• Major Commercial Project Permit

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    Permit for construction of a new commercial or multifamily building or addition, 4,000 square feet or more, which does not require SEPA review or SEPA review has been done under a prior land use approval. The permit includes demolition work when appropriate. (BB)

    When applying for a Major Project Building Permit, you must apply for a Clearing & Grading Permit (GD) and submit a Utilities Extension Agreement (UE) at the same time or before submittal of the building permit. A Smoke Control Permit (FH) and Conceptual Smoke Control Submittal document must be approved prior to submittal of the building permit.

    Apply for this permit online through MyBuildingPermit

    Required Documents

    The documents listed below are the minimum necessary to proceed with the application process. If you believe that a required submittal document does not apply to your project, please upload the Document Waiver Form in place of the required document. 

    For assistance with electronic plan submittals, refer to Requirements for Electronic Plans

    Additional Documents

    These items may be required during plan review, as determined by the scope of your project.

    • King County Health Department Approval
      • Required for projects that involve restaurants, delicatessens, commercial kitchens, hospitals, nursing homes, and public and semi-public pools and spas or if the building is served by a septic system. During review, submit your approval in the form of a letter or a stamped plan from the King County Health Department.
    • Multifamily Checklist
    • Previous Environmental Review
    • Road Plan
    • School District Impact Fee Form
      • Issaquah and Renton School Districts
    • Street Lighting Plan

    Fees and Timelines