Binishells System 4 is our greenest construction solution. It also offers advantages with regards to costs, speed of construction and building strength. This 10m x10m (900sq.ft) square based home is an innovative and simple construction solution using less material to enclose more space. It is more affordable because it uses local materials more efficiently and greener because it provides a highly efficient building skin with little or no waste. Binishells System 4 is ideal for use as middle income housing, shared housing or for use in educational facilities.