Administrative overview · FIPS 56003
Big Horn County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
County
This county profile is the primary starting point for unincorporated-area permitting.
Responsible agency
Big Horn County Land Planning Department
For a project in or near Big Horn County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
307-568-2424
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Big Horn County Land Planning Office, 425 Murphy Street, Basin, WY 82410; mailing address P.O. Box 29, Basin, WY 82410
Operating hours
Monday-Friday, 8:00 AM-5:00 PM Mountain; appointments are strongly recommended because of fieldwork and meetings
Review expectation
Ask the agency for its current review estimate
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Frequently asked questions for Big Horn County
Who handles permitting for this jurisdiction?
Big Horn County Land Planning Department is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
How should I begin an application?
No verified online portal was located in the reviewed public materials. Contact 307-568-2424 and request the current application route before preparing a final submittal.
How long might review take?
A typical review timeline was not verified. Ask the agency for its current completeness and review estimate.
How are inspections scheduled?
The County performs no structural building-code inspections. For a septic installation, call Land Planning at 307-568-2424 and give at least 24 hours' notice before burial; the installer may not backfill until the department visits the site and gives final approval. Right-of-way access permits require an onsite review before approval and another after construction, coordinated with Engineering at 307-568-2467.
Which codes and exemptions should I review?
Big Horn County has no building code and no countywide zoning in unincorporated areas. A County development permit is nevertheless required for construction and development, and staff review each proposal for the Flood Damage Prevention Regulation, localized airport-protection zoning and other applicable land-planning rules. Contractors must comply with applicable Wyoming electrical and fire-protection codes. Municipal projects are governed by the applicable town's codes and permit requirements. N/A. The County has no building code and publishes no list of minor or cosmetic building-permit exemptions, but its Development Application expressly applies to any new construction or development activity in unincorporated Big Horn County. The County FAQ advises contacting Land Planning before alterations or improvements; fences outside a floodplain have no county building-code requirements, while a fence or other work in a mapped floodplain requires prior consultation and may need a floodplain permit.