Abstract
A detached house in Hokkaido has a relatively large living room as commonly used space for a family. The detached house residents do manifold and active daily activities for example receiving guests, drying clothes or handcrafting in the room, and it causes the confusion of living style in commonly used space. The purpose of this paper is to propose the forms and functions of the commonly used space by analyzing the existing forms of commonly used space and living styles in the space. This paper discusses the following problems; 1. The forms of commonly used space. 2. Daily activities in a living room as commonly used space. 3.The residents' appraisement and opinions about their living rooms. 4. Forms and uses of Renzoku-sitsu. (The Renzoku-sitsu means the room that has access to a living room. )
