Elizabeth Smart
Haleigh
Caylee
Kyron
They were all searched. Then again... they either were abducted from the home, or family members were the focus of the investigation.
They did search Lindsey Baum's house.
I don't remember hearing about Kayleah Wilson's house being searched.
Both disappeared on the way to or from a friends house.
I think it depends on the LE agency. I think in most cases they would at least search the missing person's possessions. In the cases that they suspect foul play close to home, they generally search the whole house.
I personally think they had suspicions about this case from the beginning and that is why they searched the house. It was the last place Hailey was seen and they weren't so sure they believed Shawn's story. So searching the house was important.
It is also possible that something else was already being investigated that had been linked to the area. So they may have immediately had suspicions with this case for that reason. They may have immediately gone to




/trafficking/slavery of some kind.
I think there are several possible reasons why in certain cases they search the house immediately and in others they don't.