Grade II listed 6-bed farmhouse for £395k: what's the catch?

A Grade II listed farmhouse is up for sale. Despite having six bedrooms, and sitting amidst landscaped gardens, an orchard and a lake, the property is listed in the auction catalogue for a snip at £395,000. It's about a quarter of the price you'd expect for a property of this type in Wiltshire.

So what's the catch?
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