OK, so I've played through the Dawnguard DLC several times as as Vampire Lord, and Finally decided to join the Dawnguard instead and have yet to finish the questline... My question is this: Is there a way to end up Owning or Using Castle Volkihar??? I was turned to a Vampire Lord so as to enter the Soul Cairn, so is it also possible to turn against the Dawnguard and join the Vampires instead of destroying them???
Thanks,
Evil Dave
I think the only way you can inhabit the Castle is to be the Vamp Lord. The drawback on that is as with the other "organizations", you'll be sent out to do, rather than you sending out others to do the job.
As far as switching sides? How far in are you? Is Harkon and his crew dead? If not, you might be able to get him to give you his "gift", or perhaps by Serana. If Harkon and his crew are dead, and you're a Vamp Lord, you might can occupy the Castle, but certain things won't be rebuilt within the Castle. And if he and his crew are dead, last I was in the Castle, and all were dead, anything you take is deemed a theft (this is on XBox).
I'd make a save, and go on with the plan to see how it plays out. In either case, Harkon will have to die. If you're a Vamp Lord, it'll be you who kills him. If you're Dawnguard, it'll be you.