$2m damage after Osborne Park unit fire Firefighters battle a blaze at industrial units in Osborne Park. PICTURE: Stewart Allen Source: PerthNow A FIRE has caused $2 million damage to industrial units overnight. A timber flooring business and an adjoining unit in Sundercombe St, Osborne Park were destroyed by the blaze, which started at 8.30pm. Witnesses said they heard several large explosions before seeing the single-storey building on fire. Around 50 fire crews battled the blaze for an hour before bringing it under control. It's believed the roof of the building contained asbestos, posing hazards to fire fighters. A bulldozer will be needed to clear debris today before fire investigators can safely access the building to determine the cause.