Gary Duff Designs

About

Since 1976, Gary Duff Designs has created elegant landscapes in Nassau and Suffolk counties. We specialize in landscape architecture, masonry, fiberglass pools, outdoor kitchens, fireplaces, patios, pergolas, cabanas, gazebos, and lighting. Our most important values are providing personal service and high-quality craftsmanship. We believe the smallest details make the biggest difference—from our communication to every plant and stone we touch. Serving Holbrook, Babylon, Brookville, Cold Spring Harbor, Deer Park, Dix Hills, Fort Salonga, Huntington, Lloyd Harbor, Manhasset, Mt. Sinai, Northport, Old Westbury, Oyster Bay, Port Jefferson, Port Washington, Sag Harbor, Sands Point, Stony Brook, Syosset, Smithtown, and other Long Island areas.