A moveable, energy-efficient, straw bale building is being auctioned for £5,000 to £10,000 by Clive Emson Essex.
Marketed as being suitable for an office, guest room, studio or “teenage crash pad”, the structure needs little or no heating and can be delivered by a low-loader truck.
Measuring 4.2m by 3.2m, it is made from natural materials, including sheep’s wool and straw.
The auction will take place on 22 July at Channels Golf Club in Chelmsford, Essex.