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Gary Duff Designs

Gary Duff Designs

Gary Duff Designs is a premier landscape design-build firm specializing in master-planned estate transformations across Long Island. Since 1976, we have provided a single point of accountability for luxury outdoor living, from initial property conceptualization to the meticulous installation of fiberglass pools, custom masonry, and resort-style amenities. Show more

Gary Duff Designs is a premier landscape design-build firm specializing in master-planned estate transformations across Long Island. Since 1976, we have provided a single point of accountability for luxury outdoor living, from initial property conceptualization to the meticulous installation of fiberglass pools, custom masonry, and resort-style amenities.

Serving Nassau and Suffolk counties—including Dix Hills and Huntington—our expertise includes custom poolscapes, outdoor kitchens, fire features, pavilions, and cabanas. We are based in Holbrook and take pride in turning Long Island backyards into world-class private retreats.
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Cathy C.

Review of Rhino Shield of New England by

· Norwalk

great hard working crew and helpful office team . .. the final appearance of the color and paint look was good. .if the appearance holds-up for as long as expected it is worth the investment

Richard M.

Review of Advanced Cleaning and Restoration, Inc. by

· Lk Hopatcong

They were fabulous!

Brian D.

Review of A.J. Perri (Service) by

· Colonia

One of the best companies I have ever had do work for me - OUTSTANDING!

Carole S.

Review of Kohler Bathroom Design Service by

· Little Falls

The design service was extremely helpful in designing our bathroom update. We had some ideas about what we wanted and the process our designer used to help her understand our tastes helped her but also helped us to see the options available and better think through what we wanted and what could wor... more


I just got leaf filter gutter guards, steel mesh, 2 months ago. Now that it's fall there are leaves piled up on top, stuck with rain, etc. What to do?

Corey Sherman answered:

Dec 28, 2019
Introducing the World's first and only FLIPPING Gutter Guard Prtoection system - a solution that revolutionize the home improvement industry -  UnclutterGutter™ FLIPS Leaves & Debris AWAY! Stay ... read more
what is the best way to keep flying insects (wasp, bees, hornets) from entering your roof eaves vents? There's screen but not small enough to keep them out.

Gladys Meyer answered:

Sep 20, 2018
This is very effective.

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Gary Duff Designs

487 Furrows Road,
Holbrook, NY
https://www.garyduffdesigns.com/ (631) 737-4229