Retaining Walls & Stone Steps in Toronto and GTA
From guillotined armour stone to durable concrete retaining walls, we turn slopes into functional, beautiful outdoor spaces.
If patios are the floor of your outdoor living space, retaining walls and stone steps are the architecture that shapes it within a professionally designed backyard landscaping project.. They control elevation, manage soil pressure, and create usable outdoor spaces, while stone steps provide safe and smooth transitions between heights.
In cities like Toronto, Mississauga, Oakville, Burlington, and across the GTA, professional vertical hardscaping is essential for maximizing property value and long-term stability.
At Royal Decks and Landscapes, we don’t just stack stones-we engineer solutions. Whether you need to manage a steep slope or add depth to a flat garden, our approach combines structural integrity with refined design. We turn challenging grades into your property’s greatest asset.
Garden Curbs & Edging
The difference between a finished landscape and a messy one often comes down to the edges. Professional garden edging creates clean, defined lines that separate lawns, flower beds, and hardscaping while keeping mulch in place and grass out.
We install durable stone and concrete garden curbs that act as a permanent frame for your softscaping. This subtle detail creates a significant visual and functional impact.
- Visual Definition: Separates textures such as grass, mulch, and patio surfaces for a manicured look
- Reduced Maintenance: Prevents grass roots and soil from migrating into garden beds
- Material Options: From modern concrete curbing to rustic natural stone edging

Retaining Walls

A retaining wall is a powerhouse of hardscaping. It transforms unusable slopes into functional, level areas for stone patios, gardens, or pools. However, a poorly built wall can lead to costly failures. That is why we treat every project as a structural priority.
As part of our comprehensive landscaping services, retaining walls are often integrated with patios, grading, and landscape lighting systems.
As experienced retaining wall contractors, we specialize in:
- Precast Concrete Retaining Walls (Segmental): Built using engineered retaining wall blocks that allow for precise curves, corners, and strong load-bearing performance
- Natural Stone Walls: Ideal for homeowners seeking a timeless, organic look that blends seamlessly into the landscape
We manage engineering requirements, drainage planning, and construction details to ensure long-term stability and peace of mind.
Armour Stone Walls
For homeowners looking to make a bold statement, nothing compares to an armour stone wall. These massive natural limestone blocks bring the rugged beauty of Muskoka cottage country into urban backyards across Toronto and the GTA.
We specialize in guillotined armour stone, which is mechanically cut to create flatter top and bottom surfaces. This allows for tighter stacking, improved stability, and a cleaner, more contemporary appearance.
- Muskoka-Inspired Aesthetic: A premium natural look that pairs beautifully with pools and terraces
- Heavy-Duty Strength: Gravity-based stability using the natural weight of the stone
- Erosion Control: Ideal for stabilizing steep grades and challenging slopes
Stone Steps & Staircases
Your landscape should be a journey, and stone steps are the path. Whether it’s a grand front-entry staircase or subtle steps leading to a fire pit, safety and design must work together.
We offer several step solutions to match your style and budget:
- Natural Stone Steps: Thick solid stone slabs (typically 6–8 inches) for a bold, high-end finish
- Precast Concrete Steps: Uniform, durable steps offering consistency in size and a modern appearance
- Precast Stone Steps: A refined alternative that blends well with retaining walls
- Steps with Stone Veneer: We can also clad existing concrete stairs to create steps with stone veneer, refreshing the look of your old masonry.
We focus on safety by making sure rise-and-run measurements are consistent. We also add landscape lighting to keep your steps safe at night.

Considerations Before Building
Building vertical structures requires more technical planning than flat paving. Before breaking ground, consider:
- Drainage is King: The #1 enemy of a retaining wall is water pressure. We always install proper backfill and drainage pipes to manage Canadian freeze-thaw cycles.
- Material Choice: Do you prefer the crisp, uniform look of concrete retaining walls or the rugged, one-of-a-kind texture of armour stone?
- Permits & Engineering: In many GTA municipalities, walls over a certain height require engineering and permits, which we manage through our Planning & Permit Services.
- The “Landing”: The flat area at the top or bottom should be sufficiently spacious. This way, you can safely pause and open a door without stepping back.
Common Use Cases
When is vertical hardscaping necessary?
- Erosion Control: Stopping soil from washing away during heavy rainstorms to protect your foundation.
- Creating Usable Space: Leveling a hilly backyard to install a swimming pool, patio, or play area.
- Curb Appeal: Adding armour stone or a raised garden bed as part of a refined front yard landscaping design for a grand entrance.
- Safety: Replacing rotting wooden stairs with stable, illuminated natural stone steps.
Common Construction Mistakes (and How We Prevent Them)
- Ignoring the Foundation: Skimping on the aggregate base depth will lead to sinking and leaning within a few years.
- Incorrect Step Ratios: Steps with inconsistent heights (rise) or depths (run) are a major tripping hazard. Precision is non-negotiable.
- No Geogrid: For taller walls, “geogrid” mesh is required to anchor the wall blocks back into the soil. Skipping this leads to wall failure.
Investment & Value Notes
Vertical hardscaping is an investment in the structural integrity of your property; most retaining wall and stone step projects fall into a mid-to-high investment range due to excavation, base preparation, and drainage requirements
- Armour Stone Efficiency: Large stones may cost more, but they can be installed faster than small blocks. This can help balance labor costs.
- Concrete Durability: Precast concrete steps and walls often offer a cost-effective solution with excellent manufacturer warranties.
- ROI: A well-built retaining wall adds usable space to your yard. This can greatly increase your property value in the GTA real estate market.
Recent Retaining Wall Projects
Related Services
Complete your outdoor transformation by exploring our other services:
- Interlocking & Paving: Patios, walkways, and driveways.
- Custom Decks: Custom decks, pergolas, and privacy screens.
- Pools and Water Features: The centerpiece of your backyard oasis.
Service Areas
Royal Decks & Landscapes proudly provides retaining wall and stone step services across Toronto, Mississauga, Oakville, Burlington, Brampton, Milton, and throughout the Greater Toronto Area (GTA).
Why Choose Royal Decks & Landscapes?
Building vertical structures requires a higher level of technical skill than flat paving. Our clients trust us because we understand the engineering behind the beauty.
- Expert Grading & Drainage: Water management that protects your investment
- Heavy Equipment Capability: Proper machinery for safe armour stone placement
- Seamless Integration: Matching materials across walls, steps, patios, and paving
- Clean & Professional: Respect for your property and neighbors throughout construction
Ready to level up your landscape?
Don’t let a slope limit your outdoor potential. Let’s discuss how retaining walls and stone steps can elevate your complete backyard landscaping transformation.
Contact Royal Decks & Landscapes today to schedule your free consultation.
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