According to the United Nations (UN), a “continuous, participatory, and inclusive urban planning process should be the starting point and framework for improving population living conditions,” and this research emerges from examining trends in smart cities. It explores the impact of collective intelligence, geographical information systems, and cognitive systems as a way of supporting the decision-making of local governments (municipalities) to face the challenges announced by the UN in the Urban Agenda 2017. This methodology employs an exploratory approach using the participatory action research method. The model was tested in three municipalities in Ecuador using a technological and collaborative platform called Cognitive Urban Planning (PUC). The results highlighted improvements in the decision-making process in urban planning, since the interactive participation processes through the PUC allowed for the suggestion of a group of strategies for an emerging neighborhood plan developed with the citizens working together in the municipality in real-time. In conclusion, the effects of the decision-making plan could be applied to improve and enhance community participation through city co-creation, supporting the decision-making process of municipalities in a way that promotes inclusive urban planning and stakeholders' awareness, as the recommended plans are supported by the desires and needs raised by citizens.