Four fire engines and around 25 firefighters tackled a fire at a derelict art gallery on High Street in Brentford.
The ground floor and roof of the two-storey building were partially damaged by fire. There are no reports of any injuries.
The Brigade was called at 0613 and the fire was under control by 0818. Crews from Chiswick, Heston and Acton fire stations attended the scene.
The cause of the fire is under investigation.