Fraser Bond are the leading lettings and property management agents for 45 Eaton Square - London SW1W. 45 Eaton Square is a terraced house in Belgravia, London SW1. The building has a resident porter and exclusive access to the residents-only Eaton Square gardens. The mansions that surround Eaton Square, one of London’s largest residential gardens, were built in the early 1800s by prominent English architect Thomas Cubitt, who was responsible for developing a number of the city’s historic streets and squares. Eaton Square remains one of London’s most sought-after addresses attracting a.