Chapter 9 Contractors
| Building designer | EME Design |
| Builder | Ridge Developments |
| Landscaping | Haydn Barling Landscapes |
| Mechanical ventilation | |
| - System supplier | Fantech |
| - Installer | Arvio |
| Rammed earth | Earth Structures |
| Hot water heat pumps | Enter-Shop |
| Blower door testing | Efficiency Matrix |
| Solar PV | Glen Clark & Co |