Evanston, WY - 2026 Building Permit Guide

Permit Authority

Evanston is Uinta County's seat and the largest municipality with approximately 12,000 residents. City jurisdiction applies within incorporated city limits. Evanston operates its own Building Department with adopted building codes and a comprehensive permit program.

Department

City of Evanston Building Department

Address

1200 Main Street, Evanston, WY 82930 (City Hall)

Phone

307-783-6300 (City Hall main); Building Department: 307-783-6320

Email

Contact via city website or call Building Department directly

Website

https://www.evanstonwy.org/departments/building

Online Permit Portal

Application Process

1. Contact the Evanston Building Department at 307-783-6320 before beginning any project to confirm permit requirements for your specific project type.
2. Obtain the appropriate building permit application form from the Building Department at City Hall or download from the city website if available.
3. Prepare required documents including site plan, construction drawings, and any engineering calculations (see General Requirements).
4. Submit the completed application in person at City Hall, 1200 Main Street.
5. Pay the permit application/plan check fee at time of submittal.
6. City Building Department reviews the application for compliance with adopted codes (IBC/IRC) and city ordinances.
7. Applicant is notified of approval or requested corrections/additional information.
8. Once plans are approved, pay remaining permit fees.
9. Permit is issued; post the permit on site before beginning construction.
10. Schedule required inspections by calling the Building Department. Inspections must be scheduled in advance.
11. Complete all required inspections at the appropriate construction stages.
12. Final inspection and Certificate of Occupancy issued upon passing all inspections.
13. Separately obtain Wyoming state electrical permit from DWS Electrical for all electrical work; state electrical inspections are conducted by DWS inspectors.

Typical processing time: Not published; contact Building Department at 307-783-6320. Over-the-counter permits may be available for simple residential projects. Commercial plan review may take several weeks.

Source: City of Evanston Building Department

General Requirements

Building permits are required in Evanston for all new construction, additions, structural alterations, demolition, change of occupancy, and installation/replacement of mechanical equipment, plumbing systems, and HVAC systems. Fences over a certain height, retaining walls, decks, carports, accessory structures, and manufactured home placements typically also require permits. Contact the Building Department to confirm for your specific project.

Required Documents

• Completed building permit application form
• Two (2) sets of construction drawings (architectural, structural as needed)
• Site plan showing lot boundaries, proposed structure footprint, setbacks from property lines, existing structures, driveways, and utilities
• Foundation plan and structural details (especially for high snow load and seismic design requirements)
• Energy efficiency compliance documentation (confirm if city has adopted IECC)
• Contractor information (name, address, contact; Wyoming does not require GC license but city may require contractor registration)
• For commercial: full set of architectural and engineering drawings, fire suppression plans if applicable, mechanical/electrical/plumbing plans

Permit validity

Typically permits expire if construction does not commence within 180 days of issuance or if work is suspended for 180 days. Confirm current expiration policy with the Building Department.

Building code

Evanston has adopted building codes that include the International Building Code (IBC) and International Residential Code (IRC). Confirm the current edition year adopted (2015, 2018, or 2021 IBC/IRC) with the Building Department at 307-783-6320. Also confirm adoption of International Mechanical Code (IMC), International Plumbing Code (IPC) or Uniform Plumbing Code (UPC), International Energy Conservation Code (IECC), and International Fire Code (IFC). Wyoming State Electrical Code (NEC-based) applies statewide regardless of local code adoption.

Owner-builder

Wyoming does not require a general contractor license. Owner-builders may generally obtain their own permit. Contact the Building Department at 307-783-6320 to confirm any owner-builder affidavit or registration requirements specific to Evanston. Note: for electrical work, the homeowner must obtain a separate homeowner's electrical permit from Wyoming DWS if performing their own electrical work (confirm eligibility with DWS at 307-777-7261).

Contractor requirements

No Wyoming state general contractor license required. Evanston may require contractor registration or business license for contractors working in the city -- confirm with City Hall. Licensed electricians (Wyoming state license) and licensed plumbers must perform permitted trade work.

Fees

Plan check fee

Typically collected at application for plan review; remainder of permit fees collected at issuance.

Permit fee formula

Likely valuation-based for primary building permits, consistent with IBC Table 1-A or a locally adopted fee table. Separate trade permit fees (plumbing, mechanical) are typically flat fees by fixture count or work type. State electrical permit fees are set by Wyoming DWS and paid separately.

Payment note

Fees paid in person at City Hall. Contact Building Department for accepted payment methods.

