HistoryA Family Owned and Licensed Excavating Contractor with over 40 Years of Experience Magnolia Excavating has been serving as a leading Boulder County excavating contractor since 1979. We're a team of fully certified professionals specializing in foundation, water and sewer lines, infrastructure, and right of way work.SpecialtiesMagnolia Excavating specializes in foundation, water and sewer lines, infrastructure, right of way work. We are a family business serving the Boulder County area for over 40 years.