CAD Resources

SPU, SDOT and Seattle Parks & Recreation Department only support 2023 Autodesk products. Consultants are required to use 2023 Autodesk software and meet the requirements as described in the SPU/SDOT CAD Requirements for Consultants document, linked below.

Existing consultant contracts already in place are not required to upgrade from 2020 to the 2023 release. However, we encourage you to upgrade with us so that we may better support your CAD related needs moving forward.

Any new consultant contracts, or work authorizations signed March 2023 or thereafter will be required to use the 2023 release.

We have created resources on this page for your use, such as CAD support files and the CAD Manual. Should you have any problems or questions using these files or our CAD Standards in general, please contact the SPU CAD Support Team at

SPU/SDOT CAD Requirements for Consultants

If you are performing computer-aided-drafting services for Seattle Public Utilities, Seattle Department of Transportation or Seattle Parks and Recreation you must adhere to the requirements in the following document:

SPU/SDOT CAD Requirements (PDF)

BIM Execution Plan

Download and edit the BIM Execution Plan template to document file formats, naming and numbering standards, roles and responsibilities, collaboration/clash detection/issue & markup tracking protocols, and more.

BIM Execution Plan (DOC)

Collaboration/Tracking with Autodesk BIM 360 (PDF) 

Standard Folder Structure (ZIP)

Drafting Criteria Guidelines

View the following documents to learn more about our drafting guidelines.

Custom Civil 3D Pull-Down Menu

A custom pull-down menu for AutoCAD Civil 3D is available.

Public Utilities

Andrew Lee, General Manager and CEO
Address: 700 5th Avenue, Suite 4900, Seattle, WA, 98104
Mailing Address: PO Box 34018, Seattle, WA, 98124-5177
Phone: (206) 684-3000

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Seattle Public Utilities (SPU) is comprised of three major direct-service providing utilities: the Water Utility, the Drainage and Wastewater Utility, and the Solid Waste Utility.