
Custom Landscape Design & Construction Services in Nassau & Suffolk County, NY
Professional Landscape Design & Installation Across Long Island
View Our Portfolio: Landscape Designs Built for Long Island Homes
Complete Landscape Design, Planting, and Hardscape Services in Long Island
Gappsi is the leading Landscaping Designer and Construction Company on Long Island. We provide design and construction of custom landscape architecture and planting installation. From an initial consultation with a Gappsi designer, we offer complete 3D designs and manage and complete the installation of your landscape project. Gappsi provides topsoil grading, ground preparation, planting flowers, tree supply, fencing, irrigation, sod, seeding, hydroseeding, privacy fencings with evergreens, pottery, annual maintenance of plants, seasonal flower planting/mulching, natural water features, fountains, and swimming pool landscapes for both commercial and residential landscapes.
All Products & Services Gappsi Offers
Long Island’s Landscape Designer and Construction Experts!
Gappsi is the leading Landscaping Designer and Construction Company on Long Island. We provide design and construction of custom landscape architecture and planting installation. From an initial consultation with a Gappsi designer, we offer complete 3D designs and manage and complete the installation of your landscape project. Gappsi provides topsoil grading, ground preparation, planting flowers, tree supply, fencing, irrigation, sod, seeding, hydroseeding, privacy fencings with evergreens, pottery, annual maintenance of plants, seasonal flower planting/mulching, natural water features, fountains, and swimming pool landscapes for both commercial and residential landscapes.
Our planting material is personally selected and inspected by Joe Sorrenti before it gets delivered to our job sites. For small to medium backyards, we often use synthetic turf for the remaining lawn area to prevent landscapers and lawnmowers from having to access the backyard. This will keep your backyard clean and private with little to no weekly maintenance. We also offer landscaping design and construction services
You can view Gappsi’s YouTube channel for videos of our landscape designers and construction projects.
We also offer landscape design and construction in the following areas Eastern Long Island, Western Long, Island, North-Shore Long Island, South-Shore Long Island, Suffolk County, Nassau County, Glen Cove, Hempstead, North Hempstead, Oyster Bay, Babylon, Huntington, Islip, Smithtown, Brookhaven, Southampton, Riverhead, East Hampton, Southold, Old Brookville, Old Westbury, Mill Neck, Nissequogue, Lloyd Harbor, Muttontown, Coldspring Harbor, East Norwich and both Nassau and Suffolk County. In addition, Gappsi provides all the following products and services: Landscape Designing, Swimming pools, Home Remodeling, Sports Game Courts, Outdoor Appliances, Pavingstone Cleaning and Sealing, Holiday Lights, Epoxy Floors, Shrink Wrap Services, Landscape, Masonry, Natural Stone, Granite, Marble, Travertine, Limestone, Porcelain.
Frequently Asked Questions About Landscape Design & Construction on Long Island
Gappsi offers full-service landscape design and construction, including topsoil grading, ground preparation, planting, tree supply and installation, sod, seeding, hydroseeding, irrigation systems, privacy evergreen fencing, pottery and garden ornaments, seasonal flower planting and mulching, natural water features, koi ponds, rock waterfalls, and fountains. Services are available for residential and commercial properties across Nassau and Suffolk County.
Yes. Natural rock waterfalls, koi ponds, and custom water features are a specialty at Gappsi. Giuseppe Abbrancati’s team designs these features to look as natural as possible, using boulders and plants to blend them seamlessly into the surrounding landscape. These can be built as standalone features or integrated into a larger backyard design alongside a pool, patio, or pavilion.
Yes. For small to medium-sized backyards, Gappsi often recommends synthetic turf for the remaining lawn area after installing the patio and hardscape. This eliminates the need for landscapers and lawnmowers to access the backyard, keeping the space clean, private, and nearly maintenance-free year-round. Gappsi installs high-quality synthetic turf that looks and feels like natural grass.
All plant material is personally selected and inspected by Gappsi’s landscape specialist Joe Sorrenti before delivery to job sites. This ensures only healthy, well-grown specimens are installed in your project. Gappsi also offers annual plant maintenance programs, seasonal flower installation, and mulching services to keep plantings looking their best after the project is complete.
Yes. Irrigation system design and installation is available as part of any landscaping project. Proper irrigation is critical to protecting the investment in your planting material, especially for new trees, shrubs, and sod. Gappsi coordinates irrigation installation with the overall project timeline to minimize disruption and ensure proper coverage.
Yes. Gappsi provides complete 3D landscape designs from an initial consultation so you can visualize the finished project before construction begins. The design process considers the overall architecture of your home, existing hardscape, sun exposure, privacy needs, and maintenance preferences. Gappsi manages and completes the full installation of the approved design.

















