1731-2442 A private estate as an important unit of the urban-planning structure of the late nineteenth century – the early twentieth century and the significance of historical and architectural site plans in the preservation of the historical urban environment Orlenko Mykola author Ivashko Yuliia author President of the “Ukrrestavratsiia” Corporation Kyiv National University of Construction and Architecture Correspondence to: Mykola Orlenko Correspondence to: Yuliia Ivashko yulia-ivashko@ukr.net 13 09 2019 26/2019 2019 38 44 Copyright © 2019 2019 <p>The article deals with the issue of urban development at the Secession period, it reveals the role of a private estate as an urban-planning unit of the late 19th century – beginning of the 20th century, analyses the specific features of private estates in different cities of Ukraine. The role of the historical and architectural site plans in modern conditions for the preservation of the historical environment of the cities was determined.</p> 1 [1] Biriulov, Yu.( 2005) The Art of the Lviv Secession / Yu. Biriulov - L.: Centre of Europe, - 184 2 [2] Kyrychenko, Ye. I.(1982) Russian architecture of the 1830-1910s / Ye.I. Kyrychenko - M.: Iskusstvo - 400 3 [3] Prybieha Leonid (2009). Protection and restoration of the architectural and urban-planning heritage  of Ukraine: methodological aspect / L.V. Prybieha - K.: Mystetstvo. - 304. 4 [4] Skibitska, T. V. (2011). Kyiv Architectural Art Nouveau(1900-1910s) / The author of the introduction H. Dukhovnychyi / T.V.Skibitska. - L.: Centre of Europe.- 232. 5 [5] Tovstenko, T. D., (1984). Reconstruction of the Historical City Buildings/ Tovstenko, T. D. - K.: Budivelnyk. – 72.с.