K2 Construction, Inc. is a second-generation, locally owned commercial general contractor with more than 45 years of experience. Now led by owner Melanie Alderson, K2 continues the legacy started by her family while driving the company forward as a certified Woman-Owned Small Business (WOSB). Based in Boise and serving clients across Idaho and Oregon, we bring a balance of personal attention and proven systems that deliver every project confidently.
Founded on values of integrity, craftsmanship, and accountability, K2 Construction has grown from a small family operation into a trusted name in industrial, commercial, and institutional construction. Under Melanie’s leadership, K2 embraces those same principles while adopting modern practices to serve today’s complex projects. Clients can expect continuity of leadership, clarity in communication, and the assurance that every project is treated with long-term value in mind.
We are always competitively priced and focused on delivering the best value over the life of a facility, not just the lowest initial bid. That is why owners and developers across the region trust K2 to handle their most important investments.
Great buildings require strong teams. Inside our company, we invest in training, mentorship, and leadership development so our people bring their best to every project. On our jobsites, we partner with proven subcontractors and suppliers who share our commitment to quality and safety. This combination creates a collaborative environment where everyone is aligned toward delivering the best results for the client.
From advanced manufacturing facilities to institutional and community spaces, K2 Construction is helping shape the future of Idaho and Oregon. We remain committed to sustainable practices, efficient construction methods, and projects that provide long-term benefits to both owners and the communities they serve.
K2 Construction is more than a builder. We are a partner who provides clarity, accountability, and confidence from concept to closeout. As a certified Woman-Owned Small Business, we are proud to combine decades of proven experience with fresh leadership that is shaping the next chapter of our story.
Our experience includes:
60+ hotel projects, 50+ sit down and quick service restaurants, 80+ service stations, 15+ multi-family & assisted living projects, 70+ industrial (manufacturing & warehouse), 60+ office, unique facilities: event center, athletic facilities, airplane hanger, schools, and churches.
K2 has developed a reputation for solid construction and honest business practices, which has led to long standing relationships with both clients and subcontractors. Managing construction is more than just finishing on budget and on schedule.
Some of K2’s notable buildings and projects include: Grace Assisted Living, Swire Coca-Cola Facilities, Chateau des Fluers Event Center & Restaurant, Culver’s, Chipolte, and Popeye’s Restaurants, Western Trailers, AceCo Manufacturing, Dennis Dillon Auto Dealerships, over 60 hotel projects, and over 80 Chevron Stations across the US.
Licenses:
ID#RCE-1824; ID CM-132; OR#64679
WA#KTWOCI*137DZ; MT #13874
Trusted, Local, Expert Knowledge from a construction company that has earned a reputation that transcends generations.
Founded in June of 1980, K2 Construction, Inc. was started by Mark and Donna Kreizenbeck.
Founder, Mark Kreizenbeck earned his Electrical Engineering degree from the University of Idaho, and took a job with Bechtel Engineering, where he traveled the United States working on various power plants, in Virginia, Connecticut, Arizona, and California. During that time, he earned his MBA from University of Connecticut, got married, and eventually moved back home to Idaho, where he grew up.
Founder and wife of Mark, Donna Kreizenbeck managed the administrative side of the company as the Secretary/Treasurer of the company.
The Kreizenbeck’s daughter, Melanie, worked at K2 throughout high school and after completing her MBA at Western Washington University, moved to work with her parents in 2003. She learned the ropes from her dad and other project managers, and was promoted to Vice President in 2012. In addition to managing a wide range of commercial construction projects, she managed the company safety program, and was trained in Butler Building systems.
Our humble beginnings have served as the foundation for the growth and success of K2, now one of Boise’s top construction companies.
I chose to work with K2 because I appreciated them being forthcoming and genuine in the beginning. I felt comfortable and that our project had value. I continue to work with K2 because I trust that they will do the right thing.
After 4 projects, K2 has always provided us with professional construction management services with an eye on both costs and quality. We would not hesitate using them as General Contractors again and would recomend them to anyone!
K2’s attention to detail, quality, and safety is unparalleled. With their experience and leadership they methodically guided us through each stage of our project making the process both relatively effortless and pleasant. I recoment K2 Construction and their team!
