What interlock & landscaping really cost in Ottawa (2026)

The honest answer: it depends far more on what goes under the pavers than on the pavers themselves. Two driveways with identical stone can be priced very differently — because one is sitting on a properly excavated, compacted base engineered for Ottawa's frost line, and the other is a resurfacing job waiting to heave.

When we price a driveway, the excavation depth, granular base build-up, and edge restraint system typically account for more of the cost than the surface you actually see. That's also the part that determines whether your driveway still looks right in year ten.

Patios have the widest price range of anything we build, because “patio” can mean a simple rectangle of pavers or a complete outdoor room with seating walls, a fire feature, lighting and an outdoor kitchen. The base preparation follows the same rules as a driveway — proper depth and compaction — scaled to foot traffic instead of vehicles.

The most useful way to think about patio cost: the surface is the foundation of the budget, and each built element (walls, steps, kitchen, fire pit) adds its own line. Phasing is common — many clients build the patio first and add features the following season, and we engineer the base so later phases drop in cleanly.

Walkways are usually the most affordable way to transform a property's first impression, and most are completed within two to three days. The same base principles apply as everywhere else — proper depth, compaction in lifts, edge restraints — just scaled to a lighter duty.

Steps change the math. Engineered steps need solid footings, correct rise-and-run, and slip-resistant finishes that stay safe through Ottawa ice seasons — they're priced as small structures, not as extra pavers.

Deck pricing splits into structure and surface. The structure — engineered footings below frost depth, framing, and hardware rated for Canadian weather — is priced by size and height. The surface is where cedar and composite diverge: cedar costs less up front, composite costs less over ten years once you count staining and maintenance.

Decks over 24 inches or attached to the house typically need a permit in Ottawa; we handle the drawings and the process, and that work is part of the quote — not a surprise afterward.

Retaining walls are engineering first, appearance second. A wall that holds a slope for decades needs the right block system, a compacted base, proper drainage behind the wall, and — above certain heights — engineered drawings. Cutting any of those corners is why other walls lean after a few springs.

Height is the dominant cost driver: taller walls need deeper bases, more drainage, and sometimes geogrid reinforcement tied back into the slope.