Interlock project cost calculator
Pick the project type, set the size, and choose a finish – the estimate updates instantly using Ottawa pricing ranges.
Choose the project type, set the area, and pick a finish level. Your estimate updates instantly.
1. Select Project Type
2. Project Size
3. Material
Included in this estimate
- Concrete or designer pavers (per selected material)
- Granular A base, compacted in lifts
- Polymeric sand on every joint
- Edge restraint, full perimeter
- Site cleanup + final walkthrough
Might add to your final quote
- Sod or topsoil removal beyond ~6 inches deep
- Asphalt or concrete demolition + removal
- Drainage repairs (weeping tile, French drain, regrading)
- Retaining walls or steps beyond perimeter
- Excavation through clay, rock, or root mat
- Permit fees (rare; some Ottawa neighbourhoods)
What affects your interlock cost
Site grading
Slope, drainage, and base preparation impact labor hours.
Paver choice
Concrete, designer, or natural stone affect material cost.
Edge restraints
Proper restraints prevent shifting over Ottawa winters.
Access
Tight access and excavation removal add to project time.
Interlock Cost Per Square Foot in Ottawa
Based on this calculator, interlock projects range from $18 to $36 per square foot.
- Driveway: $20 to $35 per square foot
- Patio: $18 to $36 per square foot
- Walkway: $20 to $30 per square foot
- Driveway extension: $18 to $30 per square foot
The price depends on the project type, material, excavation, grading, drainage, base preparation, and site access.
Demolition, extra excavation, drainage repairs, retaining walls, and steps are priced separately.
Use the calculator above for a starting estimate. An on-site visit confirms the area, site conditions, and final quote.
How Much Does an Interlock Driveway Cost in Ottawa?
An interlock driveway in Ottawa costs $20 to $35 per square foot based on this calculator. A 600-square-foot driveway works out to about $12,000 to $21,000. An 850-square-foot driveway works out to about $17,000 to $29,750.
The final price depends on the paver, excavation, grading, drainage, base preparation, and site access. Removing an existing asphalt or concrete driveway adds to the cost.
The estimate includes the selected pavers, a compacted Granular A base, polymeric sand, edge restraints, cleanup, and a final walkthrough.
Extra excavation, drainage work, retaining walls, steps, and demolition are priced separately.
Use the calculator above for a starting estimate. An on-site visit confirms the measurements, drainage needs, access, and base conditions before the final quote.