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Municipal GuideWyomingConverse County

Converse County, Wyoming Building Permit Guide

Converse County issues no building permit for unincorporated land; its Special Projects office permits septic systems and floodplain construction, Road & Bridge permits driveways and addresses, and Douglas and Glenrock run their own building permits.

Authority: Converse County Special Projects and Road & BridgeCode: No county building codePhone: 307-358-1990
Septic and floodplain
Special Projects107 N 5th St, Douglas · 307-358-1990
Driveway and address
Road & Bridge$100 inspection fee within 20 air miles
Septic permit
$200Commercial systems go to the state DEQ

Converse County does not issue building permits or inspect construction outside its towns. On unincorporated land the county permits a home septic system ($200, Special Projects), construction in a mapped flood hazard area, and a new driveway and address onto a county road (Road & Bridge); electrical permits come from the State of Wyoming. Inside Douglas, Glenrock and Rolling Hills, the town issues building permits.

What needs a county permit in Converse County?

The county’s Permits & Regulations page lists the approvals that apply to unincorporated land; none of them is a building permit:

County approvals

  • A residential septic permit before a new system is built
  • A Flood Plan Construction permit before building or developing in a special flood hazard area
  • An Approach Access and Address permit before building a driveway onto a county road, which also leads to the rural address
  • Bore, utility right-of-way and temporary access permits for work in county roads
  • Subdivision approval and wind or solar energy siting permits

Not county permits

  • Building permits and construction inspections
  • Electrical permits (State of Wyoming)
  • Commercial septic systems (Wyoming DEQ)
  • Work inside Douglas, Glenrock, Rolling Hills or Lost Springs

Who handles permitting in Converse County?

The Special Projects department administers septic permits, the flood damage prevention regulations and the subdivision regulations, and staffs the county Planning & Zoning Commission, which meets on the third Tuesday of the month. The Road & Bridge Department issues access, address and right-of-way permits. The state’s jurisdiction chart marks every function in the unincorporated county as state-run, so commercial plan review and electrical inspection come from the state.

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Who issues building permits in each Converse County town
PlaceWho permits
Douglas (city, 2025 pop. 6,469)City Planning & Community Development, through the CityWorks portal; 307-358-2132
Glenrock (2,418)Town Building Inspector, with a town building permit application, fee schedule and contractor licence; 307-436-9294 ext. 215
Rolling Hills (428)Town Building Permit Application, plus a separate application to move a structure into town
Lost Springs (3)The published sources do not say; ask the town. County permits do not cover town land
Unincorporated countyNo building permit; septic and floodplain permits from Special Projects, access from Road & Bridge

The state chart lists Douglas as running its own building inspection and plan review; electrical work in Douglas and in every other town is listed as state-run.

County permits and how they work

  • Residential septic permit: pick up the application package from Special Projects, 107 N. 5th St., Suite B-6, Douglas. The completed package must be approved and the $200 fee paid before construction starts, and systems are built to the county’s Minimum Standards Governing Individual Small Wastewater Systems.
  • Flood Plan Construction permit: needed before any construction or development in a special flood hazard area, on Special Projects forms, with scaled plans and the elevation of the lowest floor.
  • Approach Access and Address permit: filed with Road & Bridge with the landowner’s signature and a site sketch, and the location marked on the ground for the field inspection. Address assignment takes about 5 business days after Road & Bridge approval.

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Converse County fees

Converse County permit fees
ProjectFee
Residential septic permit$200
Approach access and address permit, within 20 air miles of the Road & Bridge office$100 inspection fee
Approach access and address permit, beyond 20 air miles$150 inspection fee
Temporary access permit$700 plus the $100 or $150 inspection fee
Bore permit$125 per hole plus the inspection fee
Commercial approach sign installed by the county$250 per sign

Road & Bridge fees are from its fee schedule revised in May 2026. There is no county building permit fee. A state wiring permit is a separate state charge.

Electrical, septic and state review

Electrical: the State Department of Fire Prevention and Electrical Safety issues wiring permits and inspects electrical work throughout the county, including in the towns.

Septic: residents build their own residential systems under a county permit from Special Projects; commercial systems are permitted by the Wyoming DEQ Water Quality Division, according to the county’s notice.

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Commercial and public buildings: plan review for the buildings state law assigns to the State Fire Marshal goes to the state; the state chart lists that review as state-run throughout the county.

What to have ready

  • For a septic permit: the county’s application package, completed and signed, with the $200 fee
  • For a floodplain permit: plans in duplicate drawn to scale, showing existing and proposed structures, fill, drainage and the lowest floor elevation; non-residential floodproofing needs an engineer’s or architect’s certification
  • For a driveway: the access permit signed in ink by the landowner next to the county road, Exhibit A with the diagram, and the inspection fee

How to proceed: 4 steps on unincorporated land

1. Confirm the location

Make sure the parcel is outside Douglas, Glenrock, Rolling Hills and Lost Springs, and check the county map for flood hazard areas.

2. Get the driveway and address

Apply to Road & Bridge for the approach access and address permit and build the driveway within 180 days of approval.

3. Permit the septic system

Get the septic package from Special Projects and have it approved and paid before construction.

4. Buy the state wiring permit

Apply through the state for the electrical permit and inspections.

Inspections

The county makes no building inspections. Road & Bridge inspects the driveway location in the field and gives final approval once the access is built; the access is not legal until that approval is filed. Tell Road & Bridge when the driveway is finished. Electrical inspections come from the state.

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Local Converse County details

Driveway rules: residential drives may be up to 24 ft wide and commercial drives up to 32 ft, the first 30 ft from the road shoulder must hold a 2% grade, and any culvert is at least 12 inches.

Seasonal roads: County Roads 24, 16, 18, parts of 11 and part of 5 (Esterbrook Road) are closed from November 1 to April 30 with no winter maintenance.

Douglas codes: the City of Douglas has adopted the 2024 International Codes and the 2023 National Electrical Code (Ordinance 1061), with a 42-inch frost depth, and charges 65% of the building permit fee for each change to plans under review or already permitted.

Wyoming building code

Wyoming’s state-adopted codes are the 2024 International Fire, Building, Fuel Gas, Mechanical and Existing Building Codes and the 2026 National Electrical Code, applied through the State Fire Marshal’s plan review and electrical program; cities and counties add their own building, zoning and floodplain rules. Wyoming’s state codes and review

Official Converse County resources

These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.

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Converse County permit FAQs

Does Converse County require a building permit?

No. The county issues no building permit and makes no construction inspections on unincorporated land; it permits septic systems, floodplain construction and county road access.

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Who issues septic permits in Converse County?

The county Special Projects department (307-358-1990) issues residential septic permits for $200. Commercial systems are permitted by the Wyoming DEQ.

How do I get an address for a new home?

Through the Road & Bridge Approach Access and Address permit. The inspection fee is $100 within 20 air miles of the Road & Bridge office or $150 beyond, and the address follows about 5 business days after approval.

Who issues building permits in Douglas and Glenrock?

Douglas’s Planning & Community Development department, through its CityWorks portal, and Glenrock’s Building Inspector at the Town of Glenrock.

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