We hope this publication will highlight the contribution of heritage mediation in a policy of territories sustainable development, becoming at once an element of identity, social cohesion, attractiveness, influence, territorial communication and economic development. This thinking is part of a territorial intelligence approach that seeks, as advocated by JJ Girardot, "to improve understanding of the structure and dynamics of territories". (Girardot, 2002) To support our demonstration we will focus on a specific area of heritage mediation we will call Ahvp1. This sector has the particularity to unify in one practice all systems and processes that characterize mediation heritage: culture, economy, preservation and conservation, and involvement of residents.