Housing buildings are the most common and important architectural structures that reflect the culture and have been the subject of many studies. Housing research has always been a primary source of reference in analyzing the lifestyles of societies and their relations with economic, social, cultural, and environmental factors. Throughout the history, Düzce region has always been a place where people of different ethnic origins have come and settled for economic and social reasons. Mass migrations to the region had been continued until the beginning of the 20th century. Akçakoca district of Düzce has also been a settlement where multiculturalism can be observed intensely due to mass migration and being a trade port on the Black Sea coast. The historical Yukarı Neighborhood, located within the Akçakoca Conservation Site, is a region where families of mostly Turkish origin lived together since the past times. 33 traditional houses in this region, which were examined within the scope of the article, were investigated in the axis of Turkish House typology by using the Typological Analysis Method. During the research, it was occurred that there were some spatial alterations in the buildings, regarding the changing needs of the users. Therefore, both the ground and the first floors of the buildings were examined in order to distinguish the original sofa and room characteristics. It was observed that in general, the ground floors were designed as shops and utility roms, and the upper floors were used as residences. The buildings were examined depending on the spatial arrangement of the rooms and the use of sofas and iwans and were classified according to three main subtypes determined within the scope of the development stages of the 'Turkish House' typology in the literature. The research showed that the traditional houses in Akçakoca had maintained their 'Turkish House' typological characteristics in terms of spatial development uninterruptedly until the middle of the 20th century. This consistency reveals the result that the