As a memorial, his friend Sir Alfred Yarrow dedicated a charitable building in Hampstead Garden Suburb in his name in 1916: the Barnett Homestead. A Greater London Council blue plaque unveiled in 1983 on Heath End House on Spaniards Road, Hampstead commemorates Barnett and his wife. In 1914, Henrietta Barnett founded Barnett House at Oxford in his memory, and it became the Department of Social Policy and Intervention, University of Oxford. There is a Samuel Barnett Close in Filwood Park, Bristol.