The earth-sheltered homes will be built on a greenfield site on the edge of a rural village. It is (rightly) not easy to get permission to build on such sites, and the owner had to take the case through to Appeal after the local Council refused permission.
One way to get planning permission on greenfield sites is to demonstrate outstanding architectural merit through an innovative design. This is notoriously difficult as the bar is constantly being raised, and features such as new technologies, complex shapes, height, and overall size add to land, design, build and running costs.
Our approach is the opposite. Our designs are simple and have exceptionally low running costs. However, we argue that we remain innovative so long as measures such as SAP and Passivhaus do not recognise our use of super-insulated thermal mass as a heat store.
The Appeals Inspector for this application recognised the many benefits of the form of our design but felt it was too simple in its aesthetic to get planning permission on the basis of architectural merit, and there was insufficient innovation in his view. That raises questions as to whether planning policy deters affordable housing in rural areas, but there is a positive in that the affordability of our design and the wider scheme remained pertinent to the final judgement.