101 Brook Street is a brick built, second storey building, under a clear span, metal decking roof. There is a concrete mezzanine floor at the Brook Street end of the building with partitioning creating a series of offices and toilets.
Beneath the mezzanine floor partitioning forms the entrance lobby and toilets, with the workshop open to the main works area. In addition, there is a basement under part of the building used for storage.
There is a private yard to the rear and parking to the front.