City Building Permits

Sammamish, WA Building Permit Guide

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

Washington King County Updated March 2026

Permit Authority

All properties within the incorporated City of Sammamish.

Department: Permit Center (Community Development)
Phone: 425-295-0540
Email: Planning@Sammamish.us
Website: https://www.sammamish.us/government/community-development/permit-center

Online Permit Portal

Open MyBuildingPermit.com

Platform: MyBuildingPermit.com • Account required: Yes • Submission: Online only

Additional resources:

Application Process

Access MyBuildingPermit.com (24/7)
Create account
Select Sammamish as jurisdiction
Complete online application forms
Upload PDF plans and documents
Pay submittal fees at application
City staff reviews application
Receive electronic permit upon approval
Pay issuance fees before permit release

Typical processing time: Varies by permit type.

Source: Permit Center (Community Development)

General Requirements

A building permit is required for most construction within the City of Sammamish.

Required Documents

Completed permit application
Site plan
Construction plans (PDF format)
Architectural plans

Permit validity: Varies by permit type.
Building code: 2021 Washington State Building Code
Contractor requirements: Contractors must hold a valid Washington State L&I registration.

Fees

Plan check fee: Submittal fees cover plan review
Payment note: Submittal fees at application (plan review); Issuance fees when approved (inspection and impact fees)

Fees change. Verify current amounts at the official fee schedule (effective Current).

Work That Does NOT Require a Permit

One-story detached accessory structures under 200 sq ft
Decks under 30 inches above grade
Fences under 8 feet in height
Retaining walls under 4 feet
Re-roofing
Window/door replacement in-kind

Important: See Tip Sheet 00 for complete list. Construction hours: Mon-Fri 7:00 AM-8:00 PM, Sat 9:00 AM-6:00 PM, no construction on Sundays/holidays.

Inspections

How to Schedule

MyBuildingPermit.com (online)
inspections@sammamish.us (email)

Inspection hours: Monday-Friday, 7:00 AM - 8:00 PM; Saturday 9:00 AM - 6:00 PM

Additional Resources

Building code: 2021 Washington State Building Code
Verify contractor license: WA L&I Contractor Lookup
MyBuildingPermit Tip Sheets
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 Permit Center (Community Development) 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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