Over the last ten years an estimated 2000 new basements have been dug in central London. Super-rich people are maximizing property value as never before. Though they’re not building up, they’re digging down, creating mega-basements or ‘iceberg homes’ -nicknamed because there’s more square footage underground than above. Into these multi-level subterranean structures, owners are building anything from cinemas, swimming pools, beauty parlours, squash courts, wine cellars and servants’ quarters. Because of the noise of the digging, fleets of concrete mixers and lorries taking away the dug soil service the sites, the neighbours life in some of London’s poshest addresses has been hell.