• Type of survey: continuous annual survey.
  • Population scope:companies whose main activity is described in section F of the CNAE-2009 list of economic activities, which includes building construction, civil engineering and specialised construction activities.
  • Geographical scope: the whole national territory.
  • PReference period: the calendar year, which, with some exceptions, coincides with the company's accounting year.
  • Sample size: 19,874 units.
  • Collection method: online completion of the questionnaire by the respondent (IRIA system).

Methodology documents, questionnaires, classifications...