OK, so if the roofs buggered things could get bad so let's put a conservative £20k in for that, and £15k for rewire. Learn to plaster and you'll spend £1500, get someone in and you'll spend £10k.
Maybe another £15k to sort out the plumbing, maybe more. Depends what's going on with all that damp.
Then it's what, £20k in kitchen and bathroom if you're good at bargains.
And a further £20k in misc ie you doing eeeverything else just spending on materials etc and not moving any walls around and presumably all your furnishings will fit in so you don't need new ones.
So basically as long as you don't mind not having double glazing and doing a massive amount of work yourself and don't have any grand ideas involving steel or polished concrete etc I reckon you could get it really amazing in about five years for a hundred grand.
How adorable is it that they've displayed all those plates so nicely in the kitchen, like 'look! it's fine here! don't worry about the plaster situation!'