KSJ Contracting is an Ottawa interlock and hardscaping company serving Ottawa, Nepean, Kanata, Barrhaven, Orleans, Gloucester, and Stittsville. We design and build interlock patios, driveways, and walkways, retaining walls, sod and softscaping, drainage and grading, and fencing, plus parging and foundation waterproofing. Every project is backed by a 5-year written workmanship warranty, free 3D design on signing, and flexible financing. As a BBB accredited, WSIB compliant, Techo-Pro certified contractor and Landscape Ontario member, we build outdoor spaces that last. Call 613-404-7742 for a free estimate. Imagine it. Design it. Live it.