serving long island

Landscape Design

After 40 years, we call ourselves masters in designing beautiful, classic, and functional outdoor living spaces. From pools, patios, plantings, front entrances - and everything in between, we put our love and knowledge in every detail. It all starts with getting to know your style, your home's architecture, and your expected use. We then design a landscape that we know you'll love for decades to come.

Start Your Design Conversation

A backyard swimming pool surrounded by green grass, flower beds, and a black metal fence. There are red umbrellas and lounge chairs around the pool, with a house in the background and trees surrounding the area.

Where Our Craft Becomes Your Story

We had an unbelievable experience with Gary Duff Designs!!! They transformed our backyard into an ultimate outdoor living place. Designs ideas and layout were great and the overall outcome was impeccable. All the employees were well mannered and respectful. The project was carried out on schedule and in an orderly fashion. I would definitely recommend them to friends or family and I look forward to using them on future projects. Thanks again to Gary Duff designs and his crew for giving me my dream backyard oasis!!!

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— Anthony G. (via Google review)

Our Landscape Design Capabilities

Our craft is in bringing various capabilities into one, holistic landscape design and build project. Whether or not we're responsible for all of them, we always consider the impact of one to another. 

And because we do what we love, we take pride in giving back with organizations such as the Make-A-Wish Foundation.

A garden pathway made of stepping stones lined with colorful flowers and green plants, leading past a house with a stone exterior and an outdoor patio with black wicker furniture, during daytime.

Landscape Design That Defines the Outdoors

Outdoor patio area with wicker furniture, stone fireplace with a mounted TV, lanterns, and decorative bird figurines, with a white house and a shed in the background.
Outdoor kitchen with a stone island and bar, built-in grill, fridge, and seating area in a garden with flowering plants and trees.
A backyard with a rectangular swimming pool, white lounge chairs on a grassy area, and outdoor seating with sofas and chairs near a hedge. A modern pool chair float is in the pool, and a wooden deck is adjacent.
Backyard patio with a white pergola, stone wall, potted plants, outdoor furniture, and lush greenery.
Architectural landscaping integrating hardscape elements and plantings in Sands Point, NY
Gary Duff letters graphics

Where Our Craft Becomes Your Story

“We chose this company to design our entire backyard. Pool, patio, kitchen and other things. They far surpassed our expectations. They have a great work crew with wonderful attention to every last detail. We couldn’t have been happier throughout the entire process.”

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- Patti W. Via Facebook