivisions). See the required-documents checklist on this page for details on each.

Unincorporated Campbell County requires 7 inspection(s) for a residential building permit (new construction), in order: Footing, Stemwall, Service Utility Lines, Rough-In (framing, electric, plumbing, HVAC), Drywall, Small Wastewater System (Septic/Leach field), Final. Schedule each through Campbell County Department of Public Works — Building, Planning & Zoning Division ((307) 682-1970).

Apply through Campbell County Department of Public Works — Building, Planning & Zoning Division at 500 S. Gillette Ave., Suite 1500, Gillette, WY 82716. Phone: (307) 682-1970, email: septic@campbellcountywy.gov (Small Wastewater System applications); planning@campbellcountywy.gov (Planning & Zoning); general Public Works (307) 685-8061. Office hours: Mon–Fri, 8:00 a.m.–5:00 p.m.. Official information: https://www.ccgov.net/286/Building-Division.

Unincorporated Campbell County, Wyoming has adopted: 2024 International Building Code (IBC) — including Appendices C and J, adopted by Campbell County Chapter 4 Rules Regulating Construction, Section 3 (Amended June 2026); 2024 International Residential Code (IRC) — including Appendices A, B, C and E, adopted Chapter 4 Section 4 (Amended June 2026); 2024 International Mechanical Code (IMC) — including Appendix A, adopted Chapter 4 Section 5; 2024 International Plumbing Code (IPC) — including Appendices A and B, adopted Chapter 4 Section 6 — NOTE: Campbell County uses the IPC, not the Uniform Plumbing Code; 2024 International Fuel Gas Code (IFGC) — all appendices, adopted Chapter 4 Section 7; 2024 International Fire Code (IFC), adopted Chapter 4 Section 8 (enforced by Campbell County Fire Department for Fire Code permits); 2024 International Existing Building Code (IEBC), adopted Chapter 4 Section 9; National Electrical Code (NFPA 70), 2026 Edition — including Informative Annex H, adopted Chapter 4 Section 10; Liquefied Petroleum Gas Code (NFPA 58), 2020 Edition, adopted Chapter 4 Section 11; Wyoming DEQ Water Quality Rules and Regulations Chapter 25 (Septic Tanks, Soil Absorption Systems, and Other Small Wastewater Systems) — adopted as Chapter 4 Appendix 1, administered by Campbell County under delegated authority from Wyoming DEQ (W.S. 35-11-304). Local amendments apply — see the Unincorporated Campbell County overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-07-01.

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

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