
Long Island's Premier Custom Gunite, Vinyl, and Fiberglass Pool Designer & Builder
A pool is more than just a place to swim, it’s the centerpiece of your outdoor sanctuary. At Gappsi, we specialize in high-end pool construction tailored to your landscape. Our 3-step design process ensures your new Gunite, Vinyl, or Fiberglass pool is functional, elegant, and built to last a lifetime.
Trusted Backyard Swimming Pool Design & Construction in Nassau & Suffolk County
Project Portfolio: Swimming Pool Designs Built Across Long Island, NY
Complete Swimming Pool & Backyard Entertainment Spaces for Long Island Homes
We provide design services, to help you create the pool area of your dream. We follow three principles: the order of making your design first of all functional, then it must be cost effective and then elegant, to create your custom Gunite, Vinyl, and Fiberglass swimming pools area. We offer many types of stone materials for your pool surroundings, all displayed at our showroom. We offer porcelain ceramics, glass tile and natural stone pavers and different finishes of plaster, including white, gray, and black marble dust, quartz diamond brite, glass,hydrazzo pool finish and stone pebbles. We offer many options of equipment, such as Salt Chlorine generators, ozone systems, gas heaters, heat pumps, LED lighting, DE, Cartridge and sand filters, diving board, slides, winter mesh covers, and solar Safety auto-covers.Some of the main equipment that we sale are: Pentair. Hayward, Raypak, Autopilot, Jandy, Stai-Rite, Dolphin, Waterways, Badu Jet. and Fastlane. Our goal is to help you prevent mistakes and explore all options before you start your project.
All Products & Design Services Gappsi Offers
Our swimming pools company offers swimming pool Design services 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 Swimming Pools on Long Island
Gappsi designs and builds three types of inground pools for Long Island homeowners: gunite (concrete), vinyl liner, and fiberglass. Gunite pools are the most customizable; they can be built in virtually any shape or size and are ideal for high-end, one-of-a-kind designs. Vinyl liner pools offer a smooth, comfortable surface at a lower upfront cost, while fiberglass pools are a faster-installation option with a low-maintenance finish. During your consultation, Giuseppe Abbrancati will help you evaluate which type best fits your yard, budget, and long-term goals.
Timeline varies depending on pool type and project scope. A gunite pool typically takes 8 to 14 weeks from permit approval to completion, depending on the complexity of the design, weather, and municipality. Vinyl-liner pools can sometimes be completed more quickly, in about 6 to 10 weeks. Permit processing time in Nassau and Suffolk County adds additional time before construction can begin, typically 3 to 6 weeks, depending on the town. Gappsi handles the permitting process on your behalf and keeps you informed throughout.
Gappsi offers a wide range of interior plaster finishes to suit different aesthetics and budgets. Options include traditional white plaster, gray and black marble dust plaster, quartz (Diamond Brite), glass bead finishes, Hydrazzo, and natural stone pebble finishes. Each finish varies in texture, appearance, durability, and price. Pebble and quartz finishes generally last longer and resist staining better than standard white plaster. All finish samples are on display at the Gappsi showroom in Smithtown, NY, so you can see and touch them before making a decision.
Gappsi offers an extensive selection of coping and patio materials, all viewable at their Smithtown showroom. Options include natural stone (bluestone, limestone, travertine, granite, marble), porcelain pavers, and concrete paving stones. Natural bluestone is a popular choice on Long Island due to its durability and classic look. Porcelain offers a modern aesthetic with very low maintenance. Gappsi also imports natural stone directly, which means a wider selection and more competitive pricing than most local contractors.
Gappsi works with the leading pool equipment manufacturers, including Pentair, Hayward, Jandy, Raypak, Autopilot, Sta-Rite, and Waterways. Equipment options include saltwater chlorine generators, ozone sanitation systems, gas heaters, heat pumps, LED lighting, automatic safety covers, solar covers, diving boards, water slides, DE and cartridge filters, and Fastlane lap swim systems. Gappsi will walk you through every option during the design phase so you can make informed choices that match how you plan to use your pool.
Yes, Gappsi manages the permit process for pool installations across Nassau County, Suffolk County, Southampton, and the surrounding townships. Gappsi is fully licensed in all these jurisdictions, Suffolk County license 27543-H1, Nassau County H2209100000, Southampton L002384, and is familiar with the specific requirements of each municipality. This includes zoning setback requirements, fence and barrier regulations, and inspection scheduling. Navigating permits is one of the more confusing parts of a pool project for homeowners, and Gappsi handles it as part of the full-service process.
Yes, and this is one of Gappsi’s core strengths. As a full-service outdoor construction company, Gappsi can design and build your pool, along with patios, masonry walls, outdoor kitchens, pavilions, pergolas, landscape plantings, fencing, synthetic turf, and sports courts. Managing all trades under one company leads to a more cohesive design, eliminates coordination problems between contractors, and often results in better overall value. Gappsi can present a complete backyard master plan before any construction begins.
Yes, Gappsi offers financing options for pool and home improvement projects. Financing allows you to get started on your project without paying the full cost up front. You can visit gappsi.com/financing for current program details, or ask during your consultation. Gappsi can also help you understand what a realistic pool budget looks like for your yard size, design goals, and material selections before you commit to anything.

















