I saw a SLP article a few years agot that said that the house was Grade I listed not II. This is because it is the earliest example of a house made from concrete.  It would make a wonderful project or maybe we could make it a community project if we could get grants etc.  There are so many talented people in ED I'm sure it is possible....    Also, I don't understand why Southwark can't serve the purchase order on the owners "agent" as the owner is uncontactable.