If you are dealing with some ancient ruins, He was there when they crumbled. He knows every detail. He knows exactly how you've been affected, and His experience is reconstruction. After all, Christ was a carpenter by trade. Nothing has ever been allowed to crumble in a Christian's life or heritage that God cannot reconstruct and use."
When the ground beneath that foundation is corrupt, a relocation to new land is necessary. The finished product will be amazing, but during the building process, it can be frustrating to look out your window, expecting the same surroundings, yet disappointed because the view is entirely new and different.
It can be exciting, yet uncomfortable all at the same time. We have to learn to adjust to that new location, because it is there that the foundation is firm and solid.
When God allows a "building" in our life to crumble, it can often result in finding "cracks" in our foundations. God wants to restore, rebuild, and fill those places with Him.