Interlock Driveway
Cost in Ottawa (2026)

An interlock driveway is one of the highest-impact upgrades you can make to an Ottawa property — it transforms curb appeal instantly and, unlike concrete or asphalt, actually holds up to our climate long-term. But before committing, most homeowners want a straight answer on price. Here's what interlock driveways are actually costing Ottawa homeowners in 2026, and what specifically drives the number up or down.

For the full picture on how interlock works and why it outperforms concrete and asphalt here, see our complete interlock guide.

What Drives Interlock Driveway Cost

• Square footage: The primary driver — a single-car driveway costs meaningfully less than a double-car driveway.
• Demolition scope: Removing an existing concrete slab or asphalt driveway adds labour and disposal cost versus a new install on bare ground.
• Base depth and site conditions: Poor drainage, soft subgrade, or a driveway that needs significant excavation adds to the base preparation work.
• Stone selection: Standard rectangular pavers cost less than premium large-format or tumbled stone options.
• Pattern complexity: Herringbone patterns and multi-colour borders take longer to lay than a simple running-bond layout.
• Grade changes: A sloped driveway that needs a retaining wall adds a separate line item to the project.

2026 Price Ranges

Rough installed price ranges for interlock in Ottawa this year:

• Standard interlock driveway (single car): $8,000–$14,000
• Standard interlock driveway (double car): $14,000–$24,000
• Interlock patio (200–300 sq ft): $6,000–$12,000
• Front walkway: $2,500–$6,000
• Retaining wall (per linear foot): $150–$300+

These figures assume standard rectangular pavers in a common laying pattern. Premium stone, intricate patterns, and significant demolition or excavation push toward the top of these ranges or above them.

Why Base Preparation Determines Cost — and Long-Term Value

The single biggest quality variable in an interlock quote is invisible once the job is done: the granular base underneath the stones. A properly excavated and compacted crushed-stone base (typically 10–12 inches for driveways) is what actually carries the weight of your vehicles through freeze-thaw cycles year after year. A contractor who skimps on base depth or compaction can offer a lower price, but that driveway will heave, settle unevenly, and need costly repairs within a few years — the "savings" evaporate fast.

When comparing quotes, don't just compare the bottom-line number. Ask each contractor to specify base depth and material, because that's where a cheap quote usually cuts corners.

Interlock vs. Concrete vs. Asphalt: Cost Over Time

Asphalt has the lowest upfront cost of the three, and poured concrete typically falls between asphalt and interlock. But both crack under Ottawa's freeze-thaw cycle within roughly 5–10 years, and repairs to concrete or asphalt are visible patches that never quite match the original surface. Interlock's individual stones flex with ground movement instead of cracking, and damaged sections can be lifted, the base re-graded, and the same stones relaid with no visible repair line. Factored over a 15–20 year ownership horizon, interlock's total cost of ownership is often lower than it first appears next to a cheaper asphalt quote.

Cost-Saving Tips Without Cutting Corners

• Choose standard rectangular pavers in a running-bond or basic herringbone pattern instead of premium large-format or multi-colour designs.
• Never cut the base depth to save money. This is the one place where a lower price should raise questions, not excitement.

Getting an Accurate Quote

A trustworthy interlock quote is detailed and specific, not a single per-square-foot number. It should specify base depth and material, stone brand and series, laying pattern, and the scope of demolition. AMA United installs interlock driveways, patios, and walkways across Ottawa — including Kanata, Orléans, and Barrhaven — with demolition and disposal included in every quote and a 2-year workmanship warranty on the finished work. See our full interlock services for recent project photos.

Comparing Multiple Quotes the Right Way

When two interlock quotes for the same driveway come back with a large price gap, the difference is almost always in what's not written down. Before comparing bottom-line numbers, check that both quotes include the same scope:

• Same base depth (a shallower base is cheaper but performs worse long-term).
• Demolition and disposal of the existing surface, if applicable.
• The actual stone brand and series, not just "pavers" — quality and price vary significantly between manufacturers.
• Edge restraints and polymeric sand specified explicitly, not assumed.

A lower quote that's silent on base depth isn't necessarily a better deal — it may simply be omitting the step that determines whether your driveway lasts 5 years or 30. Ask directly, and treat vague answers as a red flag rather than a convenience.

Phasing a Larger Project

If your ideal project includes a driveway, a front walkway, and a backyard patio, but the combined cost is more than your current budget allows, phasing is a reasonable approach — as long as each phase is done to full quality standards rather than compromising the base to fit a smaller budget. Most homeowners start with the driveway, since it has the most visible curb-appeal impact and the highest daily-use value, then add the patio or walkway in a following season.