A bit more to worry you, sorry.     your house does not look old,whywas  it not finished ?   Was it Brit owned ?  Did it get officially stopped ? . Presumably no septic system, no power , no water storage ? I would try to cost those 3 major items plus cost of floors, render ,wiring, plumbing,kitchen , bathroom ,water heating (then double it ! )  The point being  ,that  what can you buy that is liveable for this amount of money .Special care if this is a permanent home for you.