The purpose of this study is to understand how real estate assets affect total asset inequality annually and how they affect real estate asset inequality by household type. By asset source, real estate assets have the most significant proportion, contribution rate, and elasticity compared to other sources. So the inequality of total assets could be said to be caused by the inequality of real estate assets. In addition, the inequality of real estate assets decreased during 2012-2017 but increased in 2017-2021, so it could be said that resolving the inequality of real estate assets is the most critical situation for resolving the inequality of total asset. And for the inequality of real estate assets by household type, the inequality between groups is high in location characteristics (residence in the metropolitan area) and housing characteristics (ownership, apartment residence), and within the group is mainly increased in household characteristics (old households, single-person households, and young households). The results that each household type affects the inequality of real estate assets in various ways suggests that different strategies such as resolving inequality within or between groups are needed depending on the kind of household.