In the context of the firm and enthusiastic development of renewable-based distributed energy systems, high-profit household collaboration strategies are widely recognized as essential for scaling up decentralized green hydrogen systems in urban residential communities. Here we develop bottom-up energy models linking climate, human behavior, and community characteristics to assess the cost-effective impacts of system deployment pathways on community green hydrogen systems for 7 North American climate zones in the 2030 ~ 2050 periods. Despite lower energy costs in moderate climate zones compared to hot and cold zones, a consistent pattern in deployment pathway impacts on costs is observed across all zones. The study underscores the critical role of selecting the right deployment pathway for urban decarbonization, with potential cost discrepancies of up to 60% between optimal and suboptimal options. Furthermore, energy storage demands significantly influence energy costs, emphasizing the need to prioritize increased energy storage in pathway design.