The one-story stone service building of the Lopukhin estate, shaped like a G, was built in 1817 at the request of V.A. Lopukhin. This occurred after the estate on Prechistenka passed to his sons, Avraam and Dmitry. The service building, an integral part of any urban estate, typically does not stand out for its architectural features.

Like other structures of this estate, the service building is recognized as a cultural heritage site of federal significance.

The building is located deep within the Lopukhin property, opposite a two-story residential house that existed as early as 1816. The wing extends along the eastern boundary of the property. The northern part of the house was residential, and in 1896, according to the design of architect A. Ostrogradsky, a one-story stone structure with one apartment, a kitchen, and an entrance vestibule was added in the neoclassical style. In 1895, S.U. Solovyov also remodeled the wing along Lopukhin Lane. By the 1950s, Ostrogradsky's addition became part of the L.N. Tolstoy Museum and still retains its original appearance: the finish with large plaster rustication and window frames typical of the late 19th century. The entrance vestibule, small in size, was likely added later and does not belong to Ostrogradsky's design.

The part of the building constructed in 1817 was unused for a long time during the Soviet period due to its poor condition. Today, it looks as it did in 1834 when it was used as a residential space. The window openings with six-pane frames and the facade rustication have been restored based on original data, while the layout and interior finishes have been updated.

The part of the building that housed the stables was demolished in the mid-20th century and has not been restored.

Comprehensive repair and restoration work was carried out in the mid-1970s. The sketch project for the restoration and adaptation of the building for the needs of the L.N. Tolstoy Museum was developed by the Rosrestavratsiya trust under the guidance of architect E. Nasedkin. The work was completed in 1976, and the wing acquired the appearance of the late 19th century.

Currently, the service building houses the L.N. Tolstoy Museum.