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About Us

About Gappsi Inc. Gappsi, Inc. is an all-inclusive one-stop solution general contracting company for all your home improvement needs. We service clients in Nassau and Suffolk County, Long Island NY. Our showroom is located at 1015 W Jericho Turnpike, Smithtown, NY 11787. Our retail store displays: natural stones and porcelain pavers, outdoor kitchen appliance by: Twin Eagle, Delta, Summit outdoor-rated refrigerators, and Fontana gas and wood-burning pizza ovens. We provide design and construction on the following services: natural stones and porcelain pavers, swimming pools, sports game courts, pavilions, gazebos, & pergolas for the home, cleaning & sealing pavers, home remodeling, masonry, outdoor ovens and custom ovens, playgrounds, landscaping, & turf installation. Our talented and well-experienced personnel will help you make the right decisions by providing you with professional suggestions, functional design ideas, and high-quality finished products. Contact us today for more information! Gappsi can also help you get 100% financing for your projects on any of the home improvement services Gappsi offers and get it approved within 24 hours. Gappsi Inc. has been providing home improvement services and making homes more beautiful for residents of Long Island NY, since 1987. We are licensed and insured on Long Island, NYC, and the 5 boroughs of New York. We pride ourselves in offering premium home services while providing top-notch personal service. Our Mission: We have spent the past 32 years building a brand that stands for customer service, high-quality products, durable installation, functional award-winning designs, and a long list of happy customers. We will continue in the future following these same principles that have made us successful and proud. Gappsi Savings: By allowing Gappsi to design and build your new home improvement project, you will save a lot of your valuable time, hard-earned money, and physical/mental energy. Let the professionals at Gappsi handle the construction of your new home improvement project without the stress of unforeseen hidden costs and quality work. Gappsi Motto: At Gappsi we build our reputation one customer at a time. Our business is generated from our client referrals. When our past customers need our help, we take that as an opportunity to reconnect with old friends and broaden our referrals.

Services Provided

Attic Restoration, Basement Remodeling, Bathroom Remodeling, Brick Masonry, Brick Siding, Chimney Construction, Concrete Construction, Concrete Flooring, Concrete Repair, Countertop Installation, Crown Molding Installation, Custom Home Bars, Custom Homes, Deck Building, Deck Repair, Demolition, Dock Design & Construction, Drywall Installation, Drywall Texturing, Energy-Efficient Homes, Exterior Door Installation, Fiber Cement Siding, Fireplace Installation, Floor Leveling, Flooring Installation, Foundation Construction, Foundation Repair, Garage Building, Gas Fireplace Installation, General Contracting, Green Building, Grout Repair, Home Additions, Home Extensions, Home Gym Design & Construction, Home Remodeling, Home Restoration, House Framing, Kitchen Remodeling, Laminate Flooring Installation, Linoleum Flooring Installation, Masonry, Pool House Design & Construction, Porch Design & Construction, Stone Installation, Stone Masonry, Stone Siding, Tile Installation, Workshop Design & Construction, Custom Home

Areas Served

Asharoken, Babylon, Bay Shore, Bayport, Belle Terre, Bohemia, Brentwood, Centereach, Centerport, Central Islip, Commack, Deer Park, Dix Hills, East Islip, East Northport, East Setauket, Eatons Neck, Elwood, Farmingville, Holbrook, Holtsville, Huntington Station, Islip, Islip Terrace, Kings Park, Lake Grove, Lake Ronkonkoma, Melville, Mount Sinai, Nesconset, Nissequogue, North Babylon, North Bay Shore, North Lindenhurst, Northport, Old Field, Poquott, Saint James, Sayville, Selden, Setauket-East Setauket, Smithtown, South Huntington, Stony Brook, Terryville, West Babylon, West Islip, Wheatley Heights, all Suffolk county


ICPI Award-winning


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Business Details

Business Name


Phone Number

(631) 543-1177



1015 West Jericho Turn Pike
Smithtown, NY 11787

Typical Job Cost

$30,000 - 5 million

License Number

15435-H1 27543-H1


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