Accounting for spatial interdependence is relevant for the analysis of structural change in farming because of potential interactions between farms. To identify specic farms' relationships considering farm survival, a mixture modelling framework that enables capturing heterogeneity in spatial interdependence between farms is developed. An application to a panel of farms in Brittany in France from 2004 to 2014 shows that relationships between farms are more in terms of competition for land than positive spill overs of new technology adoption, leading to a negative impact of neighbouring farms' size on the probability to survive for a majority of farms.