KCDL delivers precision legal basement construction and second unit legalization throughout Toronto’s high-density urban core, historic residential strips, and central neighborhoods. With an engineering-driven approach, we execute complex apartment retrofits and multi-generational suites focused on structural integrity, efficient project coordination, and refined craftsmanship. Whether you're upgrading a property in The Annex, converting a dwelling near Leslieville, or legalizing a unit in High Park, our owner-led project management ensures absolute compliance with City of Toronto zoning bylaws, seamless permit approval, and long-lasting architectural finishes.