The article examines the features of conducting a search in the investigation of the legalization (laundering) of criminal proceeds committed through fictitious legal entities. Based on the analysis of judicial practice, it is argued that the search occupies a central place among the initial investigative actions, since it makes it possible to seize without delay the material and electronic carriers that testify to actual control over the organization and the movement of assets. The preparation for the search, the determination of the objects to be seized and the places of its conduct, the evidentiary significance of what is found, and the use of the search results are revealed. Practical recommendations are formulated with regard to the legislation and judicial practice.