Geograph - photograph every grid square

The owner went for this interesting look apparently to get back at neighbours who had objected to her application to demolish the building and replace with a new house including a two-storey basement. Since it stands in a conservation area, Kensington and Chelsea Council has since demanded she return it to its original state.
The trend of excavating basements (creating so-called "iceberg homes") among London's super-rich has reached such a scale in K&C that the council has recently limited them to a single storey and banned them altogether from listed buildings.