Estate. Citizen participation is an essential aspect in the transformation of the built environment since it brings together urban agents (e.g. residents, direct users, technicians, architects, planners, public workers, politicians, etc) around projects, acting as a catalyst to collectively define an agenda built upon citizen needs and social situations. Participation is not a series of events, rather, a process by which the estate, the city, and its inhabitants experience a collective process of learning, approaching perspectives from the common and the diverse, looking for agreements, commitments, and reaching consensus.