County Building Permits
Carbon County, WY - 2026 Building Permit Guide
How to apply for a building permit in unincorporated Carbon County, Wyoming. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
The Carbon County Planning and Zoning Department administers land-use regulations and issues building-related permits for all unincorporated areas of Carbon County. Carbon County encompasses approximately 7,896 square miles. Incorporated municipalities within the county (Rawlins, Saratoga, Encampment, Riverside, Medicine Bow, Elk Mountain, and Hanna) maintain their own permitting authority and are not covered by county permits for work within their corporate limits.
- Department
- Carbon County Planning and Zoning Department
- Address
- 215 West Buffalo Street, Suite 336, Rawlins, WY 82301
- Phone
- 307-328-2651
- planning@co.carbon.wy.us
Online Permit Portal
Platform: • Account required: No • Submission: In-person only
Additional resources:
Application Process
- Confirm jurisdiction: Verify whether the subject property is in unincorporated Carbon County or within the limits of one of the incorporated municipalities (Rawlins, Saratoga, Encampment, Riverside, Medicine Bow, Elk Mountain, Hanna). If in a municipality, contact that municipality's building or zoning office instead.
- Contact Planning and Zoning: Call 307-328-2651 or email planning@co.carbon.wy.us to confirm whether your project type requires a county permit or zoning approval.
- Obtain application forms: Pick up or request forms from the Planning and Zoning Department at 215 West Buffalo Street, Suite 336, Rawlins.
- Prepare required documents: Typically includes a completed permit application, site plan showing parcel boundaries and setbacks, project description, construction drawings or plans (PE-stamped plans required for commercial, industrial, and certain structural projects), and payment for applicable fees.
- Submit application and fees to the Planning and Zoning Department.
- Await plan review: Staff reviews the application for compliance with zoning regulations (setbacks, land use classification, floodplain requirements if applicable) and any adopted building standards.
- Receive permit approval or correction notice. Address any required corrections and resubmit.
- Post the permit on site before beginning work.
- Schedule any required inspections.
- Obtain final approval or certificate of occupancy upon project completion.
Typical processing time: Not formally published; contact the department at 307-328-2651 for current estimates. Simple residential permits in rural Wyoming counties often process within one to two weeks when documentation is complete.
General Requirements
Carbon County's specific permit triggers should be confirmed with the Planning and Zoning Department. Generally in Wyoming's unincorporated counties, permits are required for new construction of primary structures, accessory structures above a certain square footage threshold, additions to existing structures, mobile home placements, and commercial or industrial construction. Fences, agricultural buildings, and minor repairs may or may not require a permit depending on county policy. Zoning certificates or land use approvals may be required even where a formal building permit is not.
Required Documents
- Permit application form
- Site plan (drawn to scale showing parcel lines, structure footprints, setback dimensions, access points, utility locations)
- Construction plans for structural work
- Proof of any applicable state electrical permit
- For commercial or industrial projects: PE-stamped drawings, Wyoming State Fire Marshal review documentation, and potentially an environmental impact analysis
- Permit validity
- Typically 180 days to one year from issuance; confirm with the department
- Building code
- Wyoming has no statewide residential building code mandate. Carbon County has historically not adopted a comprehensive International Building Code for residential construction in unincorporated areas, though this should be verified directly with the Planning and Zoning Department, as adoption status can change by resolution. Commercial and industrial projects, especially large-scale ones (wind energy facilities, I-80 corridor industrial), may be subject to state-level requirements and/or lender/insurer code requirements even where county adoption is absent.
- Owner-builder
- Wyoming generally allows property owners to perform construction on their own property without a contractor license. Verify with the department.
- Contractor requirements
- Wyoming has no statewide general contractor licensing requirement. However, electrical contractors must hold a Wyoming State Electrical License. Carbon County may have its own contractor registration requirements; confirm with the Planning and Zoning Department.
Fees
- Permit fee formula
- Valuation-based or flat fee depending on project type; specific formula not publicly available. Comparable Wyoming rural counties typically charge valuation-based fees starting at $25-$50 for small projects and scaling upward based on construction cost or square footage.
- Payment note
- Fees are typically due at time of permit application. Accepted payment methods (check, credit card, cash) should be confirmed with the department.
Work That Does NOT Require a Permit
- Agricultural structures: Wyoming traditionally provides broad exemptions for agricultural structures (barns, equipment storage, grain storage, livestock facilities) on working farms and ranches. However, structures with plumbing, electrical service, or habitable space generally require permits even on agricultural land.
Important: Confirm specific thresholds with the Planning and Zoning Department at 307-328-2651.
