Kostanayev House, Regional cultural heritage building on Bolshaya Sadovaya Street, Rostov-on-Don, Russia

Kostanayev House is a building with Beaux-Arts elements on Bolshaya Sadovaya Street that spans multiple floors with ornate facades and decorative details. The ground floor spaces show a long history of different commercial uses that shaped the building over time.

The exact construction year is unrecorded; stylistic analysis places the building in the last quarter of the 19th century. Before 1917 it belonged to five members of the Kostanayev family, and from 1914 housed the G. V. and K. Berezhnov trading house. In the 1920s the Alzan partnership shop occupied the ground floor, followed by Gorkooptorg shop No. 8 and a record and gramophone shop.

The ground floor housed shops whose names are documented: the Gavrilov haberdashery, the Blandov brothers' grocery, Dm. Smirnov's gold and silver goods, and from 1914 the Berezhnov trading house. In the 1920s the Alazan partnership traded here, followed by Gorkooptorg shop No. 8 and a record and gramophone shop.

The building is located at the intersection with Semashko Lane and is easy to spot with its distinctive facade. The central location makes it simple for visitors to reach it during a walk through the historic streets.

The building is also recorded in some sources as the revenue house of A. A. Leonidov, and its exact construction year has never been fixed: the last quarter of the 19th century is assigned by analysis of its architectural style. Its western wall abuts the Yablokov trading house.