The SJB Advantage
While many subcontractors focus only on their piece of the project, we take ownership of the entire process.
Full-Scope Coverage
We deliver seamless coordination across preconstruction, concrete, precast, masonry, and site mix.
Risk Prevention & Planning
We work alongside you from the start to identify risks, optimize design, and prevent costly surprises before they happen.
Exceptional Service
We promise clear communication, quick responses, and reliable processes so you have one less headache to worry about.
Skilled & Invested Team
We invest in training, professional development, and safety, ensuring that our crew is always equipped to handle the demands of construction.
About SJB
SJB is a full-service precast, masonry, and concrete company in Montrose, MN, serving the commercial, agricultural, and industrial sectors.
Built on Craftsmanship
Founded by Steve Bunn in 2007, SJB was created as a destination for skilled craftspeople—a place where quality work and professional service take priority. His vision attracted a team of like-minded professionals, including his brother Mike Bunn, who joined in 2020 to expand SJB’s capabilities with precast manufacturing expertise.
Behind every structure we build is a team of dedicated craftspeople, estimators, and project managers who work tirelessly to deliver top-quality results.

Our words are backed by our actions. We demonstrate an unparalleled set of standards in our sense of urgency, prompt communication, and dedication to customer service.
We do what’s right, even when no one is looking. As an industry leader, we pursue the highest ethical standards in all aspects of our business.
We’re committed to growing individually and collectively. We believe that growth and innovation are necessary to survive; therefore, we grow through knowledge, skills, technology, and relationships.
We accept criticism as graciously as we accept compliments. Pride is concerned with who is right. Humility is concerned with what is right.
Our Team
At SJB, our strength lies in our people. From leadership to the field, every team member plays an important role in our success.

Steve Bunn
Owner
Steve's leadership ensures that SJB meets the highest ethical standards and fulfills his vision to create a destination workplace.

Mike Bunn
CEO
Mike leads our precast division, focusing on high-quality, precision-engineered construction solutions.

Jeb Butkovich
Estimator
Jeb manages project costs and budgets, ensuring accurate and competitive pricing for SJB's clients.

Greg Kaiser
Precast Plant Manager
Greg oversees precast production, prioritizing safety and efficiency to maintain high standards.