Cognitive study and upgrading of the 20th century architectonic heritage: experiences and methodologies

One component of the heritage of publicly funded property developments put up since the Second World War is residential districts designed by leading architects in which upgrading has to take into account considerations of safeguarding. The raising of the threshold from 50 to 70 years before safeguarding norms come into effect means that local authorities and management companies have sole responsibility for the modification and safeguarding of this heritage. This paper looks at some examples of 20th century housing estates designated for upgrading in order to highlight the specific strategies adopted, selected from a range of actions based on the need for accurate knowledge and collective agreement by all the parties involved right from the design phase.