£110M ‘Giga Mansion’ in Belgrave Square Redefines London Luxury: A Historic Address Transformed for Global Billionaires
A £110 million “giga mansion” is set to become one of London’s most expensive residential properties upon its completion at 17 Belgrave Square. This exceptional London Giga Mansion, developed by Fenton Whelan, is transforming the Grade I listed building into a sprawling 22,000-square-foot single-family residence, aiming to market it to global billionaires from early 2026….