The previous studies on roof top rainwater harvesting from numerous research papers demonstrate a comprehensive understanding of the benefits, challenges, and implementation strategies of this technique. Numerous studies have highlighted the benefits of roof top rainwater harvesting, such as reducing the demand for groundwater and surface water, mitigating the risk of flooding, and minimizing the impact of stormwater runoff. Additionally, the papers have indicated that this method is cost-effective, environmentally friendly, and promotes self-sufficiency. The challenges of roof top rainwater harvesting have also been studied, including the potential for contamination, the need for regular maintenance, and the limitations of the storage capacity. However, the studies have shown that these challenges can be addressed through appropriate design, implementation, and maintenance strategies