In Hakata District of Fukuoka City which is known as one of the most traditional merchant district, the sub-division system called "Taikou Machiwari" which was implemented in late 16th Century has been still the basis of urban infrastructure affecting the urban development and building forms on it. Following the recent trend of increasing of both apartment construction and population, this study aims to review the transformation of both block form types and lot form types, and to analyze the past 30 year trend of lot integration and apartment building layout form. As the results, this study constructs the typology of the lot integration and the apartment building form, and clarifes the relationship between them.
