Armour stone has become one of the defining elements of upscale Toronto landscaping — and for good reason. It’s versatile, durable, and handles Toronto’s climate extremely well. Here’s what homeowners need to know.
What Is Armour Stone?
Armour stone refers to large-format natural stone blocks (typically limestone or granite) used for retaining walls, steps, edging, and landscape features. The name comes from its use in shoreline protection (“armour” against erosion), but it’s found in residential landscaping across the GTA.
Why It Works in Toronto
- Freeze-thaw resistant (no mortar joints to crack and fail)
- Extremely durable — armour stone installed 20 years ago looks the same today
- Works with Toronto’s clay soils (natural drainage around stone is better than poured walls)
- Complements interlock and flagstone beautifully
Common Applications
- Retaining walls: Hold grade changes in rear or front yards
- Garden wall and raised beds: Define planting areas with a premium look
- Steps: Natural stone steps from driveway to front door
- Pool surround accent walls: Particularly popular in Vaughan and Mississauga
- Fire pit surrounds: Armour stone makes excellent fire pit bases and surrounds
Cost in Toronto (2026)
- Armour stone retaining wall: $200–$400 per linear foot (price varies with height and accessibility)
- Armour stone steps: $600–$1,500 per step (larger stones cost more but look better)
- Delivered and placed stone: $350–$600/tonne
LF Builders (lfbuilders.ca) works with armour stone throughout the GTA. See project examples at home.renovation.reviews.