Reports indicate that a "giga mansion" at 17 Belgrave Square in London has been listed for \$110 million. This property was acquired by high-end developers Fenton Whelan in 2022 for \$35 million and has since undergone extensive renovation. The firm, known for luxury residential complexes, secured a \$29.5 million bank loan for the renovation of the 22,000 sq ft house. The sale is notable as it is one of the most expensive properties available in London this year, despite a subdued luxury property market.

The previous owner of 17 Belgrave Square was Russian financier Georgy Bedzhamov. The Grade I-listed townhouse, built in 1840, has a rich history, having been owned by an MP in the 19th century and serving as the headquarters for the Royal College of Psychiatrists from 1974 to 2013. The current developer, Fenton Whelan, expects the renovation, including an orangery, attached mews, three-car garage, and staff accommodation, to be completed in the summer of 2026.

While the request referenced an article about a penthouse with Qatari backing, the details uncovered refer to 17 Belgrave Square and do not directly mention Qatari involvement or a penthouse. Sheikh Hamad bin Jassim bin Jaber Al Thani, known for his vast London property portfolio and estimated net worth of around \$1.2 billion, is reportedly considering selling his One Hyde Park penthouse for \$220 million and another property near Belgrave Square for \$150 million, totaling \$370 million. He previously bought a Grade II listed property near Belgrave Square in 2016 from the Barclay brothers for approximately \$150 million, and is spending a similar amount on its conversion, with an estimated finished value of over \$300 million.