Introduction. The article is devoted to the analysis of the content of legal expert activities in public administration, aimed at conducting various kinds of research on facts, states, events, documents, the results of which create the conditions and prerequisites for solving administrative cases of various subject areas. An analysis of the current legislation and the state of legal doctrine suggests that the development of issues of legal expert activity in public administration is insufficient, both in terms of the content of normative material and in terms of the volume and content of theoretical and methodological research in this area.Purpose. Justification of the possibility of unifying ideas about legal expert activity, understanding the legal expertise itself, its relationship with related categories in the interests of improving the quality and effectiveness of regulatory regulation of this institution of public administration. Methods. Empirical methods of comparison, description, interpretation; theoretical methods of formal and dialectical logic. Private-scientific methods: systemic, grammatical and logical interpretation. Special legal methods: formal legal. The theoretical basis of the study was the work of domestic legal scholars in the field of legal expertise and expert activity.Results. The legal construction of expert evaluation activities has not yet received a completed theoretical, methodological and regulatory justification: there are no sufficient grounds for unifying ideas about legal expert activity, for understanding the legal examination itself, its relationship with related categories, which negatively affects not only the establishment of the essence and content of the examination and legal expert activity, but also impedes the development of systemic ideas about this institution, and also reduces the quality of its regulatory regulation.Conclusions. The diversity and specification of the types of research carried out within the framework of positive public management do not exclude the possibility of unifying the standards of expert activity and approaches to understanding various types of research of an expert and evaluative nature, which can positively affect the possibilities and quality of strategic planning, since they can form its empirical basis. A number of examinations can be used to study the legal consciousness and archetypes of legal culture, as well as the legal and anthropological characteristics of individual social groups, which will strengthen the axiological effect of strategic planning.