This paper focuses on complex building with residence completed in the first half of 20th century in Dairen and aims to clarify the relationship between the characteristics of their planning and urban formation based on literature survey. This study positions them within the history of modern architecture and the urban formation in Dairen. As a result, their emergence was shaped by local architectural regulations and housing shortages. Consequently, ‘Building’, ‘Commercial Building’, and ‘Apartment House’ can be classified, and complex building with residence can be said to be a new type of building that emerged in Dairen in the 1920s.