As far as the new city quarters are concerned - the blocks of flats - the situation is rather simple from an administrative point: most of them belong to housing associations (although private ownership grows). Since the beginning of the 90' successive definition of systems of supporting the regeneration of those areas are being implemented. Between 92 and 97, the housing associations could apply for special grants dedicated to covering the technical maintenance of the building stock, especially for the improvement of thermal insulation, defined as a % of the improvement costs. These grants were distributed ...