So when you look at all 3 of these together, it seems (to me) that this is definitely one of 2 things....

Either it is Jax and Carly's old house that was left abandoned and empty OR it is the place in LA that Franco set up like Port Chuck.  The pic on the couch with the baby is definitely the Jacks' old house (real or set up).  The one with Franco and a sleeping bag looks like the new Jack's house entryway.  And the one with him lying down with the toy looks like Liz's to me.  Any thoughts?