City Building Permits
Montesano, WA Building Permit Guide
How to apply for a building permit in Montesano, Washington. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
All properties within the incorporated City of Montesano.
- Department
- Building Department
- Address
- 112 N. Main St., Montesano, WA 98563
- Phone
- (360) 249-3021
- Website
- https://www.ci.montesano.wa.us/
Online Permit Portal
Platform: In-Person • Account required: No • Submission: In-person only
Application Process
- Obtain Building Permit Application form from City Hall
- Complete application with property owner information, project description, estimated construction cost, and contractor information
- Submit site plan and construction documents
- Pay permit fees
- Schedule inspections
Source: Building Department
General Requirements
A building permit is required for all construction within the City of Montesano.
Required Documents
- Building Permit Application form
- Property owner information
- Project description
- Estimated construction cost
- Contractor information
- Site plan and construction documents
- Building code
- International Building Code (IBC), International Residential Code (IRC) with Washington State amendments
- Contractor requirements
- Must be registered with Washington State L&I.
Fees
- Permit fee formula
- Based on project valuation or square footage
- Payment note
- Contact Building Department for current rates.
Work That Does NOT Require a Permit
Contact the Building Department to confirm whether your project requires a permit before starting work.
Inspections
How to Schedule
Typical inspection sequence: Inspections scheduled through Building Department. Final inspection required for Certificate of Occupancy.
Additional Resources
- Building code: International Building Code (IBC), International Residential Code (IRC) with Washington State amendments
- Verify contractor license: WA L&I Contractor Lookup
- License lookup guide: Washington Contractor License Requirements
- Contract template: Washington Homeowner-Contractor Agreement
- Washington hub: Washington Contractor License & Permit Hub
Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Building Department before applying.
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