Inspections
How to Schedule
- ()
- Inspection hours
- Monday through Friday, 8:00 AM to 5:00 PM (Mountain Time), excluding state and county holidays
Typical inspection sequence: Typical inspection sequence for new residential construction (where applicable): 1) Pre-construction/setback inspection, 2) Foundation/footing inspection, 3) Foundation wall inspection (if applicable), 4) Framing inspection, 5) Insulation inspection, 6) Electrical rough-in, 7) Plumbing rough-in (if applicable), 8) Mechanical rough-in (if applicable), 9) Final inspection.
Due to the county's large geographic area (approximately 7,896 square miles), inspection scheduling for remote sites may require more lead time than for properties close to Rawlins.
Additional Resources
- Building code: Wyoming has no statewide residential building code mandate. Carbon County has historically not adopted a comprehensive International Building Code for residential construction in unincorporated areas, though this should be verified directly with the Planning and Zoning Department, as adoption status can change by resolution. Commercial and industrial projects, especially large-scale ones (wind energy facilities, I-80 corridor industrial), may be subject to state-level requirements and/or lender/insurer code requirements even where county adoption is absent.
- Wyoming State Electrical Program
- Wyoming State Fire Marshal
- Wyoming DEQ
- Wyoming State Engineer's Office
- FEMA Flood Map Service Center
- Bureau of Land Management Rawlins Field Office
- Wyoming Industrial Siting Division
- Wyoming State Historic Preservation Office
- License lookup guide: Wyoming Contractor License Requirements
- Contract template: Wyoming Homeowner-Contractor Agreement
- Wyoming hub: Wyoming Contractor License & Permit Hub
Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Carbon County Planning and Zoning Department before applying.
Frequently Asked Questions
Carbon County Building Permit FAQ
- Do I need a building permit in unincorporated Carbon County, WY?
- Carbon County's specific permit triggers should be confirmed with the Planning and Zoning Department. Generally in Wyoming's unincorporated counties, permits are required for new construction of primary structures, accessory structures above a certain square footage threshold, additions to existing structures, mobile home placements, and commercial or industrial construction. Fences, agricultural buildings, and minor repairs may or may not require a permit depending on county policy. Zoning certificates or land use approvals may be required even where a formal building permit is not.
- How much does a building permit cost in unincorporated Carbon County, WY?
- Fees are calculated as: Valuation-based or flat fee depending on project type; specific formula not publicly available. Comparable Wyoming rural counties typically charge valuation-based fees starting at $25-$50 for small projects and scaling upward based on construction cost or square footage..
- How do I apply for a building permit in unincorporated Carbon County, WY?
- 1. Confirm jurisdiction: Verify whether the subject property is in unincorporated Carbon County or within the limits of one of the incorporated municipalities (Rawlins, Saratoga, Encampment, Riverside, Medicine Bow, Elk Mountain, Hanna). If in a municipality, contact that municipality's building or zoning office instead. 2. Contact Planning and Zoning: Call 307-328-2651 or email planning@co.carbon.wy.us to confirm whether your project type requires a county permit or zoning approval. 3. Obtain application forms: Pick up or request forms from the Planning and Zoning Department at 215 West Buffalo Street, Suite 336, Rawlins. 4. Prepare required documents: Typically includes a completed permit application, site plan showing parcel boundaries and setbacks, project description, construction drawings or plans (PE-stamped plans required for commercial, industrial, and certain structural projects), and payment for applicable fees. 5. Submit application and fees to the Planning and Zoning Department. 6. Await plan review: Staff reviews the application for compliance with zoning regulations (setbacks, land use classification, floodplain requirements if applicable) and any adopted building standards. 7. Receive permit approval or correction notice. Address any required corrections and resubmit. 8. Post the permit on site before beginning work. 9. Schedule any required inspections. 10. Obtain final approval or certificate of occupancy upon project completion.
- How long does it take to get a building permit in unincorporated Carbon County, WY?
- Typical processing time is Not formally published; contact the department at 307-328-2651 for current estimates. Simple residential permits in rural Wyoming counties often process within one to two weeks when documentation is complete..
- What work is exempt from building permits in unincorporated Carbon County, WY?
- The following work is generally exempt: Agricultural structures: Wyoming traditionally provides broad exemptions for agricultural structures (barns, equipment storage, grain storage, livestock facilities) on working farms and ranches. However, structures with plumbing, electrical service, or habitable space generally require permits even on agricultural land.. Note: Confirm specific thresholds with the Planning and Zoning Department at 307-328-2651.
- How do I schedule a building inspection in unincorporated Carbon County, WY?
- Inspections can be scheduled via: .
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