You really need to follow the link and see the photos. Here are the first three paragraphs as enticement.
When in architecture school in St. Louis, I remember professors often saying that a building is salvageable until it’s town down. It just depends on the priorities of the community and the willingness to take on a challenge.
Take the above partially collapsed rowhouse in St. Louis as an example. If this building were in Louisville, it would likely have been torn down soon after it suffered the collapse, but in St. Louis, demolition requests were denied and the structure was renovated as seen in the photo below.
While this example is in the up-and-coming Lafayette Square neighborhood of St. Louis, there are also examples of similar renovations in in less well off neighborhoods with similar result. Based on these examples, it seems like demolitions like these shouldn’t have ever happened.