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About Karst Builders

Carl 'Jack' and Jason KarstA quality home can be built only with experience, fine materials, and an uncompromising commitment to excellence.   With 41 years in the building business, we have learned that the most important ingredients in any home are pride of craftsmanship, quality materials and knowledge of the building process.

Carl "Jack" Karst started building homes in 1964.   At a very young age Jason Karst decided to follow his father's footsteps.   For the last 13 years Jason has been working side by side with his father.

Karst Builders has expanded to offer other special services over the years.   In 1982, Jack started to design and build custom kitchen and bath cabinetry.   In 1997, Jack and Jason expanded into manufacturing and installing seamless steel siding and seamless gutters to enhance the exterior of their homes.

Jack, Jason and their employees, along with their subcontractors and material suppliers, work together to produce an affordable quality custom home.   Whether it is an oasis of solitude or a gathering place for friends, a Karst Builders' home will reflect the many sides of you.

Thank you for taking the time to view our website.

Please take a moment to view our Mission Statement.

For Free Estimates Call: 920.921.1906 (Fond du Lac Area) or 920.233.6000 (Oshkosh Area)
You can contact us via Fax at 920.921.8130 or through our website with our Contact Us form page.


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Karst Builders, Inc.
N6759 Karst Drive
Eldorado, WI 54932

Karst Builders, Inc.

Phone: 920.921.1906
Phone: 920.233.6000
Fax: 920.921.8130


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