KCDL specializes in legal basement construction and second unit legalization throughout Oshawa’s traditional residential sectors, academic hubs, and expanding north-end subdivisions. With an engineering-driven approach, we execute complete apartment retrofits and multi-generational suites focused on structural integrity, efficient project coordination, and refined craftsmanship. Whether you're upgrading a home in Kedron, converting a property near Windfields, or legalizing a unit in Lakeview, our owner-led project management ensures absolute compliance with City of Oshawa zoning bylaws, seamless permit approval, and long-lasting architectural finishes.