Volumetric-block construction has many advantages compared to traditional construction. Still, its development is hampered by the lack of experience and information on the construction and design of modular buildings, and the lack of construction regulations with their clear classification. This work aimed to accumulate and systematize experience in the field of volume-block construction to create an unambiguous classification of modular buildings. The research was conducted using the general scientific method of analysis, synthesis and classification of information. The review systematized data on existing classifications and terms in the field of modular construction. The classifications by functional purpose, by materials used, by design features, as well as types of modular connections are considered. The experience of volume-block construction is also widely studied.