Columbus General Contractors 6325 E 100 S Dunlap and Company has been a leader in the general and mechanical construction industry for over 130 years. Founded in 1873 as a lumber milling and planning supplier, Dunlap and Company was incorporated in 1924. Since 1976, under it's current ownership, the company has grown to be one of the oldest and most respected names in the construction industry. Columbus IN General Contractors Dunlap and Co Inc www.dunlapinc.com Dunlap columbus indiana mechanical contractors design building japan japanese associated general contractors mechanical contractors association of indiana american building company Dunlap columbus indiana mechanical contractors design building japan japanese associated general contractors mechanical contractors association of indiana american building company Business Reviews Dunlap and Co Inc Testimonials