This text puts in link sociocultural community development and the concept of intergeneration at first from a theoretical point of view, then illustrated by the action from an association for the social support at home. The theoretical contribution leans on the concept of « multigénérativité » and four models of interaction between the generations of Höpflinger to highlight in what the posture and the roles inherent to sociocultural community developers lead the profession to act in the appearing field of interactions between generations. The proposed illustration shows how sociocultural community development makes of an economic transaction a community action in an associative spirit.