Gillette building permits

Building department

Address

City Hall, 201 E. 5th St., 2nd Floor, Gillette, WY 82716

Phone

(307) 686-5260

Email

Not published on city site — use "Send an E-mail" contact form on the Building Division page or main line gillette@gillettewy.gov

Office hours

Mon–Fri (contact department for current hours); permits/plans/licenses/inspections managed via EnerGov Self Service online portal (registration required)

Website

Official site

Permit portal

Apply online at Gillette's portal

Inspection guide

See how inspections work in Gillette — sequence, scheduling & re-inspection fees.

Codes adopted

Wyoming has no statewide-mandated building code for general private construction. Under Wyoming Statute § 35-9-106, the Council on Fire Prevention and Electrical Safety in Buildings adopts minimum fire, building, mechanical, existing-building, and fuel-gas standards (not exceeding the International Codes), but § 35-9-121 makes local enforcement an opt-in delegation: a municipality or county must apply to the State Fire Marshal for local enforcement authority and adopt, by ordinance or resolution, standards equivalent to or more stringent than the state's — otherwise no local building code applies at all. In practice this produces exactly the fragmented picture that describes most of the state: some cities and counties (e.g., Laramie County, Natrona County) have adopted and enforce their own building codes, while many unincorporated county areas genuinely require no building permit for general construction. Electrical is different: under § 35-9-119(a)(i), the Chief Electrical Inspector (Wyoming State Fire Marshal's Office, Department of Fire Prevention and Electrical Safety) enforces the National Electrical Code statewide by default, EXCEPT in localities that have been separately granted their own certified electrical-enforcement authority under § 35-9-121(a) — so electrical permitting may be issued by the state program or by the local jurisdiction depending on which one currently holds delegated authority. Always confirm both the current building-code adoption status (if any) and which entity — state or local — issues the electrical permit with the specific jurisdiction before submitting plans.

• International Building Code (IBC), 2021 Edition — including Appendix C, adopted by City of Gillette Code Chapter 5, Article I § 5-I-2 (Revised 6-16-2026). CHANGED 2026-07-16 audit: the live § 5-I-2.A text now reads "2021 Edition, including Appendix C" and no longer cites Ord. 4052 (12-17-2024), which had adopted the 2024 IBC edition with Appendices C and H per the source PDF as of the prior 2026-07-01 verification; the 2024-edition adoption no longer appears in the current ordinance text.
• International Residential Code (IRC), 2021 Edition — including Appendices AA, AB, AC, AE, AN, AQ, and AW (AW 3D Printed Construction), adopted § 5-I-3 (Revised 6-16-2026). CHANGED 2026-07-16 audit: the live § 5-I-3.A text now reads "2021 Edition" with this different appendix set (previously 2024 Edition, Appendices CA, CB, BA, CE, BB, BM per Ord. 4052, 12-17-2024, which no longer appears in the current ordinance text).
• International Plumbing Code (IPC), 2021 Edition — including Appendices B, D, E, adopted § 5-I-4 (Revised 6-16-2026) — NOTE: Gillette uses the IPC, not the Uniform Plumbing Code. CHANGED 2026-07-16 audit: edition now reads 2021 (previously 2024 per Ord. 4052, 12-17-2024, no longer cited); appendices B, D, E unchanged.
• International Mechanical Code (IMC), 2021 Edition — adopted § 5-I-5 (Revised 6-16-2026). CHANGED 2026-07-16 audit: edition now reads 2021 (previously 2024 per Ord. 4052, 12-17-2024, no longer cited).
• National Electrical Code — City Code § 5-I-6 (Revised 6-16-2026) (including Article 80/Annex H). CHANGED 2026-07-16 audit: the live § 5-I-6.A paragraph now contains two different edition references in the same sentence — "...adopted by reference the National Electrical Code, 2023 Edition..." and later "...of the National Electrical Code, 2026 Edition, including Article 80, are hereby referred to, adopted..." — with the amendment history newly listing Ord. 4081 (6-16-2026) as the latest ordinance for this section. The ordinance's own text does not reconcile the two edition years; previously cited cleanly as 2023 Edition only.
• International Fuel Gas Code (IFGC), 2021 Edition — including Appendices A, B, C, D, adopted § 5-I-7 (Revised 6-16-2026). CHANGED 2026-07-16 audit: edition now reads 2021 (previously 2024 per Ord. 4052, 12-17-2024, no longer cited); appendices A, B, C, D unchanged.
• International Fire Code (IFC), 2021 Edition — including Appendices B, C, D, E, F, and G, adopted § 5-I-8 (Revised 6-16-2026). CHANGED 2026-07-16 audit: edition now reads 2021 and Appendices H and I are absent (previously 2024 Edition with Appendices B–I per Ord. 4052, 12-17-2024, no longer cited).
• International Existing Building Code (IEBC), 2021 Edition — adopted § 5-I-9 (Revised 6-16-2026). CHANGED 2026-07-16 audit: § 5-I-9.A reads "2021 Edition" (previously cited as 2024 Edition; the current text carries no ordinance citation for the edition line).
• Uniform Code for the Abatement of Dangerous Buildings, 1997 Edition — adopted § 5-I-10 (Revised 6-16-2026); edition unchanged, only the chapter revision date-stamp updated at the 2026-07-16 audit.

