The modest building of the wing is hidden deep within the property and is not visible from the street. It is obscured by two main estate wings located along the red line of the street, forming the ceremonial courtyard of the urban estate.

Meanwhile, building 3 is part of a well-preserved historical estate known since the late 17th century, when there was a courtyard presumably belonging to merchant G.I. Parfenov. In the current central part of the Main House, two rooms from the turn of the 17th and 18th centuries have been preserved: a white-stone chamber with a brick vault and adjoining anteroom with an internal staircase to the second floor, of which only minor fragments of the walls remain. In the 17th century, the plot on Nikoloyamskaya Street, where the estate is located, was part of the "black" Alexeyevskaya sloboda, whose residents bore obligations to the land they occupied.

The wing at Nikoloyamskaya, 51, building 3 was constructed in the 1800s almost on the same axis as the main house as a non-residential service building, completing the formation of the estate complex.

During the fire of 1812, all the estate's buildings were severely damaged but were restored by 1817. At that time, the service wing was converted into a bathhouse and laundry, and this function was maintained until 1917. After the October Revolution, the estate was adapted for communal apartments and institutions.

The wing has retained its historical dimensions. The rectangular building is located along the eastern boundary of the property, and a passage connects its western facade to the main house. The facades have preserved their historical structure, and the volume is completed with a white-stone profiled cornice in the Empire style. The entrance to the building is on the southern side, but the historical interiors have not survived.

Among the owners of the estate was the wealthy merchant S.P. Vasilyev, who made significant renovations in the mid-18th century, adding two chambers to the right end of the house and likely raising the second floor. Later, the estate passed to merchant P.Y. Pishchalnikov, the owner of the neighboring plot No. 53, who replaced the old service buildings with stone wings and remodeled the facade of the Main House in the classical style. The service wing was built during Pishchalnikov's time. The modern appearance of the estate was acquired under merchant A.A. Skorospelov. Today, the estate houses the Seismological Center of the Institute of Geoecology of the Russian Academy of Sciences.

The service wing is recognized as a cultural heritage site.