The London Fire Brigade are investigating the cause of the blaze which broke out at an industrial unit during the early hours of Saturday morning.
Four fire engines and around 20 firefighters and officers were called to the fire at the premises of Zen Builders Ltd in Abbeydale Road.
The Brigade was called at 3.29am and the fire was under control by 5.10am. Fire crews from Wembley, Park Royal and Willesden fire stations attended the scene.
The cause of the fire is under investigation.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here