The position paper ‘The development of services for treatment of personality disorder in Adult Mental Health Services’ was published by the College of Psychiatrists of Ireland Personality Disorder Special Interest Group (PDSIG) in 2021. Following this, we are advocating for the development of a national treatment strategy for personality disorders in Ireland. As part of this process, we have examined international evidence and best practice guidelines for establishing personality disorder services. Key recommendations from the literature include access to services, continuity of care, a multidisciplinary approach, tiered models of care, collaboration with service users, staff training and supervision, and delivery of evidence-based interventions. These recommendations should form the backbone of a national personality disorder strategy for Ireland.