How much does interlock cost in Ottawa?
New interlock in Ottawa starts from $18 per square foot supplied and installed, plus HST. Most driveways, patios and walkways land between $21 and $25 per sq ft on a full new base. The $18 rate applies when a sound existing base can be reused, and premium pavers such as Permacon Melville run up to about $30 per sq ft.
For a full breakdown by service, see our interlock driveway installation, interlock patio, and interlock walkway pages, or get an instant estimate with our interlock price calculator.
Interlock Installation Prices in Ottawa
Supplied and installed, plus HST. Ranges come from our 2026 Ottawa quotes.
Interlock Driveway
From $18/sq ft
Most driveways run $21-$25/sq ft on a new 10-12 inch base, from $18 when the existing base can be reused. Edge restraints and polymeric sand included.
Interlock Patio
From $21/sq ft
Most backyard patios run $21-$24/sq ft, premium pavers up to about $30. Fire-pit and seat-wall options.
Interlock Walkway
From $18/sq ft
Front entry walks, garden paths and side walks, typically $18-$27/sq ft. Replacing an old walkway runs $20-$22/sq ft.
Interlock Cleaning & Sealing Prices in Ottawa
Keep your interlock looking new – cleaning, sealing and joint-sand pricing across Ottawa.
Sealing
From $1.50/sq ft
Most sealing jobs run $1.50-$2/sq ft. Water-based or hybrid sealer that locks in colour and protects joints.
Polymeric sand
From $2/sq ft
Full joint sand replacement to stop weeds and lock pavers together.
Pressure washing
From $1.40/sq ft
Pressure wash plus fresh G2 polymeric sand in the joints, in one price. Most jobs run $1.75-$2.25/sq ft.
Interlock Repair Prices in Ottawa
Lift-and-relay, step and spot-repair pricing for settled or damaged interlock, plus HST.
Lift and relay
From $6/sq ft
Large areas $6-$10/sq ft, small patches $15-$18/sq ft. Base re-levelled, pavers reset, new polymeric sand.
Steps
From $250/step
Step repair from $250 per step ($500 for two), a new step from $1,300, landing and stairs from $3,200.
Spot repair
From $400
Small repairs and trip-hazard fixes for a handful of pavers.
What affects your interlock price in Ottawa
- Paver brand and style – premium Techo-Bloc, Permacon and Unilock lines cost more than standard concrete pavers.
- Base depth – a proper 10-12 inch frost-proof base costs more up front but prevents heaving in Ottawa winters.
- Removal of the old surface – tearing out existing asphalt, concrete or interlock is quoted separately.
- Drainage and grading – re-sloping away from the foundation or adding drainage raises the total.
- Site access and size – tight urban lots and small jobs cost more per square foot; larger driveways cost less per square foot.
- Custom work – borders, curves, inlays, steps and lighting prep add to the price.
Interlock pricing FAQs
How much does an interlock driveway cost in Ottawa?
Ottawa interlock driveways start from $18 per square foot installed, plus HST. Most land between $21 and $25 per sq ft on a new base, so a typical 500 sq ft driveway runs about $10,500 to $12,500. Premium pavers push it toward $30 per sq ft.
Is interlock cheaper than concrete or asphalt?
Interlock costs more up front than asphalt and is comparable to stamped concrete, but it lasts longer, repairs easily (individual pavers lift and relay), and adds more resale value – so the lifetime cost is often lower.
How much does interlock cost per square foot?
In Ottawa, walkways and driveways start from $18/sq ft and patios from $21/sq ft, supplied and installed, plus HST. Most jobs land between $21 and $25/sq ft, and premium pavers run up to about $30.
Do you offer free quotes?
Yes. We measure on-site at no cost and email an itemized written quote within 24 hours. The quoted price does not move.
Why is there a price range instead of one price?
Paver choice, base depth, surface removal, drainage and site access all change the number. The free on-site measure pins it down precisely.
How much does it cost to extend or widen a driveway in Ottawa?
Interlock driveway extensions start from $21 per square foot, and most land between $21 and $25 per sq ft plus HST. A typical 100-250 sq ft widening lands between $2,100 and $6,500 plus HST. See interlock driveway extensions.
How much do interlock repairs, steps and walls cost?
Lift and relay starts from $6 per sq ft on larger areas and runs $15 to $18 per sq ft on small patches. Spot repairs start from $400, step repairs from $250 per step and a new step from $1,300. Retaining walls start from $30 per sq ft of wall face. Pressure washing with fresh polymeric sand starts from $1.40 per sq ft and sealing from $1.50 per sq ft. All prices are before HST.
Interlock pricing across Ottawa
These are city-wide ranges. Site access, lot size and soil conditions shift the number by neighbourhood, so check the page for your Ottawa service area too.
Prefer to talk? Call or text (613) 920-4558 – we reply the same business day.
Prices reviewed October 2026 from our 2026 Ottawa quotes. All prices are before HST.