Landscape Design
Landscape Design Services Tailored to Your Long Island Home
A Legacy Homeowners Have Trusted for Generations
Since 1976, Gary Duff Designs has transformed Long Island properties through landscape design that combines creativity, technical expertise, and family legacy. Known for intentional planning and architectural detail, our designs bring structure, balance, and artistry to every outdoor space, from concept to fully realized outdoor environments.
Signature Gary Duff Designs
Each design carries the same signature: clear vision, precise execution, and family-led integrity.
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Every detail has purpose; nothing is left to chance.
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The landscape feels like it belongs to the home.
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Decades of experience working with Long Island’s soil, climate, and neighborhoods.
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Our designers listen first, ensuring every plan reflects your goals and lifestyle.
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Every drawing considers how it will be built, not just how it looks.
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A Duff design enhances your property’s character and longevity.
Landscape Design That Defines the Outdoors
True landscape design begins long before a shovel hits the ground. It’s about understanding your home, your lifestyle, and how you want to live outdoors. Every design is intentional, connected, and personal.
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![Landscape design featuring layered planting design with evergreens, perennials, and stone walkways in Port Washington, NY]()
Planting Design
Balanced and sustainable arrangements that evolve beautifully over time.
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![Landscape design showcasing structured layouts with lawn transitions, fencing, and poolside flow in Babylon, NY]()
Landscape Layouts
Thoughtful flow, texture, and color for spaces that feel natural yet refined.
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![Front yard landscape design enhancing curb appeal with hydrangeas, lighting, and architectural balance in Brookville, NY]()
Front Yard Design
Curb appeal that matches the architecture and sets a lasting first impression.
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![Backyard landscaping with patio paths, outdoor seating areas, and privacy plantings in Melville, NY]()
Backyard Landscaping
Outdoor living spaces designed for gathering, privacy, and comfort.
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![Landscape design plans illustrating spatial flow, elevation changes, and long-term planting strategy in Stony Brook, NY]()
Landscape Plans
Detailed layouts that blend creativity with construction clarity.
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![Architectural landscaping featuring formal symmetry, water features, and structured garden spaces in Sands Point, NY]()
Architectural Landscaping
Structural elements and spatial design that unify the entire property.
OUR PROCESS
Our Design Process
Designing with Gary Duff Designs means working with a team that values communication and clarity as much as creativity.
Consult & Discover
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We start with a conversation about your home, goals, and style.
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Design & Plan
Our designers craft detailed concepts and landscape plans that balance aesthetics with practical build insight.
Refine & Build
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Once approved, our construction team brings your design to life with precision and care.
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Enjoy for Decades
The result is a fully realized outdoor environment designed to evolve beautifully over time.
See the Transformation
Where Our Craft Becomes Your Story
“A wonderful job turning my yard into a showcase in just a few short days! Gary’s vision for my property, that I wanted to remain as beachy, was just what I was looking for and he is a delight to work with. His crew is hard working, extremely efficient, and they took initiative to go beyond what was required in all phases of the project. I will absolutely use him for future projects and would assign many more stars if they were available.”
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— Mimi P., via Google
Guidance from Gary Duff Designs
Decades of experience have taught us a few things, here’s what most clients want to know before we start.
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Our design process goes far beyond basic layouts. We create comprehensive landscape plans that blend architecture, flow, and planting design, integrating hardscape, lighting, and natural elements into one cohesive vision.
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We’re a family-led design-build firm with fifty years of experience on Long Island. Every design is intentional and personal, crafted to complement your home’s architecture and built with the same integrity that defines our name.
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Absolutely. Whether you’re enhancing front yard curb appeal or transforming a backyard into a true outdoor living space, our team designs for how you live, balancing aesthetics, function, and comfort.
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After decades designing across Long Island’s varied landscapes, we know how to select plants, materials, and layouts that thrive in our coastal climate. Every planting plan and material choice is made to endure the seasons and complement your home’s setting.
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Each project is tailored to your property and scope, but select projects start at $10K. Whether you’re refining one space or creating a complete landscape plan, we bring the same care and design precision to every project.
Celebrating 50 Years of design excellence
50 Years of Designing Outdoor Spaces
10,000+ Projects That Transform How People Live.
Enhancing The Quality Of Life Through Landscape Design
For five decades, the Duff family has been redefining outdoor living across Long Island, one purposeful, beautifully built space at a time.