Poor communities living in coastal regions of Vietnam are adversely impacted by frequent flooding. Each year approximately 60,000 houses are destroyed or damaged by floods and storms in coastal provinces. This is likely to worsen given climate change scenarios for Vietnam. Resultant economic impacts make it increasingly difficult for vulnerable families to escape the cycle of poverty. The proposed GCF project seeks to scale up interventions that are already tested to increase the resilience of vulnerable coastal communities. Building on ongoing social protection programmes related to housing for the poor and marginalized, the project will incorporate storm and flood resilient design features in new houses benefiting 20,000 poor and highly disaster-exposed people. As part of an integrated response to managing flood risks, 4,000 hectares of mangroves will be rehabilitated and/or planted to function not only as storm surge buffers, but also to provide ecosystem resources that can support coastal livelihoods. Moreover, to support and sustain both the impact of this project as well as future requisite government policy adjustments that strengthen the resilience of coastal and other communities, resources will be used to systematize climate and economic risk assessments for private and public sector application in all 28 coastal provinces of Vietnam.The project relies on grant finance as (a) the proposed interventions will benefit vulnerable families identified as poor by the government, (b) strengthens natural defenses proving public value, and (c) does not generate revenue that lends itself to providing reflows to the GCF. The project is fully aligned with the Government of Viet Nam (GoV)'s strategies and was designed following extensive stakeholder consultations. The National Designated Authority (NDA) has issued a no-objection letter for the project.