Designs by O’Neil & Associates is a full service landscape company providing Long Island landscaping designs, building and maintenance services, retaining walls building, paving and masonry services, swimming pool building and landscaping and more! Our team of landscape designers, swimming pool experts, contractors and masonry craftsmen, work together to provide a beautiful and customized landscape for your home. Designs By O’Neil & Associates is Long Island’s landscaping company that can turn your landscaping ideas into reality!