1786 - 1793
http://www.british-history.ac.uk/survey-london/vol5/pt2/p166 which said that Thomas Hankey 'remained at the house until after the close of the century.' Thomas Hankey died in 1793: this must relate to his heirs or executors.
Please note that address locations are approximate. For many claimants, the addresses are only given to the nearest town or borough. Where a full street address is provided, the address has been located as nearly as possible, but street layouts and numbering have often changed since the 19th century.