Family-owned. Built over generations.

In 1960, at the age of 20, Dave Kolb founded Dave Kolb Grading with his wife Janet, after spending his life around heavy equipment on his family’s farm. Dave ran the crews and managed projects in the field, while Janet kept the books, managed the bank relationships, and built the back office. Together they spent the next five decades building a team, a base of repeat customers, and a reputation for trustworthiness and on-time delivery, doing what it took to do the job right the first time.

Their children grew up in the business, learning early about the five requirements of a successful business: integrity, excellence, trust, quality, and performance. Today, that generation is now at the helm, Janet is still deeply involved in day-to-day operations, and a third generation is carrying the legacy forward, hands-on and committed to every project.

Kolb’s emphasis on family isn’t just limited to that of the founder. Many of our employees have family ties of their own, adding to a culture built on commitment, long-term relationships, and trust. The result is a business with an outstanding safety and project completion record, and an eye toward the future.

People trust Kolb because they know where we came from — a family business that grew from local grading into a nationwide heavy-civil contractor without losing the values it started with.