In recent decades, the urban heritage of Latin America and, in particular, Argentina, has been framed in a context of unmeasured progress in urbanisation and growth without proper planning in cities that place it in a highly vulnerable position. However, responses from local authorities to tackle this problem are often scarce. These conditions jeopardise not only the safeguarding of urban heritage, but also the body of appropriation, identities and meanings that communities have built around it. In this context, from the point of view of sustainability — particularly socio-cultural — the aim is to create new relationships that the geographical area has as a conditional-constraint, based on agreements/disagreements between the various social actors in order to integrate the diversity of views and interests involved in the heritage processes carried out in cities. In this context, this investigation assesses the socio-cultural sustainability of the urban heritage of the city of Olavarría, Buenos Aires, Argentina. In order to carry out this task, cultural policies, and in particular heritage policies, which took place in the party from 1983 to 2020 are reconstructed in the first instance. A pre-inventory of urban heritage is also carried out, including the sub-categories of architectural, intangible, movable, archaeological and palaeontological heritage, parks and squares. Subsequently, a methodological tool of indices and indicators is developed to assess socio-cultural sustainability in the area of study from an interdisciplinary and integrated approach. To this end, 24 indicators were constructed grouped into four variables: institutionalisation, recognition and information, ownership and participation and cultural diversity. The evaluation of each of them, according to different gradients, made it possible to produce partial indices and, on average, to arrive at a Social and Cultural Sustability Index of the Urban Heritage of Olavarría. The results of this research show that the sustainability of the city’s urban heritage is compromised, with the result that much of its cultural assets and manifestations are highly vulnerable to multiple threats. Different lines of action are also proposed for sustainable management of local urban heritage. Faculty of Humanities and Education Sciences