Team

Data Elements: Team.aspx

Sean Barquist

Project Manager

Sean Barquist has been an integral part of the Corstone team since 2004. He is Certified LEED AP and has worked on a range of projects for Corstone including retail, restaurant, and multifamily. He began his career in construction over 30 years ago out in the field where he developed a great understanding of civil work.

Sean is proud of the relationships he has developed with many of Corstone's repeat customers. He strives to bring quality to all of this projects with an attention to detail. When Sean isn't tending to his jobs and customers, you'll find in the great outdoors camping and hiking or traveling to tropical destinations with his wife.

Steve Foust

Project Manager

Steve grew up in the construction industry and quickly moved into management and leadership roles throughout his career. Over the last 40 years, Steve has held numerous roles including business owner, Division Manager of Special Projects and Project Manager. He has established an outstanding track record through successful completion of projects throughout the Pacific Northwest. As Project Manager, he draws upon this success with a commitment to quality for all of his projects.

One of Steve's passions is mentoring teams and helping those around him grow their careers in the construction industry. Steve enjoys spending time with his wife, kids and dog Cooper. He loves to travel, waterski, snow ski and wine taste throughout Washington.

Ali Tapert

Project Manager

Ali Tapert has held multiple positions within the organization and understands the full scope required to put together a project. Her ability to be creative and provide innovative approaches and solutions on a project-by-project basis allows her to identify, adapt and resolve complex issuesand find solutions to problems as they arise.

Ali enjoys taking her 80 lb German Shepard, Bruce, to the dog park and spending time with her family and friends. When she's not in the office, you can find her traveling, working out, wine tasting or cheering on one of the local sports teams.


Ryan Holmes
Estimator & Project Engineer