Work That Does NOT Require a Permit

• Minor repairs and maintenance not affecting structural elements
• Replacement of like-for-like fixtures without structural or system changes
• Interior cosmetic work (paint, flooring, cabinets) not involving structural or system modifications

Important: Confirm specific exemptions with the Building Department as Evanston's local ordinance governs.

Inspections

How to Schedule

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Scheduling deadline

One business day advance notice typically required

Inspection hours

City Hall hours are generally Monday -- Friday, 8:00 AM -- 5:00 PM. Confirm current inspection scheduling availability with the Building Department.

Typical inspection sequence: Typical residential inspection sequence: (1) Footing/foundation inspection (before pouring concrete); (2) Underground plumbing/utilities (before backfill); (3) Framing inspection (rough framing complete, before insulation); (4) Rough mechanical, plumbing, and HVAC (before wall cover); (5) Insulation inspection (before drywall); (6) State electrical rough-in (scheduled separately with DWS); (7) State electrical final (scheduled separately with DWS); (8) Final building inspection; (9) Certificate of Occupancy issued by the city.

Additional Resources

• Building code: Evanston has adopted building codes that include the International Building Code (IBC) and International Residential Code (IRC). Confirm the current edition year adopted (2015, 2018, or 2021 IBC/IRC) with the Building Department at 307-783-6320. Also confirm adoption of International Mechanical Code (IMC), International Plumbing Code (IPC) or Uniform Plumbing Code (UPC), International Energy Conservation Code (IECC), and International Fire Code (IFC). Wyoming State Electrical Code (NEC-based) applies statewide regardless of local code adoption.
• Zoning information: View zoning info
• Wyoming DWS Electrical Section
• Wyoming State Fire Marshal
• FEMA Flood Map Service Center
• Wyoming SHPO
• License lookup guide: Wyoming Contractor License Requirements
• Contract template: Wyoming Homeowner-Contractor Agreement
• Wyoming hub: Wyoming Contractor License & Permit Hub

Frequently Asked Questions

Evanston Building Permit FAQ

Do I need a building permit in Evanston, WY?

Building permits are required in Evanston for all new construction, additions, structural alterations, demolition, change of occupancy, and installation/replacement of mechanical equipment, plumbing systems, and HVAC systems. Fences over a certain height, retaining walls, decks, carports, accessory structures, and manufactured home placements typically also require permits. Contact the Building Department to confirm for your specific project.

How much does a building permit cost in Evanston, WY?

Fees are calculated as: Likely valuation-based for primary building permits, consistent with IBC Table 1-A or a locally adopted fee table. Separate trade permit fees (plumbing, mechanical) are typically flat fees by fixture count or work type. State electrical permit fees are set by Wyoming DWS and paid separately.. Plan check fee: Typically collected at application for plan review; remainder of permit fees collected at issuance..

How do I apply for a building permit in Evanston, WY?

1. Contact the Evanston Building Department at 307-783-6320 before beginning any project to confirm permit requirements for your specific project type. 2. Obtain the appropriate building permit application form from the Building Department at City Hall or download from the city website if available. 3. Prepare required documents including site plan, construction drawings, and any engineering calculations (see General Requirements). 4. Submit the completed application in person at City Hall, 1200 Main Street. 5. Pay the permit application/plan check fee at time of submittal. 6. City Building Department reviews the application for compliance with adopted codes (IBC/IRC) and city ordinances. 7. Applicant is notified of approval or requested corrections/additional information. 8. Once plans are approved, pay remaining permit fees. 9. Permit is issued; post the permit on site before beginning construction. 10. Schedule required inspections by calling the Building Department. Inspections must be scheduled in advance. 11. Complete all required inspections at the appropriate construction stages. 12. Final inspection and Certificate of Occupancy issued upon passing all inspections. 13. Separately obtain Wyoming state electrical permit from DWS Electrical for all electrical work; state electrical inspections are conducted by DWS inspectors.

How long does it take to get a building permit in Evanston, WY?

Typical processing time is Not published; contact Building Department at 307-783-6320. Over-the-counter permits may be available for simple residential projects. Commercial plan review may take several weeks..

What work is exempt from building permits in Evanston, WY?

The following work is generally exempt: Minor repairs and maintenance not affecting structural elements; Replacement of like-for-like fixtures without structural or system changes; Interior cosmetic work (paint, flooring, cabinets) not involving structural or system modifications. Note: Confirm specific exemptions with the Building Department as Evanston's local ordinance governs.

How do I schedule a building inspection in Evanston, WY?

Inspections can be scheduled via: , , . One business day advance notice typically required.

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