Iceberg homes are houses with big, hidden basements that may be significantly larger than the house that appears on the surface. These basements can be as many as four storeys deep – huge subterranean bunkers often containing luxury add-ons such as swimming pools, spas, gyms, bowling alleys and cinemas. Predictably they are favoured by wealthy celebrities.
However, the work involved in their construction can take up to two years, bringing massive disruption to surrounding neighbourhoods and turning them into long-term building sites. Some experts also claim that these constructions increase the risk of flooding. It's for this reason that authorities in London have finally decided to crack down on the luxury building trend.
He joined the growing number of wealthy Londoners who have been turning their mansions into so called "iceberg homes."