About Us

After 37 years of engineering service, we’ve decided to close Ellisport Engineering, Inc. (EE), effective December 31, 2025.  This was a difficult decision, as we’ve enjoyed providing engineering services to our clients and community. However, please be reassured that we have worked to find an alternative so our EE professionals may continue supporting your project.  Over the last 15 years, we’ve teamed closely with Leon Environmental, LLC (L-E) on many successful projects.  The L-E team has earned our trust and respect.  We consider them to be one of the premier environmental consulting firms in Washington State.  To continue offering you engineering support, we have reached an agreement for our staff to join L-E as employees who will form the start of L-E’s in-house engineering department. 

Ellisport Engineering, Inc. is a Vashon Island, Washington-based, Civil/Structural Engineering Company, serving Western Washington and areas beyond .  We currently hold active professional engineering licenses in WA and CA .  Some of the services our engineering company can provide you are engineering for your yurt, structural calculations for building designs, additions and remodels, forensic/investigative engineering, Floodplain Base Flood Elevation designations and landslide mitigation work. The engineering company was founded in 1987 and continues to provide professional, personal and punctual engineering services for our residential and commercial clients.