In academic research, neighbour relationships are generally viewed as either absent – having been gradually eroded by processes of mobility and privatisation – or as positive in the way they engender greater levels of community resilience, neighbourhood attachment and reduced fear of crime. Yet, less is known about the negative side of neighbouring or of the factors that contribute towards rising neighbour conflicts in urban settings. This paper begins to fill this gap by examining how the dual processes of gentrification and increased residential density, or urban consolidation, create conditions for neighbour tensions to occur. Through a latent class analysis of reported complaints about neighbours to the Brisbane City Council from 2007 to 2014, the paper determines whether urban change processes of gentrification and/or densification are associated with distinct patterns of neighbour problems. The results demonstrate that there are three unique patterns of neighbour problems that vary by the type and intensity of reported problems. Further, high intensity problem areas are most associated with high levels of gentrification and high levels of densification. Overall, gentrification increases the odds of neighbour conflict more than densification does, suggesting the influence of cultural or class factors, rather than physical proximity or density, in accounting for neighbourly tensions.