About 150 cannabis plants were discovered when a drug den was raided by police.
Officers from Purley Safer Neighbourhood Team received information the plants were being grown at the address in Foxley Lane.
The team raided the address on March 13 and discovered more than 100 plants being grown.
A 46 year-old man was arrested at the scene on suspicion of cultivating cannabis.
He has since been bailed to return to a south London police station in April pending further enquiries.
Sergeant Nicholas Tooher, from Purley SNT said: “We've acted swiftly to information we received about drugs being grown at this address.
“As a result of receiving information, we've been able to conduct further enquiries, obtain a search warrant and recover a large amount of what are almost certainly cannabis plants.
“If residents in Purley tell us about their concerns about crime or antisocial behaviour they can be sure we'll follow it up and make relevant enquiries and take appropriate action."
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