We set out a questionnaire to residents in multiple dwelling houses on their habitability and how they should live. The answered questionnaires were collected 66%. They live in 16 housing estates (3634 dwellings in all), built after around 1985, which are generally regarded as having a standard building performance as a multiple dwelling house. The results of the questionnaire may be summarized in that the residents personally have a favorable impression on their houses and are satisfied with them in general. With respect to sound environments, we notice that the improvement of sound insulation performance of dwelling units in late years, in addition to the residents for themselves know how to manage the sound problem, both of which are very useful for the improvement of living environments in a multiple dwelling house. On the other hand ,about 30% of residents are concerned about sound problems. In particular they still complain of floor impact sounds, implying the necessity for increasing sound insulation in building design against the problems.