The categories in which the 20 teams will be confronted on are the following:

ARCHITECTURE        . architecture

                                   . engeneering and construction

ENERGY                     . energy efficiency

                                   . energy balance

COMFORT                 . comfort conditions

                                  . household managment

SOCIO-ECONOMIC   . communication and social awareness

                                 . city planning, transportation, affordability

STRATEGY               . innovation

                                 . sustainability

The 20 housing prototypes that will be displayed in Versailles for a month will be confronted on the above mentioned listed points.