This study employs the data from real estate transactions provided by the Department of Land Administration. This study uses the Hedonic Price method and the Difference-in-Difference method to analyze the impact of indoor and outdoor properties on housing prices. In our study, the properties of floor space, stories, age, proximity to MRT stations, and proximity to elementary schools are important factors affecting the housing prices. The results estimated by Difference-in-Difference method show that the coefficient on homes within 500 meters distance of the MRT stations and the coefficient after MRT operating are both significantly positive on housing prices. Although the coefficient on the interaction term is positive, it is not statistically significant.