We have lived for three years in this single story granny-flat at the back of the garden and, since it was a new-build, we were determined to make it as carbon neutral as possible. It is raised off the ground in order to provide a rain-watering system for the large Turkey oak seen in the backgound.

The concrete floor is supported on cast aluminium screw piles. Built as a wooden structure with 30cm wood fibre insulation and Baltic larch horizontal external cladding, roofed with second-hand slate tiles.

• Underfloor heating is provided by an air source heat pump
• 16 solar voltaic panels supply electricity for the house. Spare electricity is stored in a house battery, or is used to charge the car. Any excess is exported to the grid.
• The windows are double glazed and designed to be sealed close during the winter months.
• In winter the house is airtight. Mechanical Heat Exchange System Ventilation keeps the air fresh inside..

Open on 25 October for tours at 11:00 and 3:00. Please book visit through Humanitix https://events.humanitix.com/dorset-greener-homes