Do I Need a Permit to Finish My Basement in Wyoming?
Basement finishing permit requirements. Egress windows, inspections, and what you need before starting your basement remodel.
Yes — any framing, electrical, plumbing, or mechanical work requires a permit.
What Requires a Permit
Framing walls, adding electrical circuits, installing plumbing, and modifying HVAC in a basement all require a building permit. Cosmetic work — painting, laying floating floors over existing concrete, and adding furniture — does not.
Egress Windows Are Non-Negotiable
Every basement bedroom must have an egress window: minimum 5.7 sq ft net clear opening, sill no higher than 44 inches above the floor (the IRC standard most jurisdictions follow). Window wells deeper than 44 inches need a permanently attached ladder or steps. This is a life-safety requirement — inspectors will not pass a basement without proper egress.
The Four Inspections
Expect four inspections: framing (walls, fire blocking, egress openings), MEP rough-in (electrical, plumbing, HVAC before walls are closed), insulation (exterior walls, vapor barrier), and final (drywall, fixtures, smoke/CO detectors). Do not close walls before passing framing and rough-in inspections.
Common Mistakes
Enclosing the furnace room without combustion air supply, skipping egress windows in bedrooms, not adding enough electrical circuits (you'll want dedicated circuits for the bathroom and any kitchen/wet bar), and forgetting smoke detectors in every bedroom and outside sleeping areas.
Yes, you need a permit. The biggest requirement is egress windows for bedrooms. Budget 4 inspections and don't close walls before passing rough-in.
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.
| City | Permit fee | Source |
|---|---|---|
| Casper | $35Verified | Basement Finish Permit → |
| Cheyenne | Varies by project valuation — see Building and Construction Permit Fee table under residential-building-permitVerified | Basement Finish Permit → |
| Evanston | $0.010 × project cost (minimum charge $30.00)Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Gillette | Waived (no charge)Verified | Basement Finish Permit → |
| 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) → |