Keep in mind with this discussion that these houses were sold from between 1908 and 1940. Korea's export-driven industrialization started in the early 60's, China not until the 80's.
That said, building codes are about creating safety and resiliency in structures, primarily as a safety issue. They've been around a very long time, with events like the 1886 Chicago Fire and the 1906 San Francisco Earthquake being drivers for big change.
There isn't much in terms of code to stop you from using crappy materials in a house, as long as they are safe.
That said, building codes are about creating safety and resiliency in structures, primarily as a safety issue. They've been around a very long time, with events like the 1886 Chicago Fire and the 1906 San Francisco Earthquake being drivers for big change.
There isn't much in terms of code to stop you from using crappy materials in a house, as long as they are safe.