Building with Purpose.
Delivering with Expertise.
Prospect Construction is a leading Heavy Civil Contractor specializing in complex water and wastewater treatment facilities and large-scale civil infrastructure. With decades of self-perform capability and deep technical experience, we approach every project with precision, integrity, and a commitment to true partnership.
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Founded in 1998 in Puyallup, Washington, Prospect has grown from its roots as a General Contractor into one of the Northwest’s premier treatment plant and civil infrastructure builders. Our success is driven by disciplined execution, problem-solving expertise, and a team united by our core values—Passion, Courage, Team, and Stewardship.
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As we’ve continued to expand our capabilities and impact, we’ve also broadened our geographic reach, now proudly serving communities throughout the Northwest and Mountain West with offices in Missoula, Montana and Sheridan, Wyoming.
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At Prospect Construction, we don’t just build projects—we build trust, relationships, and lasting infrastructure that strengthens the communities we serve.
Your Success is our Objective
At Prospect Construction, your goals define our direction. Every project benefits from the experience, knowledge, passion, and teamwork our people bring to the job. Our management and delivery philosophy—known industry-wide as “Partnering”—reflects our commitment to collaboration and integrity. We work fairly, honestly, and respectfully with Owners, Engineers, Subcontractors, and Suppliers, recognizing the essential contributions each makes to delivering a successful project. This approach is the cornerstone of how we build strong relationships and execute high-performing treatment plant and civil infrastructure projects across the region.
RECOMMENDATIONS
As the Project Manager for a 30 acre site, building over 150 home lots, I have been sincerely impressed with Prospect Construction and their team (Bryce, LJ, Matt and Ryan). They have been the most diligent contractor on my site, what they promise is what they deliver. So far, the work they have done has been nothing short of perfect and they pull out all of the stops to maintain their schedule, while staying under budget.
Jeff Kreckman, P.M. / The Preserve at Illahee Springs
In my career of over 32 years in the industry I have never worked with a more ethical, dedicated, detail-oriented and customer-focused group of professionals. They regularly went the extra mile to get the job done right and on time, and were very pleasant to work with in the process. I look forward to working with Prospect on future projects as often as possible and thank you for the success of the base-bid work at Picnic Point.
JOHN WRIGHT / SENIOR PROJECT ENGINEER / VANIR CONSTRUCTION MANAGEMENT, INC.
Prospect Construction was a great partner for a significant expansion of a Southwest Washington drinking water treatment plant. Their workmanship, speed, and responsiveness were great and I would readily use them again for a construction project.
PIERRE KWAN, PE, PENG / HDR