 A galvanised iron duct system is located under the floor at the eastern end of the building.A small alleyway from Latrobe Terrace is to be found at the eastern end of the block and a small detached toilet block is located off this alleyway, connected to the building via a small area that has been enclosed with timber battens and fibro-cement sheeting.Paddington Antiques Centre was listed on the Queensland Heritage Register on 28 March 2003 having satisfied the following criteria.