Serge only granted permition to Vergis after Amanda said so. I imagine any Graystone can allow or cancel access to the house.

Btw, liked a lot your review. I'm a true Caprica fan and this was one of the episodes I liked the most. My heart was aching with Daniel's pain (God, he was screaming loudly all the time, we just need give a look to him to notice) and I still can't understand why Zoe distrust (and kinda hate) her father so much.
Actually...what will she do when she gets to Gemenon? Has she any clue?