To me it looks like the Three Stooges did it.One trade opens a hole in the wall/foundation to make some repairs, they don't do hole repairs and leave it.Homeowner decides to just leave it, or stack loose rubble bricks back in the hole--thus saving cost of a proper repair job.This is an extreme brick problem: https://www.clickondetroit.com/news/defenders/2020/06/29/detroit-familys-home-collapses-as-landlord-refuses-to-answer-calls/

If you have a bunch of sections where the pipe has collapsed or shifted, you may have no choice but to dig it up.

A kid playing outside can break the window and you will collapse in tears. 

Sometimes more than just your clients show up for their VRBO . . . 
Horrifying moment balcony packed with party-goers watching sunset collapses 15ft onto rocks below at Malibu beach Vrbo rental leaving 10 injured

...

Even though I'm not watching TV I'm aware of it and feat currency slowly but steady is getting close to a collapse. 3 shortening the dollar idea was great, here it comes in mind the kyosaki ideas about money and assets so getting debt for assets makes complete sense if this assets cash flow and appreciate,  investors who over bid had in-house construction and great financing arrangements that make sense to over bid and narrow the profit margin. 

Yo Issac,I am in your same boat graduating college in one year, hearing all of the people signaling the end of the world, market collapses, and hyperinflation.

I got a hateful email from an attorney threatening to sue me because his client apparently attempted to move my slate pool table and it collapsed onto her foot. 

The collapse of the Florida condo should be a wake up call.

Recent article from the local news. https://abc11.com/death-toll-from-collapse-rises-to-24;-condo-to-be-demolished-sunday/10856454/

I have 2 two story properties adjacent to each other that are currently vacant and uninhabitable, the roof is collapsing and the wooden beams are rotting etc.