City Building Permits

Mount Vernon, WA Building Permit Guide

How to apply for a building permit in Mount Vernon, Washington. Permit authority, application steps, fees, and inspection requirements.

Washington Skagit County Updated March 2026

Permit Authority

All properties within the incorporated City of Mount Vernon.

Department
City of Mount Vernon Development Services Department - Building Division
Address
910 Cleveland Ave, Mount Vernon, WA 98273
Phone
360-336-6214
Website
https://mountvernonwa.gov/1287/Building

Online Permit Portal

Open SmartGov Citizen Portal

Platform: SmartGov • Account required: Yes • Submission: Online only

Additional resources:

Application Process

  1. Create account on SmartGov portal at https://ci-mountvernon-wa.smartgovcommunity.com/
  2. Select appropriate permit type (Building, Engineering, Fire, or Planning)
  3. Upload required documents following electronic submittal requirements
  4. Pay fees online through portal
  5. Track permit status through portal dashboard
  6. Respond to comments or requests for additional information
  7. Request inspections online after permit issuance

Typical processing time: Residential Mechanical/Plumbing: Same day; Solar/Sign: First review within 2 weeks; Tenant Improvements/Single-Family/Duplex: First review within 4 weeks; Commercial/Multi-Family: First review within 4-6 weeks

Source: City of Mount Vernon Development Services Department - Building Division

General Requirements

Building permits required for all construction within City of Mount Vernon

Required Documents

  • Completed permit application
  • Site plan showing property location
  • Construction drawings (floor plans, elevations, sections)
  • Structural calculations for engineered elements
  • Energy code compliance documentation
  • Zoning compliance verification
Permit validity
Permits remain valid per SmartGov terms; contact department for expiration details
Building code
International Building Codes with Washington State amendments; 2021 Washington State Energy Code
Owner-builder
Property owner may perform certain work; verify requirements with Development Services
Contractor requirements
Washington State L&I contractor registration required; current contractor license and insurance required throughout project

Fees

Permit fee formula
Based on project valuation and permit type; see city website for current fee schedule
Payment note
Payment required at time of submittal for most permits through SmartGov portal

Fees change. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

  • One-story detached accessory structures 200 sq ft or less (planning permit still required)
  • Retaining walls not over 4 feet in height
  • Sidewalks and driveways (may require Engineering permit)
  • Water tanks less than 5,000 gallons
  • Painting, papering, tiling, carpeting, cabinets, countertops
  • Prefabricated swimming pools less than 30 inches deep
  • Playground equipment
  • Window awnings projecting less than 54 inches
  • Fences less than 7 feet (fence permit required)
  • Decks not more than 30 inches above grade
  • Residential re-roof with one existing layer, no decking repair
  • Window/door replacement in-kind
  • Electrical: Minor repair work including lamp replacement
  • Gas: Portable appliances, minor part replacement
  • Mechanical: Portable appliances, minor repairs, self-contained refrigeration

Important: Confirm specific exemptions apply to your project; some may require additional permits

Inspections

How to Schedule

Scheduling deadline
24 business hour response time for inspection requests
Inspection hours
Contact Development Services for current inspection hours

Typical inspection sequence: Inspection milestones printed on permit card; all work must be inspected and approved

Additional Resources

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the City of Mount Vernon Development Services Department - Building Division before applying.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.

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