The advice included only speaking to unknown and unexpected callers once having secured the door chain to allow the door to only open slightly or talking to them through the door whilst the caller is outside.
Don't let them into your home, don't give them any money and don't give them your bank details, residents were told.
PC Grover, of Belmont South Safer Neighbourhoods Team, said: "Our advice is - 'Not sure? Don't open the door'."
Lynn Lawton, one of the managers at Sutton Lodge, said: "I think it is brilliant that the police and Sutton Council come together to give out this advice for residents. It will help them be more vigilant and keep them safe"