In photos: Hillsborough's $100 million De Guigné estate

$100 million De Guigné estate comes with quite a contingency stair landing

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The De Guigné family has owned this 47-acre property for a century and a half. Its owner is finally willing to sell -- but the buyer isn't allowed to move in till the heir dies. Read more about the De Guigné estate and its surprising contingency on Yahoo! Homes' Spaces blog.

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