Officers forced entry to the address at around 11:00hrs and found a tent equipped to grow cannabis and around 60 cannabis plants drying.
Enquiries are continuing.
The operation was led by officers from Sutton South Safer Neighbourhoods.
PC Josh Ironside, of Sutton South Safer Neighbourhoods Team, said: “This was a significant discovery. All the plants have been seized along with all the growing equipment.”
If you have any information about any drugs activities in your neighbourhood, contact Sutton Police station on 101. Alternatively, contact Crimestoppers anonymously on 0800 555 111. If you see a crime being committed or in an emergency, call police immediately on 999.