• I have done several houses that go down 2 levels below existing basements, the one i pictured is quite rare, but had the space to do it - if it fits within planning guidelines, and structural engineers and an army of other consultants say it will work, then you can do it.

    Quite often it will go to committee, as there will be objections, or it may need to be assessed for further impact on the area.

    The thing is the properties you read about are as nothing compared to the ones you dont, as most people with the money are very private. I have doen a house with a waterslide from the master bedroom to the swimming pool in the basement, a house with a cricket net and virtual golf driving range, and a roman style villa where the "roof" of the central courtyard was a see through swimming pool, that was double hulled with a fish tank between the layers, creating the effect that you were swimming with fishes 30 ft up in the air.

    You will find no publicity about any of these builds

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