Commercial Tenant Improvement / Commercial Building Permit in Gillette, Wyoming
VerifiedRequired for commercial building construction, tenant improvements, remodels, and alterations in Gillette. Governed by the 2024 IBC (City Code § 5-I-2); 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.
Verified 2026-07-01 · Source
When you need this permit
- Commercial Site Plan Requirements Checklist must be satisfied through the Planning Division before applying for the building permit
- Plans for buildings with occupant load over 10 must be signed and sealed by a Wyoming-registered professional engineer or architect
- Complete plan set required: general documents, architectural, structural, electrical (incl. low voltage), civil, plumbing, mechanical, gas line, and fire plans (fire plans routed to Campbell County Fire Department)
- Plans must show IBC code data analysis on the title sheet: use group classification, construction type, fire-resistive construction, design approach method, height/area calculations, fire protection systems, interior finish, occupant loads, means of egress, and accessibility features
- Comcheck energy compliance report (2012 IECC or ASHRAE 90.1-2013) required with commercial plans (certain low-hazard occupancy groups exempted)
- Right-of-way (ROW) permit required from Engineering Division if new water/sewer service connections are needed
- Miscellaneous commercial remodels up to 500 sq ft use a flat fee; larger commercial projects use the Building Square Feet table
- Contractor must hold a City of Gillette Class A (General) or Class B (Building) contractor license
Required documents
- Req
Commercial Site Plan Requirements Checklist
Planning Division checklist that must be satisfied before/alongside the building permit application
- Req
Commercial Buildings and Structures — Minimum Plan Submittal Requirements
Building Inspection Division's checklist of the complete plan set (architectural, structural, electrical, civil, plumbing, mechanical, gas, fire, general sheets)
- Req
Building Permit Application (via EnerGov Self Service)
Digital plan submittal through the City of Gillette EnerGov Self Service portal
- Req
Fire Plans
Routed to Campbell County Fire Department for review
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| First Commercial Plan Review (incl. Commercial Master Plans) | $100.00 | City Code § 5-IV-1(a) (Revised 12-2024) |
| Second Commercial Plan Review | $200.00 | — |
| Third Commercial Plan Review | $1,125.00 | — |
| Fourth and any additional Commercial Plan Review | $1,500.00 each | — |
| Building Permit Fee (by resulting building square footage) | $30–$150+$0.04/sq ft — same Building Square Feet table as residential | City Code § 5-IV-1(b) |
| Miscellaneous Commercial (remodels up to 500 sq ft) | $30.00 | Larger commercial remodel projects are charged per the Building Square Feet table |
| Cell and other Towers | $100.00 | — |
| Antenna Co-Locates | $100.00 | — |
| Temporary Job Trailers | $30.00 | — |
| Commercial Reroof | $0.0050 per square foot | — |
Review timeline
~0–21 business days
Typical estimate — confirm current times with the Gillette building department
Inspection process
- 1
Foundation / Footing
Per stamped structural plans, before concrete pour
- 2
Rough MEP / Fire
Electrical, plumbing, mechanical, and fire suppression rough-in before walls closed
- 3
Final — Building Inspection
All work complete per approved plans
- 4
TCO / CO
Temporary Certificate of Occupancy or Certificate of Occupancy issued by Building Inspection after Council acceptance of utilities (if applicable) and FLC (Final Location Certificate) submittal to Planning/GIS
Tips
- Commercial plan review fees escalate steeply on resubmittals: $100 (1st) → $200 (2nd) → $1,125 (3rd) → $1,500 (4th+) — get your plans right the first time to avoid the 3rd/4th review penalty.
- The commercial process flows through three divisions in sequence: Planning (site plan) → Building Inspection (permit) → Engineering (ROW/utility permit if needed) before a Certificate of Occupancy is issued.
- Fire plans are routed separately to the Campbell County Fire Department (CCFD) as part of the Building Inspection Division submittal.
- Plans for any commercial building with occupant load over 10 must be signed and sealed by a Wyoming-registered engineer or architect.
Frequently asked questions
- How much does a commercial plan review cost in Gillette?
- $100 for the first review, $200 for the second, $1,125 for the third, and $1,500 for the fourth and any additional review — City Code § 5-IV-1(a). This applies to Commercial Master Plans as well as standard commercial submittals.
- What's the process for a commercial building permit in Gillette?
- Per the City's Commercial Building Permit Process flow chart: apply for a Commercial Site Plan through the Planning Division (drainage report, traffic report, floodplain data, landscape plan, plot/site plan, wastewater application), then apply for the Building Permit through Building Inspection (commercial plans plus fire plans to CCFD), then (if new utility connections are needed) apply for a ROW permit through Engineering. The permit is issued by Building Inspection, and a TCO/CO is issued once all reviews and inspections are complete.
Sources & verification
Verified against official sources. Last reviewed 2026-07-01.
- City of Gillette Development Services — Building Division — official building department
- City of Gillette Code, Chapter 5 Buildings (Revised 12-2024), § 5-I-2 IBC Adoption, § 5-IV-1 Permit/Plan Review Fees
- City of Gillette Commercial Buildings and Structures — Minimum Plan Submittal Requirements
- City of Gillette Commercial Building Permit Flow Chart
- City of Gillette Commercial Site Plan Requirements Checklist
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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