Fraser Bond are the leading lettings and property management agents for Belvedere House - London SW1. Belvedere House at 27 Knightsbridge is an office building in Knightsbridge. Net lettable area is ca 3,421m2. 2017 May - Reuben Brothers acquire 27 Knightsbridge, advised by Gerald Eve. The building is refurbished and 40,000 sq ft of high-quality offices are leased out.