Statistics Finland has enlisted the Finnish Terminology Centre to update the Classification of Buildings which was published in 1994. The updated classification will correspond with the present state of the building trade in Finland. In order to chart the scale of updates required Statistics Finland and the Terminology Centre organized a questionnaire for the relevant interest groups in the turn of the year, and in 2017 the updating work shall continue based on the answers to the questionnaire. The Terminology Centre will not only update the structure of the classification but also compose descriptions for those top and sub groups which lack them.