Stirrett Johnsen, Inc. is a traditional mechanical contractor founded in 1972 by Lee Stirrett and Brian Johnsen. The company began in the plan/spec market competing statewide for Washington State K-12 education facilities and Military/Industrial work at the local shipyard in Bremerton. Based in Silverdale, Washington, the firm quickly developed a reputation as an efficient and quality-driven provider which soon led the founders to look at expanded markets and services.

In 1983, the company entered the design/build market adding in-house mechanical engineering, design and coordination capabilities. One of the first landmark projects in the design/build market was Bellevue Place in 1988. This 1,400,000 square-foot project was successfully designed and managed by SJI Mechanical Engineers Greg Swanson, P.E. and Rich Arper, P.E. with field supervision by Elgin Springgay, Larry Adams, Bruce Pearson, and Steve Sullivan.

Today, with 120 employees and an average revenue of over $30 million annually, Stirrett Johnsen is well known as a leading mechanical contractor in the region.

Sean Sullivan, Steve Stirrett, and Steve Sullivan lead an experienced staff with a combination of hard work, integrity, and passion for the trade. We compete vigorously in competitive bid, negotiated, design/build, and design assist delivery methods – across demanding markets such as healthcare, industrial, laboratory, military, and special projects.

Our five-acre home office facility in Silverdale has been expanded with a 9,800 square-foot, state-of-the-art fabrication facility. 2D and 3D modeling technology is utilized to pull man-hours from the field into this controlled, efficient environment saving our customers money and assisting other trades by reducing jobsite congestion.

Wayne Kisner continues to lead “SJI East”, our Yakima branch, dedicated to serving Healthcare and Industrial markets in Eastern Washington and Idaho. Stirrett Johnsen maintains a full time Local 598 staff in Eastern Washington and has done so for over 20 years. Reputation is everything in this market with repeat customers accounting for over 90% of our Eastern Washington business.

Greg Dehnert leads a streamlined Special Projects Division based in Renton, Washington. This flexible, high performance group is dedicated to serving Generals and Owners with demanding project needs. Often, these demands may include a crucial outage or working in occupied spaces with absolutely no room for error. Greg’s respected 20-year history of solid planning and budgeting, technical expertise and dedication is a perfect fit and complement to the needs of this customer group and our culture of dedication at Stirrett Johnsen.

We look forward to speaking with you to see if the specialized resources of Stirrett Johnsen may be the right fit for the mechanical needs of your next project.