Gameinformer has kindly revealed more information in regards to Skyhold in Dragon Age: Inquisition. The link can be found here

They said the following:

"You don’t start the game with Skyhold as your base of operations. For the early part of the adventure – before the Inquisition is even properly formed – you and your allies gather at the village of Haven."

"When you first reach Skyhold, it’s not in good shape,” Mike Laidlaw says. “There are holes in the roofs, it’s wrecked, you can’t even go to the entire castle because they haven’t cleared out the rubble yet." As well as this, we will have the pleasure of customising Skyhold.

With Dragon Age: Inquisition only a couple of months away, expect more details to arrive in the near future.