Gary Duff Designs
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Gary Duff Designs
Since 1976, Gary Duff Designs has been designing and building custom elegant landscapes in Nassau and Suffolk counties. Our most important values continue to be providing personal service and high quality landscape design and construction. We believe that the smallest details make the biggest difference - from our communication all the way to every plant and stone we touch.

The most beautiful landscapes include variety in texture and color - all complementing one another as well as the home's architecture. From the front entrance to the backyard, regardless of the space we are transforming, you can trust our experience and passion with everything outdoor living related to create your holistic outdoor home.

We take great pride in every space we create and this is especially true when we are provided opportunities to give back to members in our community. Our current involvement includes landscaping projects with the Northport Veterans Affairs Hospital, Make-A-Wish Foundation, and Atlantis Marine World butterfly exhibit.
Services
After 4o years, Gary Duff Designs has continued to attain a quality of precision that has differentiated us from other Long Island landscape design & build companies. Our uniqueness lies in our ability to understand the needs of our clients and offer them creatively distinct environments. And because we do what we love, we take pride in giving back with organizations such as the Make-A-Wish Foundation.
Whether it's a retreat from long day at work, a party for 40, or a dip after hours, our swimming pools and spas are designed and built for comfort and beauty. We often start with understanding your expected use of the space as well as your home's architecture. The end result is a masterpiece that blends right into your landscape.
Plantings are the secret ingredient to a beautiful backyard, walkway, or front entrance. They brighten, soften, and bring all of the landscape elements together. Our approach to perfect planting design and installation considers the balance of maintenance, beauty, and privacy. We review expected foot traffic and options for sustainable plants - along with your overall style.
The outdoor kitchen is the center of your outdoor spaces. Similar to your interiors, it really is the heart of the outdoor home. You'll be serving drinks and grilling steaks + vegetables. Whether it's for an adults only gathering, a weekly family gathering space, or a party for one, it should be just as functional as it is beautiful.
Summers don't end at sunset. Driveways aren't only used during the day. Life often happens in later evening hours. Whether it's for safety, relaxing, or entertainment - outdoor lighting extends the usability of your spaces. From your beautiful trees, walkways, swimming pools driveways, and beyond, trust our outdoor lighting expertise to put that finishing touch.
Reviews (20)
Becky Tountas
Becky Tountas
Dec 20, 2021
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Positive: Quality
We had a great experience with Gary duff. The work was done quickly and came out great!
Service: Roadworks
Rose Romer
Rose Romer
Sep 20, 2021
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We hired Gary Duff to redesign our front yard 15 years ago and were very happy with the way everything turned out. When we decided to undertake a major backyard renovation this summer, we called him and asked him to come in to give us an estimate. We had some thoughts about how we wanted things to look, but he and his architect presented an entirely different layout, and while we were hesitant at first, we couldn't be happier that we followed their suggestions. Everything looks beautiful and the layout works well.
This is a family-owned and -run business and it shows. Gary and his sons, Adam and
Chris Olberding
Chris Olberding
Aug 24, 2021
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It was an absolute pleasure working with Gary and his team. Every question was answered and explained. Gary's vision produced a serene oasis for my family, especially the furry ones :-) They were professional, thorough, efficient and clean! I highly recommend Gary Duff Designs!
Mark & Priscilla Olberding
Robert Stenger
Robert Stenger
Aug 16, 2021
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Positive: Professionalism, Quality, Responsiveness, Value
Gary Duffs designs design the front of our home 21 years ago, he also did the our back yard, redoing our patio and adding a pond. The beautiful work he and his crew did has stood up and still catches our eyes every day. If you want the best we suggest you talk to him. Great person also!
Service: Design
Richard Trimble
Richard Trimble
Jul 19, 2021
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Gary Duff Design’s transformed our homes landscape from a hodgepodge to a beautifully executed landscape design. Their knowledge of the plant matter that works in the area and a keen sense of design that complements the home and natural features of the property work magic!
Throughout the project Gary visited the property every day to assure things were being done properly and fine tune the design as the plantings went in.
The material he brings to the project is of the highest quality which assures the grow out will yield a hardy mature landscape.
If you’re looking for a firm that will transform
Angela Vincenzo
Angela Vincenzo
Jul 14, 2021
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Positive: Professionalism, Punctuality, Responsiveness
Gary and has team were an absolute pleasure to work with. From designing our outdoor space to implementation, his team were professional, on time and the project was completed before the deadline originally given.
Services: Design, Roadworks
Ed A.
Ed A.
Aug 22, 2020
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We met Gary early in December of 2019 to review our backyard plans. We live in area with many elevations. Many contractors looked at our yard and said a pool was not possible. Not when Gary showed up. His design was impeccable. Gary was able to plan to space so we were able to make the best of the area and maintain our woodsy feel!!! It was nothing but a pleasure working with him and his and his crew. Keep up the great work.
Mike G.
Mike G.
May 27, 2020
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Terrible experience.

