Finance is a significant part of any individual's life. The accessibility and quality of finance is an outcome of the financial intermediating infrastructure, and largely influences household welfare. This dissertation aims to understand how the detailed architecture of financial intermediation affects household finance in their real estate investment. Mortgage finance plays a crucial role in the US economy and there is significant government intervention. What are the consequences of different types of government intervention in the US housing market is a central question, especially after the Great Recession. While much effort has been devoted to understanding government guarantee programs which aim to facilitate the secondary market of m...