This paper concerns on the effects of lopsided regional policy and social prejudice on homeownership disparities by household's place of birth in Seoul. The present study utilizes micro-level census data (2% sample) to evaluate households' residential well-being denoted by homeownership status during the period of 1980-1990. Decomposition techniques along with sample selection model were used to provide evidences of the home ownership disparities caused by regional policy and prejudice. While the previous studies ignore the possibility of biased estimates of homeowenrship disparities due to sample selectivity and length of residence, the present study adopts a bivariate probit model that can avoid the bias of selectivity and years since arrival in Seoul. As did in the previous studies, we found that recent migrants from Honam provinces represent a disproportionately small percent of homeownership ratio compared with people originated from Yeongnam and Chungcheong. The result is in general matched with those in the previous studies in regional disparity analyses. While most of the disparities in homeownership ratios between households from Youngnam, and households from Honam and Chungcheong are due to the residual differences, the proportion of residual difference is much lower for the relationship between Youngnam and Chungcheong than that between Youngnam and Homan. The present study summarized that place of birth showed some effects in determining whether or not recent migrants own their home in Seoul.