Permit types & fees

• Residential Building Permit (New Construction)

  Required for new single-family dwellings and other one- and two-family residential construction in Gillette. Governed by the IRC per City Code § 5-I-3 — live text as of 2026-07-16 reads 2021 Edition (previously 2024 Edition; see codesAdopted). Fee is based on total building square footage per the adopted schedule in City Code § 5-IV-1(b), reverified unchanged 2026-07-16.

  →

• Residential Addition / Remodel Permit

  Required for additions, structural alterations, remodels, and miscellaneous residential repairs to existing one- and two-family dwellings in Gillette. Governed by the IRC (City Code § 5-I-3) — live text as of 2026-07-16 reads 2021 Edition (previously 2024 Edition; see codesAdopted); fee for additions follows the same building-square-footage table as new construction (reverified unchanged 2026-07-16), while miscellaneous remodels/repairs use a flat $20 fee.

  →

• Electrical Permit

  Required for electrical installations, alterations, service changes, and repairs in Gillette. Per the Wyoming State Fire Marshal 'LOCAL AND STATE JURISDICTIONS' chart (ELEC INSP/PR = L/L for Gillette; chart PDF not re-accessible for direct re-verification 2026-07-16, so this delegation claim is carried forward unconfirmed this cycle), the CITY — not the Wyoming State Fire Marshal's electrical program — issues and inspects electrical permits inside city limits, under the NEC adopted by City Code § 5-I-6 — the live text as of 2026-07-16 (Revised 6-16-2026) cites both "2023 Edition" and "2026 Edition" in the same paragraph (see codesAdopted); previously cited cleanly as 2023 Edition. Fee is amperage-based per City Code § 5-IV-2 (reverified unchanged 2026-07-16), plus a Capital Contribution Fee for new/upgraded electrical service (reverified unchanged 2026-07-16).

  →

• Plumbing Permit

  Required for plumbing installations, alterations, and repairs in Gillette. Governed by the International Plumbing Code (IPC) per City Code § 5-I-4 — live text as of 2026-07-16 reads 2021 Edition (previously 2024 Edition; see codesAdopted) — NOTE: Gillette uses the IPC, not the Uniform Plumbing Code used by some other Wyoming/Nevada cities. Fee schedule is per-fixture/per-item under City Code § 5-IV-3(a), reverified unchanged 2026-07-16.

  →

• Mechanical / HVAC Permit

  Required for heating, cooling, ventilation, and gas piping installations in Gillette. Governed by the International Mechanical Code (IMC, City Code § 5-I-5) and International Fuel Gas Code (IFGC, § 5-I-7) — live text as of 2026-07-16 reads 2021 Edition for both (previously 2024 Edition; see codesAdopted). Residential new HVAC is a flat unit fee; gas piping is billed by outlet count (reverified unchanged 2026-07-16).

  →

• Roofing Permit (Reroof)

  Required for roof replacement (reroof) on residential and commercial buildings in Gillette. Governed by IRC Chapter 9 reroofing provisions per City Code § 5-I-3 — live text as of 2026-07-16 reads 2021 Edition (previously 2024 Edition; see codesAdopted); residential reroof is a low flat fee, commercial is a per-square-foot fee (reverified unchanged 2026-07-16).

  →

• Solar PV Permit

  Required for installation of rooftop or ground-mounted solar photovoltaic systems in Gillette. There is no separate 'solar' line item in the adopted fee schedule; solar PV installation is processed as a standard building permit (structural/racking, charged under the Building Square Feet table or Miscellaneous Residential fee) plus a standard electrical permit (amperage-based) for the interconnection.

  →

• Accessory Dwelling Unit (ADU) Permit

  Gillette's Adopted Zoning Ordinance (Ord. No. 4056, 12/17/2024) has NO dedicated 'Accessory Dwelling Unit' zoning category, definition, or standalone permit type. A full-text search of the current ordinance (SECTION 11. Definitions and all District Standards sections, via online.encodeplus.com/regs/gillette-wy-rewrite) returns only 'Accessory Structure' and 'Accessory Use' as defined terms — there is no ADU-specific use classification, size cap, or parking standard. A secondary living space on a single-family lot is built and permitted under the generic Accessory Structure/Accessory Use standards and the standard residential building permit process for the applicable zoning district (e.g., R-1 Single-Family Residential, R-2 Two-Family Residential).

