moika-palace:

Sazonov house. Built in the 1890s in Ostashevo, Chuchloma, Kostroma region of Russia.

The history of the house is a little convoluted and obscure. Though it is commonly know as Sazonov house, there is speculation that it was not built by the wealthy merchant Sazonov, but by a man named Markov. Ropet is also credited with the design of the house, but it is not clear whether the house, which is a lot simpler than its blueprints, was built by Ropet himself or an architect that borrowed or was influenced by his ideas and aesthetic.

Photo of the house pre-Revolution.

Blueprint by Ivan Ropet

(via Russkij Sever and Russia Trek)