As a trusted Westchester Excavation Contractor, Leonardi & Son Construction Inc. has served homeowners across Putnam, Westchester, Dutchess, and Orange Counties for over 40 years. The family-owned company specializes in septic system installation and repair, sewer connections, oil tank removal, and basement waterproofing. Led by owner Louis Leonardi, a Purdue-trained mechanical engineer, the team combines hands-on expertise with the latest industry technology on every project.