Taiwan is situated in the seismic zone, where big and small earthquakes occur frequently; old buildings are vulnerable to the impact of earthquakes, so damage and collapses happen; with the issue of an aging society, the needs for barrier-free living environments are also increasing. One of our goals is to tackle potential disaster risks and promote the importance of "Regulations for Critical and Old Buildings" for improving the safety of buildings and ensure the safety of life and property of the people. It can also enable small communities not applicable to urban regeneration projects to be rebuilt, which is considered to be a workaround for improving earthquake resistance and meeting the needs of living in an aging society.