Do security logics take part of the selling arguments legitimating the multiplication of fencing and protection devices in residential areas across France? An analysis of the representations of the phenomenon, out of an interviewed-based approach (sixteen in-depth interviews with French property developers and twenty ones with dwellers of two fenced and protected residences in the Greater Nantes Area), makes some answers possible to this question. Four main points arise: consensus or indifference about residential fencing, security evidence in the property developers' arguments, ambiguous relations with fencing and security within dwellers' discourses and at last, lack of illusion regarding the effectiveness of the security approach.