Deck Permit in Gillette, Wyoming
VerifiedRequired for most residential decks in Gillette under the 2024 IRC. A flat $20 permit fee applies; small, low, detached decks not serving the main exit door are exempt from a building permit (though a zoning permit is generally still required).
Verified 2026-07-01 · Source
When you need this permit
- Decks exceeding 200 sq ft, attached to the dwelling, more than 30 inches above grade (within 36 inches of the deck), or serving the main exit door require a building/zoning permit
- Decks NOT exceeding 200 sq ft, NOT attached to the dwelling, NOT more than 30 inches above grade within 36 inches, and NOT serving the main exit door do not need a building permit (a zoning permit is still required in most instances)
- Footings: minimum 42 inches deep from finish grade to bottom of footing, 8 inches thick, extending 2 inches beyond post sides on all sides
- Posts: 4x4 minimum up to 8 ft height; 5x6 required over 8 ft; must rest on footings, secured with a galvanized steel post base or equivalent
- Decks 18 inches or less above finished grade must use pressure-treated or decay-resistant lumber (measured from the bottom of the floor joists)
- Ledger boards require proper flashing (stainless steel, UV-resistant plastic, or G-185 galvanized steel) at the connection to the house
Required documents
- Req
Building/Zoning Permit Application (via EnerGov Self Service)
Apply online; plot plan required for zoning review
- Req
Plot Plan
Required for zoning; examples available from the Building Inspection Division
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Deck | $20.00 | City Code § 5-IV-1(b) (Revised 12-2024) |
Review timeline
~0–5 business days
Typical estimate — confirm current times with the Gillette building department
Inspection process
- 1
Footing
Before concrete pour — verify 42-inch minimum depth and post footing dimensions
- 2
Framing
Ledger board attachment/flashing, joist hangers, post/beam connections
- 3
Final
Completed deck per approved plans
Tips
- A deck under 200 sq ft that's detached from the house, low (≤30 in. within 36 in. of the deck), and not at the main entry can skip the building permit — but confirm with the Building Division at (307) 686-5260, since a zoning permit is still typically required.
- Ledger board attachment requires the house siding/exterior finish to be removed first and proper flashing installed — a common inspection failure point.
- The $20 flat fee makes decks one of the cheapest permit types in Gillette.
Frequently asked questions
- Do I need a permit to build a deck in Gillette?
- Most decks need a building/zoning permit ($20 flat fee). A deck can skip the BUILDING permit only if it is 200 sq ft or less, not attached to the dwelling, no more than 30 inches above grade (within 36 inches of the deck), and not serving the main exit door — but a zoning permit is still required in most instances. Call the Building Inspection Division at (307) 686-5260 if in doubt.
Sources & verification
Verified against official sources. Last reviewed 2026-07-01.
- City of Gillette Development Services — Building Division — official building department
- City of Gillette Guideline to 2024 IRC Residential Construction for Decks
- City of Gillette Code, Chapter 5 Buildings (Revised 12-2024), § 5-IV-1(b) Deck Fee
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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