Despite ongoing flood mitigation efforts, the March 2025 Greater Jakarta Flood revealed increasing vulnerabilities driven by urbanisation, environmental changes, and the intensifying threat of climate change. With water levels reaching 15–300 cm and over 100,000 residents affected, this disaster underscores the need for a more integrated approach to flood risk management. This policy brief examines the key challenges in building long-term urban resilience and developing flood risk management in Indonesia's Jakarta, Bekasi, and other flood-prone areas. These findings suggest that strengthening early warning systems, improving land-use practices, and enhancing community preparedness can help mitigate future flood risks in a changing climate.