<p>This study develops a moderated-mediation model based on the Theory of Planned Behavior and Self-Determination Theory to examine how parental influences shape young consumers' intentions to purchase green homes. A questionnaire is administered to 432 young consumers in Hong Kong, and the data are analyzed using partial least squares structural equation modeling. The results reveal that parental norms, perceived parental autonomy, and perceived behavioral control are significantly associated with intentions to purchase green homes. Furthermore, perceived parental financial support mediates the relationship between parental norms and green home purchase intentions. The parent–child relationship moderates the relationships between injunctive norms and green home purchase intentions, as well as between descriptive norms and perceived parental financial support. Overall, this model accounts for 76.7% of the variance in purchase intentions. This research contributes to the literature on green behaviors and offers practical insights for individuals, developers, and green organizations seeking to promote sustainable housing.</p>