Cadogan Square was built in the late 19th century by the Cadogan and Hans Place Estate Company. The houses which surround the square were one of the first major 19th-century developments to be built in red brick rather than stucco.
The square was built on the site of Henry Holland's own mansion, which originally opened on to Hans Place. The mansion had a miniature landscape park, including a 16-acre meadow, formal flowerbeds laid out in French fashion and a Gothic ice-house.
The novelist Arnold Bennett (1867-1931) lived at No. 75 from 1921 until shortly before his death. He was the author of many novels, including Clayhanger, and in his later years was the highest-paid literary journalist in England, working for the London Evening Standard. He died of typhoid, contracted as a result of drinking a glass of tap water in France, which he had done to demonstrate the purity of the nation's water supply.