The Urban Renewal and Rehabilitation Pilot Project (PP2) was developed from 1969 to 1976 and was part of the Experimental Housing Project (PREVI) that had the support of the United Nations. The PP2 was focused in providing a solution to the slum spaces, taking as an experimental area four blocks of the Monumental Zone of Barranco (Lima - Peru). That will be the basis of a National Housing Rehabilitation Policy, through a comprehensive and multidisciplinary and innovative vision for its time. Despite not being fully executed, these characteristics have placed as the genesis of the Urban Regeneration processes of Peru mainly due to the management model in its social, economic, legal and planning dimensions.