koi fish pond long island nyGreg Gauger was born in Grajewo, Poland. As a young boy, Greg attended public schools until the age of 14. In 1993, he moved to the United States and continued his education to graduate from West Babylon High School. He had many jobs while going to school, but by the time he finished high school, he had a control of his own construction business. He primarily dealt with private home remodeling work, both interior and exterior. In 2014, Greg joined Gappsi and is in charge of the home remodeling and masonry division. His duties include designing, estimating, and the on-site managing of crew leaders. Greg is a dedicated husband and father of three children. He is well-experienced and knowledgeable and our customers compliment his services.

koi fish pond long island ny Martin Okonwicz was born in Elk, Poland and as a young boy he attended public school. By the age of 16 he was working in various interior and exterior construction companies in Poland and also attended college until 23 years old. In 2005 he moved to the United States and continued his adventure with construction. Martin became very experienced in all phases of residential and commercial projects. By 2008 Martin had his own construction business which primarily dealt with interior and exterior, residential, new construction. In 2016, Martin joined with Gappsi as Onsite Working Foreman. Martin is a dedicated husband and father of two children. He is knowledgeable and well-experienced with hands-on labor. Our customers always compliment his work.

Long Island Home Builders - New Home Construction, Custom Homes, Additions and Extensions

custom home builders long island nyGappsi is one of Long Island's most prestigious custom home builders.

Specializing in new home construction, custom built homes, luxury home building, home extensions, additions and residential renovations on Long Island NY.

Custom Homes - Luxury Homes - Home Extensions - Room Additions - New Construction - Custom Home Design - Family Room Additions - Garage Additions - Second Story Additions - Dormers

Licensed and insured for over 25 years, our Long Island general contractors and home builders can help design and build the custom home you always wanted.

Here Are Some Points To Consider Before New Construction

  • What purpose will this new room serve?
  • Make sure your plans fit into your budget.
  • Make sure you are in contact with a contractor or designer when you draw up the plans for the extension or dormer.
  • Make sure you know the building materials that will be needed, and how much it will cost.
  • Make sure the house is inspected before beginning any new construction.
  • Make sure that the building materials being used go with the rest of your house.

Gappsi Custom Home Builders on Long Island NY - New Construction Homes and Additions


Samples of our work

Suffolk County 27543-H1 9-10-99 to present, 15435-H1 7-1-88 to 7-1-97  Nassau County H2209100000  Southampton L002384  NYC and The Five Boroughs 1321423

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