Annotation: The basic fire safety requirements that must be met in new construction or reconstruction of buildings are considered. The list of regulatory documents regulating fire safety requirements for the construction of industrial, production and public buildings is given, in particular, attention is paid to buildings and institutions of social protection of the population. Examples from expert practice are provided that complicate the work of an expert when inspecting the objects of study and drawing up a conclusion. The inconsistencies that most often occur when performing research to determine compliance with building codes and fire safety regulations are indicated.