  →

• Demolition Permit

  Required for demolition of buildings or structures in Gillette. Fee is a low flat rate per City Code § 5-IV-1(b); a separate flat fee applies to disconnect the electrical service and to cap off plumbing at the street.

  →

• Commercial Tenant Improvement / Commercial Building Permit

  Required for commercial building construction, tenant improvements, remodels, and alterations in Gillette. Governed by the IBC (City Code § 5-I-2) — live text as of 2026-07-16 reads 2021 Edition (previously 2024 Edition; see codesAdopted); routed through Planning Division site plan review, Building Inspection Division plan review/permit issuance, and (for utility work) Engineering Division review before Certificate of Occupancy.

  →

• EV Charger / EVSE Permit

  Required for installation of a residential or commercial electric vehicle charging station (EVSE) in Gillette. As with all electrical work in this jurisdiction, the City of Gillette — not the Wyoming State Fire Marshal's electrical program — issues and inspects the permit inside city limits (WSFM 'LOCAL AND STATE JURISDICTIONS' chart lists Gillette's ELEC INSP/PR as L/L), under the NEC adopted by City Code § 5-I-6. City Code § 5-IV-2 has no distinct EV-charger/EVSE fee line item — a standalone EVSE circuit is billed under the same amperage-based Electrical Permit fee table used for other electrical work, plus the Capital Contribution Fee if the installation involves a new or upgraded electrical service.

  →

• Deck Permit

  Required for most residential decks in Gillette under the IRC (live text as of 2026-07-16 reads 2021 Edition; previously 2024 Edition; see codesAdopted). A flat $20 permit fee applies (reverified unchanged 2026-07-16); small, low, detached decks not serving the main exit door are exempt from a building permit (though a zoning permit is generally still required).

  →

• Basement Finish Permit

  Required to finish a basement in Gillette, but the building permit fee itself is waived because the building square footage was already charged under the original construction permit. Plumbing and mechanical permits are also fee-free unless special circumstances apply; a standard-fee electrical permit is required for new wiring.

  →

• Sign Permit

  Required for most signs erected, altered, or maintained within Gillette city limits. Governed by the current Adopted Zoning Ordinance (Ord. No. 4056, 12/17/2024), Section 8 (Signs) — Zoning Administrator approval is required and the application is filed through the Building Division's EnerGov Self Service portal; the City Code Chapter 5, Article IV fee schedule (Revised 6-16-2026) sets a flat $30 permit fee for signs (including LED, but not video signs).

  →

• Fire Sprinkler System Permit

  Required for installation of a fire sprinkler system in Gillette. The City of Gillette collects a flat $30 permit fee, but — unlike every other permit type in this jurisdiction — the City Code fee table itself states that the Campbell County Fire Department (CCFD), not the City Building Division, performs the plan check and inspections. CCFD's plan-review submittal uses the Wyoming State Fire Marshal's Office (WSFO) Fire Sprinkler System checklist.

  →

• Fire Alarm System Permit

  Required for installation of a commercial/industrial fire alarm system in Gillette. Campbell County Fire Department (CCFD) lists "Fire Alarm System" as its own distinct plan-review category (separate from Fire Sprinkler System) and "fire alarm acceptance" as its own distinct construction-inspection type — but unlike fire sprinkler systems, Gillette's City Code Chapter 5, Article IV fee schedule has NO dedicated fire-alarm fee line item. This is a genuine, confirmed gap after a full read of the adopted fee schedule, not an omission in this entry.

  →

• Certificate of Occupancy / Change of Use

  Gillette has NO stand-alone 'Change of Use Permit' or separate 'Certificate of Occupancy' application/fee in City Code Chapter 5. A change to a building's occupancy classification is governed by the adopted International Existing Building Code (IEBC, 2021 Edition, City Code § 5-I-9), which by its own scope regulates the repair, alteration, change of occupancy, addition, and relocation of existing buildings. A Certificate of Occupancy (CO) or Temporary Certificate of Occupancy (TCO) is issued by Building Inspection as the FINAL STEP of the standard building-permit process — shown as the terminal 'TCO/CO — CERTIFICATE OF OCCUPANCY — BUILDING INSPECTION' box on the City's own Commercial Building Permit Process flow chart — not as an independently-applied-for product with its own line item in the § 5-IV fee schedule.

  →

Comparable nearby cities