Street Improvement Permits

When are Street Improvement Permits (SIPs) required?

The Street Improvement Permitting group builds on reviews done by our Development Review Program. There are two instances in which street-improvement permit are required:

  • Title 23 of Seattle Municipal Code dictates that certain types and sizes of development projects require that additional improvements be made to the right of way. These may involve direct improvements to the street, sidewalk, and/or planting strip, or installation of public utilities to serve the area.
  • Others choosing to voluntarily install street improvements will also need to obtain a SIP prior to improving the public right of way

Street Improvement Permits

When Title 23 requirements are triggered, required street improvements may include, but are not limited to, installations such as new street pavement panels, new sidewalks, or plantings.

Apply for a Street Improvement Permit

Download out Street Improvement permit application if you are ready to begin.

Depending on the stage of your SIP-related project, you may also need to access and submit the following materials:

Title Block Materials

Standard Notes

Other Plan Resources

The following client-assistance memos (CAMs) pertain to various specific SIP processes and project types:

CAM 2102 Certificate of Public Liability Property Damage Insurance

CAM 2200 Street Improvement Permitting (SIP) Process

CAM 2201 90% Complete Street Improvement Permit (SIP) Plan Requirements

CAM 2203 Dedication Requirements for Construction in Public Rights of Way

CAM 2204 Driveways and Curb Cuts

CAM 2205 Interpreting Pavement Opening and Restoration

CAM 2206 Interdepartmental Permit Coordination for New Construction Projects

CAM 2207 Skybridge Petition Checklist

CAM 2208 Sidewalk Repair

CAM 2209 Permitting Requirements for Street Improvements

CAM 2211 Street Improvement Permitting (SIP) Design Guidance

CAM 2212 Base Map and Survey Requirements for Street Improvement Permitting (SIP) Plans

CAM 2213 60% Complete Street Improvement Permit (SIP) Plan Approval

CAM 2214 90% Street Improvement Permitting (SIP) Plan Intake Appointment and 90% Complete SIP Acceptance Processes

CAM 2216 SDOT Street Improvement Permitting (SIP) Pre-Construction Process

CAM 2217 SDOT Street Improvement Permitting (SIP) Inspections

To access other CAMs that may assist you with your overall project, please visit our Street Use reference documents page.