An analysis of the impact of stakeholder consultation during the conservation decision-making processes is presented. Defining and finding opportunities for stakeholder communication within conservation work is an ethical necessity when working with cultural heritage, but the limits and practice of this necessity are less clear. Case studies are used to explore which aspects of the conservation process stakeholders are most likely to be consulted about, and reviews the impact of their views. It asks whether conservators have a preference in which decisions they are prepared to share with stakeholders across three aspects of conservation: the initial appraisal, treatment and the display or storage. Where consultation relates to treatment, conservators are more likely to fall back on their own technical authority except when those consulted are regarded as fellow professionals. Other categories of stakeholder such as artists, originating communities, and religious groups were found to be more constructively consulted on the understanding of the object and on care related to display and storage. Conservators should be offered more explicit guidance on the ethics of consultation, the aspects of consultation that they should engage with and on the ethical ways to deal with conflict arising from consultation.