Collingwood firefighters were called to a structure fire 3 a.m. Monday.
Collingwood Fire Chief Dan Thurman said the initial fire was at an industrial business in the Sandford Fleming Drive area.
“The fire started in a storage shed and spread to the main building of an industrial business,” Thurman said.
There were no people in the building at the time of the blaze.
Thurman said approximately 20 firefighters attended the scene, and they extinguished the fire by 6 a.m.
The estimated cost of the damage is yet to be determined, he said.