The author of this article focused on the forms of registering court experts and experts in administrative proceedings (administrative experts). She outlined her understanding of registering and the form(s) it takes for these experts. She also addressed the concepts of court experts, administrative experts, tax experts, and property appraisers. She also outlined the form of registering property appraisers and tax experts. She also presented her own analysis of selected regulations issued by municipal/city authorities, starosts, and voivodes regarding the lists of property appraisers.