This paper aims at clarifying the activity of NPOs that support house owners in housing management and maintenance. The main way for date collection is Interview surveys with NPOs. The following results were obtained: 1) NPOs may function in different way from private sector and government, such as carpentry and barrier-free housing design for elderly or disability people, investigation, and help to find professionals. 2) Some consideration points for promoting the faculty of NPOs are pointed out, such as keeping a neutral attitude and a sense of morality, glowing social network between NPOs as well as with other sectors.
