“…It was unusual in terms of the depth and number of investigations, but the practice of empirically evaluating buildings in use was not unique to the House of Commons. In the 19th century, various public buildings had been subject of POEs, including, amongst others, the Crystal Palace (Schoenefeldt, 2011(Schoenefeldt, , 2008, the Natural History Museum (Cook & Hinchcliffe, 1996), the Royal Courts of Justice (The Times, 1887, p. 3) or Smithfield Market (Yu, 2015) and St George's Hall in Liverpool (MacKenzie, 1863). The aim of this paper, however, is not to provide a comprehensive history of early POEs, but to use the House of Commons as a site where historic practices can be studied in depth.…”