Team

Custom Structures of South Dakota

Meet our experienced team

Casey Wallum

President

Casey Wallum is the President of Custom Structures of SD, LLC and has been part of the Post Frame Industry since 2010. With a lifetime of experience in construction, Casey takes pride in delivering quality craftsmanship and dependable service on every project. His leadership is rooted in hard work, integrity, and a deep understanding of the building process. Outside of work, Casey enjoys coaching youth softball and baseball and spending time with his family at their many activities.

Jeremy Mayer

Vice President

Jeremy Mayer is a visionary leader and Vice President at Custom Structures. With several decades of specialized knowledge in the construction industry, Jeremy is an unparalleled expert in post-frame building. He provides strategic direction for all major projects, leveraging his deep technical expertise to ensure superior quality and innovation, and is instrumental in driving the company's success and expansion within the specialized post-frame market.

Amanda Ferguson

Office Manager

Amanda Ferguson is our dedicated and innovative office extraordinaire with a passion for customer service and numbers. With almost a decade of valuable experience in the field, she handles all office administration, including bookkeeping, client relations, and team support. When she's not crunching numbers, Amanda enjoys spending quality time on her family’s farm and doting on her beloved cats.

Robby Tryon

Project Manager

As Project Manager, I bring four years of dedicated experience to post-frame construction, ensuring every building project is completed efficiently and to the highest standard. This role is strongly supported by my 25+ years in the custom cabinet industry, which instilled a level of meticulous detail and quality control that I now apply to every phase of the build, from the foundation to the final finish. My commitment is to deliver precision in all aspects of the project.

Away from the job site, I value spending time with my family, as well as pursuing my passions for hunting and golf.

David Nelson

Salesman - North

David Nelson, originally from Aberdeen, South Dakota, began his building career in the 1970s as a residential builder. With decades of hands-on experience, David has developed a deep understanding of construction and design. His work with post-frame buildings dates back to 1981 and 1982, and since 2012, he has specialized in this versatile building style. Today, David combines his extensive background with a customer-first approach, helping clients design and build structures that perfectly fit their needs. Whether residential or post-frame, his commitment to quality craftsmanship and practical solutions ensures every project is built to last.

Dan Ridgway

Salesman - South

Caleb Poe

Shouse Salesman

With a lifetime of experience in a construction family, Caleb has dedicated the past year to specializing in post-frame building. He is deeply focused on the homeowner experience, leveraging an eye for detail to act as a trusted conduit in transforming your dreams into a tangible reality. When he's not on the job, Caleb is passionate about the outdoors, coaching youth hockey, and spending quality time with his family.

Luke Uhlir

Salesman - Yankton/Nebraska

Luke Uhlir is a dedicated salesman serving the Yankton, SD area, with seven years of experience in post-frame and pre-engineered steel frame buildings. Raised as a farm kid in Verdigre, NE, he truly understands rural needs and makes adding value to your land simple. Luke is your "easy button" for creating lasting legacies for future generations.

Kyle Munier

Salesman - Black Hills

Kyle Munier brings dedicated service and construction expertise to the team at Custom Structures of SD. Focused on client success, he is known for his commitment to quality and delivering reliable results on every project. Kyle ensures every client receives personalized service and a positive building experience. Outside of work, Kyle enjoys coaching AAU Wrestling and Football and spending time with his family.