Our Long Island landscaping company has been serving Nassau and Suffolk counties since the 1980’s. Designs by O’Neil & Associates has grown to be a full service landscape company offering complete designed and build landscape solutions.

Retaining walls: We specialize in building retaining walls to stop slope movement and erosion.

Long Island Masonry Service: From bricks to stone we are expert masons trust us for driveways, custom masonry BBQ ‘s & more

Poolscaping: We build custom inground pools in Long Island complete with water features. Set up a consultation with our swimming pool builder.

Landscape Design & Maintenance: We can help you with everything from regular lawn maintenance and care to complete design and build landscaping projects for your commercial or residential property.

Contact us for help with Long Island patios, masonry, paving, inground pools and landscape design. Call Long Island landscaping company Designs By O’Neil at 631-905-7960 or fill out our contact form to set up a free consultation with one our professional landscape designers.

Landscape Design Long Island, Designs By O’Neil |  Miller Place, NY 11764 | 631-444-4054 | designsbyoneil@yahoo.com

Elegant, Exquisite and Creative are some of the many words that can describe Designs by O’Neil & Associates. Since the 1980’s Designs by O’Neil & Associates has blossomed into a full – scope design organization. Starting out in a small rental office, the company has expanded into a multi acre development. In 1996 the multi – acre development has acquired an office, design & development staff and masonry supply depot to the construction division. Our work has been featured in several editions of House Magazine.

All of our nursery stock is grown on site. Our landscape division staff is here to monitor the proper growth of all plants, and to make sure proper sun light and nutrition are evenly distributed. To complement the basic hard scape and plantings we also install custom walkways, waterfalls, ponds, Bar-B-Que’s, Arbors & Benches, and other specialty features that can create a private escape from reality. Designs by O’Neil & Associates values green spaces and aims on raising customer’s awareness for natural environment through conscientious workmanship and prudent planning.