In 1772 it became part of Russia, as the center of the county in the province Rogachev, then borough, and parish center of Rogachev district. In 1774 Catherine II of Russia in collaboration with a local governor helped build the town hall, churches, a theater, 2 hospitals, and other notable buildings. Redevelopment of the city took place, with the destruction of the castle and the fortifications, which were mentioned more in the "Census" Chachersk for 1765. There are two surviving unique sights of the 18th century - the Holy Transfiguration Church and Town Hall in Chachersk. The Holy Transfiguration Church was built in classicism style 1783 and has international architectural worth.