KCDL delivers high-fidelity legal basement construction and second unit legalization throughout North York’s suburban corridors, post-war bungalows, and upscale residential tracts. 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 Willowdale, converting a home near Downsview, or legalizing a unit in Don Mills, our owner-led project management ensures absolute compliance with City of Toronto building permits, strict parking bylaws, and long-lasting architectural finishes.