The objective of this study is to investigate the consciousness of demanders (of K-Apartments) in order to determine the institutional measures required to provide demanders with relevant information about housing choices and spread awareness of the Housing Performance Indication System (HPI) among the society. The conclusion is as follows : (1)The actual condition has showed that while demanders have purchased houses to add to their private property, and they were required to assume significant financial burden in doing so. Moreover, at present, demanders have been fully dependent on suppliers to obtain relevant information about expenses and housing choices. Further, more than 40% of the surveyed demanders have mentioned that they were unaware of the HPI system. (2)We found a number of relevant problems that demanders face when seeking reasonable housing choices, which involve factors such as the “demander's consciousness of the real value of a house,” “social circulation of information about quality,” and “to provide demander with information about quality by suppliers”. (3)To diffuse the HPI system, the following three institutional measures are required, each of which covers a different aspect: a) management to spread the HPI system among the society; b) maintenance to improve and inspect the HPI system; c) consolidation to spread awareness of the HPI system and circulate the performance information among the society.