Two-Bedroom Contemporary Retreat. The exterior walls of this house are built using Hydraform 180MM Interlocking Conduit Blocks. 80 Square Metre, 2 bedrooms, 1 bathroom, and an open kitchen. Perfect for a small office or vacation home. In this video, we show you an interior that is set up for a small office. The dramatic shed roof over the main living area gives you 3-6 metres of vaulted ceilings that soar up. On one side you have three sliding glass doors and on the other side, you have three huge windows, creating a bright and airy space. There are sliding glass doors too in the master suite. A second bedroom acts as a guest suite or family bedroom.