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Residential Addition / Remodel Permit in Gillette, Wyoming

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.

Verified 2026-07-16 · Source

When you need this permit

  • Additions are permitted under the same building-square-footage fee table as new construction
  • Miscellaneous residential work (remodels, damage repair, residing) is a flat-fee permit
  • Structural additions require stamped plans/calculations as applicable
  • Applications submitted via EnerGov Self Service portal
  • Plot plan required for zoning review of additions that change the building footprint

Required documents

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Fee schedule

Building Permit Fee — additions (by resulting building square footage)City Code § 5-IV-1(b), Building Square Feet fee schedule
$30–$150+$0.04/sq ft — same tiered table as new construction
Miscellaneous Residential (remodels, damage, repair, or residing)City Code § 5-IV-1(b)
$20.00
Basement finish — building permit feeCity Code § 5-IV-1(b): a building permit is still required to finish a basement, but the building permit fee itself is waived since the square footage was already charged under the original permit; plumbing/mechanical permits to finish the basement are also fee-free unless special circumstances apply (new water heater/furnace, opened floor for drain lines). A standard electrical permit at the standard fee IS required for new circuits/wiring/outlets.
Waived (no charge)

Review timeline

Plan reviewTypical estimate — confirm current times with the Gillette building department
~0–10 business days

How long did your Residential Addition / Remodel Permit permit actually take in Gillette?

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

Inspection process

  1. 1

    Footing / Foundation (if new footings)

    Before concrete pour, per soils engineer verification

  2. 2

    Rough Plumbing / Electric / Mechanical / Gas

    Before walls closed

  3. 3

    Rough Framing

    After rough MEP/gas complete and structure weather-tight

  4. 4

    Final

    All work complete per approved plans

See the full Gillette inspection guide — scheduling & re-inspection fees →

Tips

  • Miscellaneous residential repairs, remodels, and residing are a flat $20 permit — much simpler than the square-footage table used for true additions.
  • Basement finishes get a free building permit fee waiver, but a permit is still legally required — don't skip applying just because there's no fee.
  • A standard-fee electrical permit is still required for a basement finish even though the building/plumbing/mechanical fees are typically waived.

Frequently asked questions

Yes, a building permit is required, but City Code § 5-IV-1(b) waives the building permit fee for basement finishes (since the square footage was already charged on the original permit). Plumbing and mechanical permits are also fee-free unless special circumstances apply (e.g., a new water heater or furnace, or opening the floor for new drain lines). A standard-fee electrical permit is required for new circuits/wiring/outlets.

Miscellaneous residential permits (remodels, damage repair, residing) are a flat $20.00 fee per City Code § 5-IV-1(b). True additions that add square footage are charged under the same tiered building-square-footage table used for new construction.

Plan review for a residential addition / remodel permit in Gillette typically runs 0–10 business days. This is an estimate, not a published figure — confirm current review times with City of Gillette Development Services — Building Division at (307) 686-5260.

You'll need: Building Permit Application (via EnerGov Self Service); Plot Plan; Construction Drawings. See the required-documents checklist on this page for details on each.

Gillette requires 4 inspection(s) for a residential addition / remodel permit, in order: Footing / Foundation (if new footings), Rough Plumbing / Electric / Mechanical / Gas, Rough Framing, Final. Schedule each through City of Gillette Development Services — Building Division ((307) 686-5260).

Apply through City of Gillette Development Services — Building Division at 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). Official information: https://www.gillettewy.gov/Departments/Development-Services/Building-Division.

Gillette, Wyoming has adopted: 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.. Local amendments apply — see the Gillette overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-07-16.

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

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