Ten fire engines and around 70 firefighters were called to a fire at a shop with flats above on Hook Road in Chessington.
Part of the ground floor and first floor were damaged by the fire and half of the roof and loft conversion were damaged. A small part of the roof of an adjoining shop was also damaged as well as a single storey lean-to at the rear of the property.
Five people left the building before the Brigade arrived. One man was treated at the scene by London Ambulance Service crews.
The Brigade was called at 1503 and the fire was under control by 1819. Fire crews from Sutton, Kingston, Wimbledon, Surbiton, Twickenham and surrounding fire stations were at the scene.
The cause of the fire has been recorded as undetermined.