Forty million pounds of it, according to this. The property's in Holland Park, it was once the Burmese Embassy, it's been a home for the blind, by the end of 2008 it's likely to be one of the UK's most talked about trophy homes. Cowell is the latest celeb - after everybody's favourite estate agent - to extend downwards. Plans include an underground swimming pool and car park, and will comprise 21,000 sq ft.

Going underground [September 18, 2007]

Technorati Tags: celebrity, London, property, real estate