The Silang-Sta. Rosa subwatershed has undergone massive land use changes in the past two decades, brought about by rapid urbanisation and industrialisation. Since it is ideally strategically located for economic development, further conversion of forest and agricultural land for industrial, residential and commercial activities is planned in the area by 2025. This study was conducted with the aim of making the cities in the Silang-Sta. Rosa subwatershed low carbon and climate-resilient. This research suggests that runoff-neutral development to lower the intensity of floods associated with the proposed land conversion will reduce the number of affected people by about 20% by 2025.