Despite significant investments in the drainage system by the Ho Chi Minh City government, urban flooding remains a pervasive issue. This paper investigates the willingness of local households to financially contribute to a new flood control system designed to mitigate high tide-induced inundation. Utilizing the Contingent Valuation Method (CVM), our findings indicate that residents are prepared to contribute between 220,000 VND and 250,000 VND for the project’s implementation. This study provides policymakers with demand-side evidence to inform decisions on urban flood control initiatives.