Four fire engines and around 25 firefighters tackled a house fire on Bennetts Close in Mitcham.
Part of the ground floor of an end of terrace, two-storey house was damaged by fire. Six people left the property before the Brigade arrived. There were no reports of any injuries.
The fire is believed to have been accidental and caused by items placed too close to an air fryer.
A London Fire Brigade spokesperson said: "Fires are more likely to start in the kitchen than any other room in the home.
“It’s really important that you always check air fryers and other appliances are turned off and unplugged when not in use, unless they’re designed to be left on, like your fridge or freezer.
“Keep clutter to a minimum on your kitchen work surfaces especially near air fryers, toasters and hobs as they can accidentally switch them on or catch fire."
The Brigade was called at 1921 and the fire was under control at 2004. Fire crews from Mitcham, Norbury and West Norwood fire stations attended the scene.