-Serious Windows – Energy Efficient Windows & Glass
http://www.seriouswindows.com/index.html

-Greywater irrigation – grey waste treatement
http://www.greywater.com/

-Superior Walls – Insulated Concrete Walls
http://www.superiorwalls.com/

-Green Roofs – GreenGrid Modular Roof, Rooftop Garden, LEED
http://www.greengridroofs.com/

-RSMeans Building Construction Cost Data 2010