The assignment explores the application of the Critical Path Method (CPM) in managing construction projects with an emphasis on sustainability. By analyzing various activities involved in a hypothetical sustainable building project, such as preliminary works, site preparation, concrete preparation, formwork installation, brick and block construction, roofing, plumbing, drainage, timber fixtures, electrical installations, fencing, landscaping, paving, and roads, the assignment identifies critical paths that determine project timelines. It highlights how effective scheduling can mitigate delays and optimize resource allocation. The report integrates concepts from sustainable construction practices, emphasizing green building design to enhance efficiency while reducing environmental impact. Additionally, it discusses potential challenges in rescheduling non-critical activities without affecting overall completion dates. Through this comprehensive analysis, the assignment aims to demonstrate the significance of CPM in ensuring timely and efficient project delivery within the realm of sustainable construction.