No more haunted houses?

If you want a haunted house to play the Paranormal pack with, it is, as Asatoria said, a lot type. If you just want ghosts to haunt your regular home, it is as rlc77 said, a lot trait. 

When Paranormal came out and they added the Haunted lot type,  they changed what was the "haunted" lot trait to the "spooky" lot challenge.  Look under lot challenges.

Haunted House is a lot type, not a lot trait. So you need to change the lot type from residential to haunted house for it to work.