Six fire engines and around 40 firefighters tackled a house fire on Maple Road in Surbiton.
The roof of a semi-detached house was destroyed by the fire. Around half of the roof of an adjoining property was also damaged by the fire. There are no reports of any injuries.
Control Officers took the first of 19 calls at 2249 and mobilised crews from Twickenham, Richmond, Wandsworth and surrounding fire stations to the scene. The fire was extinguished by 0134.
The fire is believed to have been accidental and was caused by an electrical fault.