The Grange occupies a triangular piece of land on the west side of the park between the Wandle and London Road. It was not part of the Carew’s deer park and in the 18th century it seems to have been wet meadow land which was used for textile bleaching.
The area was acquired by Alfred Smee (1818-77) who was the surgeon to the Bank of England and had wide scientific interests. Smee developed this into an elaborate garden described in his book My Garden published in 1872.