In mountainous rural settlements facing the threat of geohazards, local adaptation is a self-organizing process influenced by individual and group behaviors. Encouraging a wide range of local populations to embrace geohazard adaptation strategies emerges as a potent means of mitigating disaster risks. The purpose of this study was to investigate whether neighbors influence individuals’ adaptation decisions, as well as to unravel the mechanisms through which neighborhood effects exert their influence. We employed a spatial Durbin model and a series of robustness checks to confirm the results. The dataset used in this research came from a face-to-face survey involving 516 respondents residing in 32 rural settlements highly susceptible to geohazards. Our empirical results reveal that neighborhood effects are an important determinant of adaptation to geohazards. That is, a farmer’s adaptation decision is influenced by the adaptation choices of his/her neighbors. Furthermore, when neighbors adopt adaptation strategies, the focal individuals may also want to adapt, both because they learn from their neighbors’ choices (social learning) and because they tend to abide by the majority’s choice (social norms). Incorporating neighborhood effects into geohazard adaptation studies offers a new perspective for promoting disaster risk reduction decision making.