Reframing Sustainability in the Context of Overtourism: A Comparative Five-Dimensional Resident-Centered Model in Athens and Istanbul

The rapid rebound of global tourism post-pandemic has intensified pressure on desti-nations like Istanbul and Athens, bringing overtourism debates into sharp focus. This study examines how five sustainability dimensions (economic, environmental, so-cio-cultural, political, technological) shape residents' overtourism perceptions and tourism support. Using PLS-SEM analysis of 285 long-term residents' responses, this study reveals contrasting patterns between cities. In Athens, heightened awareness of environmental, economic and socio-cultural sustainability directly increases overtourism perceptions, subsequently reducing tourism support. Istanbul presents a counterpoint: environmental sustainability concerns alleviate overtourism perceptions, though without significant impact on tourism backing. Notably, political and technological dimensions show no statistically significant effects in either context. These findings demonstrate how sus-tainability perceptions are locally mediated, with identical factors producing divergent outcomes across cultural contexts. The study advances sustainable tourism literature by: (1) empirically validating context-dependent variations in resident attitudes, and (2) proposing a community-centered evaluation framework for policymakers. Recent study emphasizes the necessity of destination-specific strategies that prioritize residents' nu-anced sustainability concerns over generic tourism management approaches.