Carrstone House was designed to meet the clients desire for a highly environmentally sustainable life, achieving Passivhaus Plus certification. The living spaces are arranged in an open plan format facing south to use maximum solar gain. The master bedroom and lounge are the most used rooms and so are located to the south maximising the views. A central utility spine separates private and public area within the house, providing a clear design feature. The house optimises high levels of natural light, reducing energy usage and improving wellbeing. Solar panels incorporated into the roof will provide enough energy to completely meet the power and heating need of the home, with excess to run their electric car. This makes the house carbon neutral and energy positive. Efficient water fittings, water butts and sustainable drainage solutions will be included to reduce the usage of water.