Summary/Resumen.
In this paper it will be presented and analyzed the process of citizen participation that took place for the revision and study of the Plan Regulador Comunal of the commune of Estación Central in Santiago, Chili. It's a case with a high level of importance in the country because it combines this emergent practice, citizen participation, with one of the most relevant instruments for urban planning in the city, the Plan Regulador Comunal.