Recently, the detached houses, especially the three-story detached houses in a small housing lot have been increasing in the metropolitan inner area. This paper examines the characteristics of the three-story detached house in a small housing lot in the densely built-up area, focusing on its resident's evaluation of the house and the neighborhood environment. The case study area is Minato and Minato-Nishi district in Sakai City where is the one of the typical densely built-up areas in the inner area of Osaka Prefecture. We conclude that the people living in the three-story detached house in a small housing lot tend not to be satisfied with their house and the neighborhood environment in comparison with the people living in the two-story detached house in a medium-scale housing lot.
