This research is to present a systemic method for improving the current housing policy. Along the growth of national income, there has been a great demand for larger and better and apartments. In doing so, it will be possible to propose a more effective plan for apartment supply and stabilization of the housing prices. It is said that the home ownership rate of the Seoul Metropolitan Area is 90%. However, when the FLC which is more accurate is applied, the real rate turns out to be only 40%. Thus, it becomes clear hat most of mid and large size apartments (30 to 50 pyung) are in great demand. According to the data of the Bureau of Statistics, the number of those who want to buy mid and large size apartments (the group of the 40 to 64 years old) will gradually increase by 2022. The public policy for housing supply, therefore, should be re-formulated based on the pressing demand of the mid and large size apartments. Considering the real market situation today, it is logical to provide more long-term mid and large apartments to the public. I proposed a plan for stabilizing housing prices with 16 suggestions, I sincerely hope that the Seoul Metropolitan and the Central Government seriously consider my suggestions to work out the abnormality of the housing market of today.