The Billionaire Iceberg Basements
In Prime Central London, where building upwards is banned, billionaires dig downwards. Some 'iceberg homes' have basements three storeys deep featuring car elevators and swimming pools.
In areas like Kensington and Chelsea, strict conservation laws and planning regulations make it virtually impossible to extend a property horizontally or vertically. For the ultra-wealthy wanting more space for cinemas, spas, and vintage car collections, the only way is down.
The Rise of the Iceberg Home
During the 2010s, London saw a massive boom in 'mega-basements'. These subterranean extensions often dwarfed the original house above ground, earning them the nickname 'iceberg homes'. Some developments excavated up to three storeys deep, requiring multi-million-pound engineering feats to support the historic houses above.
The trend eventually caused such immense disruption to neighbours—with endless convoys of soil-removal trucks, noise, and even structural collapses—that local councils were forced to introduce strict new rules limiting basements to a single storey. However, the existing iceberg homes remain a hidden, subterranean layer of extreme luxury beneath the streets of London.