Failing foundation leads to vent cover falling out
The hole on the right is where a vent cover should be, but due to settlement has fallen out. The large hole to the left is where the crawl space door access was but has also fallen out.
From the outside
You can see the crawl space door is no longer attached and is now leaning up against the crumbling foundation of this home. This is a perfect example of a foundation problem that should have been addressed when signs first began showing.
Another view of the outside of the foundation
Another view of the hole in the wall caused by foundation settlement.
Foundation Settlement
The cause of this massive hole in the foundation is due to settlement. This could have been avoided however if at the first signs of foundation settlement, sagging floors or cracks in the walls, the foundation was repaired.