This article discusses the restoration of a historical building, which is an extremely responsible and important work to preserve the valuable Fund of historical buildings in Moscow. With the participation of the author, the work was performed to diagnose the technical condition of the historical building and develop technical solutions for restoring structural elements of the building that have lost their original properties. A set of measures to determine and evaluate the actual values of controlled parameters that characterize the performance of the object of inspection and determine the possibility of its further operation, reconstruction or the need to restore, strengthen, repair, and includes a survey of the soil base and building structures to identify changes in soil properties, deformation damage, defects of load-bearing structures and determine their actual load-bearing capacity.