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Disclosure requirements in Europe are often weaker than in the U.S., so buyers should seek expert local advice on ground prone to shifting or flooding. They should also consider the cost of heating, maintenance and a caretaker to deter vandalism during the owner's absence. But all these costs are lower, in dollar terms, than they have been in decades. It's a great time for Americans with deep pockets to realize their dreams.
--With reporting by Stacey Vanek Smith/Paris