Cheam is about as safe as the rest of Sutton, no safer and no worse. Its crime rate is almost exactly the borough's. Violence and sexual offences make up a smaller share of offences than they do nationally. Theft from shops and cars makes up a slightly larger one. That makes Cheam an ordinary suburb, and buyers should expect neither trouble nor a sanctuary.
The Metropolitan Police's published crime rate for Cheam was about 77 per 1,000 residents in the year from June 2025 to May 2026, about 2% below the Sutton average. That rate covers 2,773 recorded crimes over the same twelve months. Police.uk maps reported crime street by street, so check the map for the road you are thinking of buying on. A suburb-wide rate can't tell you whether your road is busy at closing time.
Sutton's own rate over the same period was about 79 per 1,000, compared with about 77 in Cheam. The gap is a couple of points, and a handful of incidents either way would close it. If you think of Sutton as fine, that's good news. If you moved to Cheam to get away from the rest of the borough, it's less so.
As neighbourhoods go, Cheam is moderately dense, with an average of about 6,620 people per square kilometre across its statistical areas. About 3% of residents are unemployed, and about 5% of households count as overcrowded. Those figures describe a comfortable, built-up suburb where most households have the space they need.
Violence and sexual offences are the largest category in Cheam, at 29% of recorded crime against 35% nationally. That category is the biggest almost everywhere, and it covers everything up to common assault where nobody was hurt. Anti-social behaviour makes up 17% here and 16% nationally, so the two are level. Shoplifting is 10% against 8% nationally, public order offences 8% against 7%, other theft 7% against 7%, and vehicle crime 7% against 5%. Compared with the country as a whole, Cheam's crime leans slightly more towards things being taken and slightly less towards people being hurt.
The charge rate is a separate question from how safe the area is. Across the Metropolitan Police, a suspect is charged in about 10% of cases, against about 12% nationally, which puts the force 33rd of 42. About 53% of the Met's cases are closed without anyone being identified. Those are force-wide figures and say nothing specific about Cheam's streets. They do mean that if something of yours goes missing, it is more likely to stay missing than to be returned with an apology. Report it anyway, because the insurer will ask for the crime number.
On safety, Cheam is middling. It's neither a problem area nor a selling point, and it is level with the borough around it.