Stone retaining walls are one of the most powerful features you can add to a landscape. When designed and built correctly, they do far more than hold back soil. A properly constructed retaining wall protects your property from erosion, manages drainage, creates usable outdoor space, and adds long-term beauty and value to your home.

At Louis Contino Landscaping Inc., we design and build stone retaining walls throughout Long Island for homeowners facing real site challenges—slopes, failing grades, drainage problems—as well as for those looking to elevate the overall design of their outdoor spaces. Many of our projects begin as a functional necessity and end up becoming one of the most striking design elements on the property.

This guide explains what stone retaining walls are, why they matter, how they should be built, and what homeowners need to know before investing in one.

What Is a Stone Retaining Wall?

A stone retaining wall is a structural landscape element designed to hold back soil and stabilize changes in elevation. Retaining walls are commonly used to:

• Prevent erosion on sloped properties
• Create level yard areas
• Support patios, driveways, and walkways
• Control drainage and redirect water
• Form terraced planting areas
• Protect foundations and hardscapes

Unlike decorative garden walls, retaining walls must resist significant soil and water pressure. That means they must be engineered, constructed, and drained properly to perform safely over time.

Why Retaining Walls Are Especially Important on Long Island

Long Island properties present unique challenges that make retaining walls a necessity rather than a luxury.

Common conditions include:

• Sloping lots and elevation changes
• Sandy or mixed soil types
• Coastal storms and heavy rainfall
• Older properties with failing grades
• Homes built into hillsides or near water

Without proper soil retention, these conditions can lead to erosion, yard collapse, water pooling, and even structural damage to nearby patios, walkways, or foundations.

A properly designed stone retaining wall stabilizes the landscape and protects everything built around it.

Function Comes First: Retaining Walls Are Structural

A retaining wall is a load-bearing structure. Its primary job is to resist the pressure of soil and water pushing against it.

When walls are built incorrectly—without proper base preparation or drainage—they often:

• Lean forward
• Crack or bulge
• Shift over time
• Fail completely

These failures are expensive to repair and often damage surrounding landscaping. That’s why retaining walls must be treated as structural elements, not decorative add-ons.

Drainage: The Most Critical Element of Any Retaining Wall

If there is one reason retaining walls fail, it is poor drainage.

Water trapped behind a wall creates hydrostatic pressure, which dramatically increases the load the wall must resist. Even the strongest stone wall will eventually fail if water is allowed to build up behind it.

At Louis Contino Landscaping Inc., every retaining wall we build includes:

• A deep, compacted crushed-stone base
• Drainage stone behind the wall
• Filter fabric to prevent soil migration
• Drainage pipe or weep systems when required

A wall that manages water properly can last decades. A wall that traps water will not.

Types of Stone Retaining Walls

Natural Stone Retaining Walls

Natural stone walls offer a timeless, high-end look that blends beautifully with Long Island landscapes.

Benefits:

• Organic, custom appearance
• Unique stone sizes and textures
• Excellent for estate and coastal properties

Considerations:

• Higher labor cost
• Requires skilled craftsmanship
• Longer installation time

Segmental / Engineered Stone Walls

These walls use manufactured stone units designed for structural consistency and strength.

Benefits:

• Uniform sizing
• Engineered for stability
• Faster installation
• Predictable performance

Considerations:

• More uniform, less organic look

We help homeowners select the right system based on function, aesthetics, budget, and site conditions.

Retaining Walls vs Decorative Garden Walls

Not all stone walls are retaining walls—and the difference matters.

A retaining wall holds back soil and requires:

• Structural base preparation
• Drainage systems
• Engineering in some cases

A garden wall is decorative and does not resist soil pressure.

Confusing the two can lead to:

• Structural failure
• Safety issues
• Costly repairs

Part of our job is ensuring the wall is designed correctly for its purpose.

Wall Height, Engineering, and Permits

On Long Island, retaining walls over certain heights may require:

• Engineering drawings
• Permits
• Inspections

Factors we evaluate include:

• Wall height
• Soil type
• Slope angle
• Distance to structures
• Drainage conditions

Handling these requirements correctly ensures your wall is safe, code-compliant, and built to last.

Retaining Walls and Drainage Work Together

Retaining walls rarely exist alone. They often work in combination with:

• French drains
• Dry wells
• Yard grading
• Catch basins

By integrating drainage into the wall design, we protect the entire property—not just the wall itself.

Design Benefits: More Than Just Holding Soil

Stone retaining walls add structure and character to a landscape.

They can:

• Create terraced gardens
• Define outdoor rooms
• Frame patios and pools
• Provide natural seating
• Increase curb appeal

When designed thoughtfully, retaining walls become architectural features that enhance the entire property.

Common Retaining Wall Problems We’re Called to Fix

Many homeowners contact us to repair or replace walls that were:

• Built without proper base depth
• Installed without drainage
• Constructed by inexperienced contractors
• Designed without understanding soil pressure

Signs of failure include:

• Leaning or bulging walls
• Cracks or separation
• Soil washing out
• Standing water

Addressing these issues early prevents more extensive damage later.

Why Professional Installation Matters

A stone retaining wall is not a DIY project.

Professional installation ensures:

• Proper excavation
• Correct base thickness
• Layered compaction
• Drainage integration
• Structural longevity

At Louis Contino Landscaping Inc., retaining walls are built with the same precision and care as any structural feature of your home.

Retaining Walls in New Construction vs Existing Landscapes

New Construction Projects

• Proper grading from the start
• Seamless integration into the landscape
• Prevents future drainage problems

Existing Landscapes

• Corrects years of erosion
• Stabilizes failing slopes
• Protects existing patios and plantings

Both scenarios require experience and careful planning.

Maintenance Expectations

A properly built stone retaining wall requires minimal maintenance.

We recommend:

• Occasional visual inspections
• Keeping drainage outlets clear
• Monitoring for soil movement

When built correctly, stone retaining walls can last for decades with little upkeep.

Why Homeowners Choose Louis Contino Landscaping Inc.

We don’t just build walls—we build long-term solutions.

Our approach focuses on:

• Structural integrity
• Drainage performance
• Aesthetic integration
• Long-term durability

We take pride in delivering retaining walls that protect your property and elevate your landscape design.

Final Thoughts: A Retaining Wall Is an Investment

Stone retaining walls provide:

• Erosion control
• Drainage management
• Structural support
• Enhanced outdoor spaces
• Increased property value

When designed and built correctly, they solve real problems while adding timeless beauty.

If you’re considering a stone retaining wall and want it done right the first time, Louis Contino Landscaping Inc. is here to help—from design through final installation.