They built an outdoor bbq Island without safety ventilation. No apology. No self accountability.

They built a fire pit with huge gaps in the cinder blocks that needed to be destroyed and rebuilt. It was their first time it seemed.

They dragged dirt from rear yard to front yard and attempted to leave the huge pile on my front lawn. During this dirt drag dirt fell into my outdoor stair well and clogged my drain well. That night it rained and a mud filled my basement finished floor. No apology or self accountability.

They laid patio brick knowing it would rain and prevent
Brandi Odell Singaram
Brandi Odell Singaram
May 02, 2020
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We highly recommend Gary Duff Designs. Gary and his son Adam are always professional and courteous. They listened to what we wanted and helped us transform our overcrowded pool area to a beautiful outdoor space! They use quality materials and always deliver what they promise. We used them for our paver project as well as our landscaping and lighting and we will be using them once again for another home project! It is with great confidence that we highly recommend Gary Duff Designs. Brandi and Kumi
Denise Allen Ajamian
Denise Allen Ajamian
Apr 29, 2020
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Gary and his crew were amazing.I love my walkway and front porch.Beautiful job!!
Patti Waite
Patti Waite
Apr 23, 2020
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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.
Nick Nanos
Nick Nanos
Apr 23, 2020
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Gary's work has transformed our front yard. We had a great experience and would strongly recommend him. Fast efficient and beautiful!! Thank you Gary!!☯️☯️
Teresa Goett
Teresa Goett
Apr 22, 2020
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From the minute that we met with Gary and Adam, we knew that we were dealing with first rate professionals. Once we agreed on the scope of our project, the plans were executed exactly as outlined. The work was completed on time with a team of precision craftsman who are truly artisans. Along the way, as certain plan changes needed to be considered,… Gary and Adam outlined all available options and helped us consider all the pros and cons before making final decisions. We are thrilled with the beautiful work from Gary Duff Designs and wholeheartedly recommend them!
Richard Righi
Richard Righi
Oct 27, 2019
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I recently purchased my first home and reached out to for consultation on the yard and landscaping. Gary and Eric quickly came over, spending nearly four hours walking through the yard, discussing a variety of options with me, and ensuring they captured my thoughts on how I hope to use the yard in the future. They came up with… a vision that I would never have imagined!
Eric and the crew recently completed the first phase of work in my yard - they did a phenomenal job! Very respectful and professional, getting the job done in a timely manner. Communication with Eric was seamless throughout
Jami Beth
Jami Beth
Oct 16, 2019
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We had a great experience working with Adam. He personally came to our house before, during and after the project to make sure all was going well. He was clear in his presentation of what would be done to our yard, and his ideas were original and creative! We would highly recommend this company :)
Rich Righi
Rich Righi
Sep 04, 2019
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We have had numerous projects done over the years by Gary Duff Designs and will undoubtedly do more. They are by far the best in the business! Gary has a remarkable talent to envision ideas and plans in landscape design that incorporate both functionality and high-end design. He never disappoints! From start to finish it is always a smooth process, and his crew is always neat and courteous. We also have had the pleasure of working with his son Eric, who inherently has his dad's keen insights. We highly recommend Gary Duff Designs! - Rich and Kathy Righi
Carolyn Martin
Carolyn Martin
Jun 14, 2019
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Gary Duff designs is truly an amazing company that can come into your home or business and transform your landscape into more than you could have imagined. I have used them for years. Both on my home and my business properties. Very punctual crew and every day would clean up area before leaving. I would highly recommend Gary Duff and his sons.
Howard E. Greenberg
Howard E. Greenberg
Apr 25, 2018
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Gary and his crew including his talented and hardworking sons, Adam and Eric, have transformed our property into a tranquil and beautiful masterpiece.
When you work with someone you trust and has the vision of what you want coupled with the knowledge and expertise; the results are always amazing.
Lisa R.
Lisa R.
Oct 24, 2017
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I was hiring Gary Duff to redesign my backyard. The only restriction given to him is that design would not require the removal of any trees. I paid him $3000 for the drawings. When I mapped the drawings out in the backyard two large trees were right in the middle of the design. He never answered any of my emails and never returned a dime of the $3000.
Marge G.
Marge G.
May 19, 2014
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Worked with Gary Duff Designs on a backyard project last fall after damage from Superstorm Sandy devastated our yard. We couldn't be happier with the way it turned out. Gary was easily available by phone or email and came to the job daily to check on progress and work out any issues. His crew was professional and clean. Gary was very easy to work with and willingly and readily made changes when necessary. This past winter was so brutal and he promptly replaced specimens that did not survive. We highly recommend working with Gary Duff Designs.