Fixing or replacing a concrete footing
If an old footing has sunk or tipped, the first question is whether the concrete itself is still sound. A solid footing that's dropped can sometimes be brought back up with foundation raising, which saves tearing out what sits on it. A cracked, crumbling or undersized footing is another story, and I'd rather replace it than prop it up, because a footing that was too small or too shallow the first time usually keeps moving.

