Crews manning six fire engines were called to the scene of a building fire in the Bradford district this afternoon.
The blaze broke out at around 2.30pm in Greenwood Wood, Ilkley Road, Addingham.
Firefighters from Silsden, Keighley, Otley, Rawdon and two fire engines from Skipton have been scrambled to the scene.
A spokesperson for West Yorkshire Fire & Rescue Service said: "Calls received to reports of a building on fire. On arrival crews confirmed this was a building approximately 40m x 20m 100 per cent involved in fire.
"Incident was increased to make pumps six."
Firefighters used two large jets and two hose reels to extinguish fire.
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