Established in 1988, Gappsi Inc. offers home improvement services for indoor and outdoor facilities. Located in Smithtown, N.Y., the firm provides services in installation, building, maintaining swimming pools/spas, landscaping designs, custom carpentry and masonry services. Gappsi Inc. provides landscaping services include installation of water features, pondless waterfalls, pool waterfalls, outdoor lighting and fences. Its natural stone design includes installation of various paving stones, including granite, limestone, sandstone and tiles. Gappsi Inc. is licensed in areas of Suffolk County, Nassau County, Southampton and Five Buroughs. It also deals in installation of appliances/furniture and custom natural stone services.