Singapore's home ownership framework has helped to create a large asset-owning population, with a strong work ethic oriented towards upward social mobility. As the value of HDB flats have generally risen over time, many flat owners would realise gains from selling their flats. The asset values of HDB flats are also preserved and enhanced through various estates renewal programmes funded by the Government. These asset values can be unlocked when owners sell their HDB flats on the open market.