Green Addition for East End Home, Long Island

This extensive green home design project doubled the size of a unique triangle-shaped summer home. Our Long Island green architecture firm helped these clients realize their vision of transforming the property into a fully functional year-round residence, complete with two home offices and energy efficient design upgrades.


  • Convert a summer residence into a year-round home with two offices
  • Double the size of the home with a new addition


  • The existing home’s floor plan was an equilateral triangle, a very unique footprint that required innovative planning
  • Equipping a home originally built for summer use with an energy efficient heating & cooling system


  • New geothermal heating & cooling system
  • Spray foam installation
  • Removal of electric baseboard heat
  • Motorized clerestory windows creating stack effect ventilation
  • Fully featured water views in both office spaces
  • One large office can double as extra living space for family gatherings