The second photo of the lot is entitled: "Site for construction of 'The Palace' for the new Dark Shadows film."
I'm not entirely sure what the central conflict of the film is, not at all. Not like you can say "Alice is about the little girl returning to Wonderland to help overthrow the evil Queen of Hearts" or "Sweeney Todd is about a wronged madman seeking vengeance" etc.
Depp's part in the film should wrap before actual shooting ends because Thomas McDonell, who'll play the young Barnabas, has said that all the stuff with him is what's being shot last. He's also the one that said he wouldn't start shooting until the fall. But then, he also said that filming had begun weeks before it actually had, so his time frame for when he's expected to shoot could also be off.
The Palace at Collinwood, eh? Kind of shaped like Carey Mansion, imo.
I am a little surprised they would build a set for the exterior of Collinwood, because there must be dozens of real homes in that part of England which could represent Collinwood wonderfullly.