The property comprises the middle bay of a triple bay workshop known as Silver Mills and is of steel portal frame construction with corrugated asbestos upper elevations and roof covering incorporating acrylic roof panels. The exterior lower elevations are of brick and concrete block with partition wall of profile metal sheet. The workshop has a roller shutter vehicle access door in the front elevation and a solid concrete floor with 6.1 m eaves above. The workshop has two full length travelling gantry cranes each of 5 tonne capacity.