With regard to new housing, bodies that build or manage housing located in a borough or group of boroughs send the mayor of the municipality, who informs the mayors of all the boroughs, the list of housing units reserved by agreement for the municipality, as soon as this list has been finalised.
The mayor of the municipality and the mayor of the arrondissement agree, for each housing programme, on a numerical division by half of the housing located in the arrondissement or group of arrondissements, taking into account the type and characteristics of the housing. If no agreement is reached, the housing units reserved for the municipality in the programme are chosen in turn by the mayor of the municipality and the borough mayor.