The Feasibility Study for the project Building resilience of urban populations with ecosystem-based solutions in Lao PDR is structured thematically. The first half, Sections 1–5, describes the background, baseline conditions, past and ongoing initiatives in Laos, and remaining gaps and barriers to climate change adaptation. The second half, Sections 6–12, describes the climate impact modelling and vulnerability assessment conducted as part of the project preparation as well as identification of potential EbA interventions applicable in Laos, including how these assessments have led to the selection of sites and proposed interventions. Sections 11 and 12 present the design of proposed project activities and how they collectively contribute to achieving increased climate-resilient sustainable development in Laos.