Do I Need a Permit to Replace Windows in Wyoming?
Find out when you need a permit to replace windows. Like-for-like vs. resized openings, energy code requirements, and inspection tips.
Usually no — but yes if you change the size of the opening.
When You Don't Need a Permit
Like-for-like window replacements — where the new window fits the exact same rough opening — typically do not require a building permit. This covers most standard window replacements where you are upgrading the glass, frame material, or energy efficiency without altering the wall structure.
When You Do Need a Permit
A permit is required when you change the size of a window opening (larger or smaller), add a new window where one didn't exist, convert a window to a door or vice versa, or install egress windows for basement bedrooms. These changes involve structural modifications (headers, jack studs) that must be inspected.
Energy Code Requirements
Replacement windows generally must meet the locally adopted energy code — most jurisdictions follow the IECC. Check the NFRC label on any window before purchasing and confirm your local edition's window U-factor requirement. This applies even when no permit is required — it's a code requirement.
Egress Windows
If you're adding a bedroom in a basement, most jurisdictions require an egress window with a minimum 5.7 sq ft net clear opening and a sill no higher than 44 inches above the floor (the IRC standard). Window wells deeper than 44 inches need a permanently attached ladder or steps. This always requires a permit.
Swapping windows in the same opening? No permit needed. Changing the opening size or adding egress windows? Get a permit.
Permit fees by city in Wyoming
Verified from each city’s published fee schedule. Where a city has no separate fee listed for this project, open the city page for the current requirements and amount.
18 rows
| Permit fee | Source | |
|---|---|---|
| Casper | $35Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Cheyenne | $23.50Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Evanston | $0.010 × project cost (minimum charge $30.00)Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Gillette | $30.00Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Green River | 50% of: $30.00 ($1-$500), $60.00 ($501-$1,000), or $90.00 ($1,001-$2,000)Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Jackson | $564.00Verifiedvia One and Two Family Building Permit | One and Two Family Building Permit → |
| Laramie | $23.50 (no plan review fee below $5,000 valuation)Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Riverton | $0.42 per square foot of building area (includes building and all building systems)Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Rock Springs | $1,100.00 flat — no plan review fee chargedVerifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Sheridan | Valuation x 0.03 x 0.8Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Unincorporated Albany County | $300.00Verifiedvia Zoning Certificate & Rural Address (county's "Building Permit" stand-in) | Zoning Certificate & Rural Address (county's "Building Permit" stand-in) → |
| Unincorporated Campbell County | No feeVerifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Unincorporated Laramie County | $75.00Verifiedvia Residential Building Permit (New Single-Family Residence) | Residential Building Permit (New Single-Family Residence) → |
| Unincorporated Natrona County | $70Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Unincorporated Sheridan County | $150.00Verifiedvia Zoning Permit | Zoning Permit → |
| Unincorporated Sweetwater County | $50.00Verifiedvia Zoning/Construction Permit (Land Use) — not a building-code permit | Zoning/Construction Permit (Land Use) — not a building-code permit → |
| Unincorporated Teton County | 1st 2,500 sq ft x construction cost/sq ft x 0.006, plus next 2,500 sq ft x 0.009, plus remaining sq ft x 0.012 (valuation from the current ICC Building Valuation Data table); remodels valued at 75% of new-construction valuationVerifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Unincorporated Uinta County | $50.00Verifiedvia Land Use Certificate (Zoning / Use Approval) | Land Use Certificate (Zoning / Use Approval) → |