Housing architecture, which emerged in different ways according to the environment in ancient times, with the aim of protecting from precipitation, cold weather and wild animals, has taken more different forms with the needs arising from necessity in every period of history. The residential architecture, which was affected by the economic, cultural and social changes of the period, took its current form by being influenced by all the changes of the time it was built. In Azerbaijan, with the effect of oil revenues in Baku, which became economically rich at the end of the 19th century, a significant number of architectural works emerged, primarily residential buildings. From this point Western influences in Baku architecture have also manifested themselves in residential architecture since the end of the 19th century. This has generally been achieved with the contributions of German and Polish architects. In this study, some examples of Polish architect Jozef Ploshko's residential buildings in Baku, who have an important place in the modernization process of Baku architecture, will be selected and examined in terms of plan, interior and facade features, and it will be tried to obtain information about the architect's residential buildings.