The current document constitutes a thesis description about the use of Strategic Environmental Assessment in the Colombian post -conflict scenario. Post-conflict periods are characterized by rapid and hyperdevelopment conditions and an urgent need to allocate financial resources to large scale projects to support post -conflict recovery and reconstruction (Bouma, 2012). These conditions can result in severe environmental impacts. Therefore, efforts should support ways of sustainable development, and to avoid the depletion of natural resources and the emergence of new conflicts. Strategic Environmental Assessment (SEA) has the theoretical potential to assist this task of the Colombian government as a tool and strategic thinking to support decisions. The project is focused on identifying the opportunities and challenges arising from the post -conflict context and the SEA institutionalization in Colombia. By doing this, the main aims of the study are: a) to contribute to the limited scholarly literature available about the application of SEA in post -conflict context, hereunder research on the institutional capacity involved, b) to support the Colombian government with a mechanism for reaching sustainable development plans in the post-conflict municipalities through the action-research approach.