Unparalleled excellence in craftsmanship.

Since 1977, Ganser Construction has been fulfilling the dreams of owning a beautiful, new, custom-built home and making it a reality.

Contemplating building a new home or possibly upgrading your existing home? Then rest assured you are in good hands with Ganser Construction. Our staff displays unparalleled excellence in craftsmanship, with the professionalism and skill it takes to build your dream home.

We are a family-oriented business. John Ganser grew up in large family learning early on what hard work was. Living on a dairy farm taught John that with blood, sweat, and tears dreams can come true. Upon graduation from high school, John went to work for a local building contractor in Wisconsin. He continued this work for a couple of years, during his spare time he built a new home for his growing family. In addition to building his own home, John built several homes on speculation. In 1977, John determined that he was ready to begin his own construction business. Plenty of talent, hard work, and long hours brought the dream of Ganser Construction, Inc. to a reality.

Quality Craftsmanship

Quality work is made possible with a brilliant and knowledgeable team.

From humble beginnings, the Ganser Construction team has grown to ten employees. This dedicated team has a combined 260 years of experience ranging from skilled framers, to finishers in the field, to a talented office staff. On average we build 10 – 12 homes per year in the Sauk City, Waunakee and greater Madison, Wisconsin area.

Meet the Team

What Customers Are Saying

We pride ourselves on high quality trim work, unique window design, and roof lines that enhance the exterior appearance.

“Ganser was wonderful in every stage of our home building process. We've worked with many other builders and none compare in quality, craftsmanship or relationship! We are so glad we found this home site and the best builders to make our retirement dream home possible.”

Jim & Lynn

“Thank you for your hard work, extremely professional, organized, efficient and personal way of making a potentially stressful life event enjoyable. ”

Doug & Jamie

“The experience we had building with Ganser was nothing but positive! We truly couldn't be happier. ”

Chris & Erin

“We are very happy with our home, the office help deserves a 10. They are great! We are very pleased with our experience with Ganser Construction. We have already recommended Ganser – to a close family member. Ganser's have given us special treatment, and we surely appreciate it.”

Jim & Peg

Our staff displays unparalleled excellence in craftsmanship and professionalism.


View the neighborhoods developed by Ganser Construction.  Have another home site in mind?  Don’t worry, we can build there too!

Why Ganser?

What makes Ganser Construction different from everyone else?