Special aspects of the two-year (2018–2019) geotechnical monitoring for the parking buildings in use and their deformational behavior are presented in the article. In 2005, open-type car parks No. 1 and No. 2, fell into the inflence zone of a two construction projects, a railway line construction, which connects Vnukovo-1 airport and Kievsky railway station in Moscow, and construction of the new Vnukovo-1 airport building.The article discusses tasks to ensure serviceability of existing buildings. Geotechnical monitoring during building operation allows for a timely documentationof negative processes occurring in building structures and to make prompt decisions to prevent emergencies. Geotechnical monitoring is carried out according to a specially developed program that includes a set of works using various methods. This allows us to assess the state of the supporting structures of the monitored buildings to ensure their strength, reliability, and safe operation.