Builder David Reed's mission was to construct a home for two families -- a young couple, their child, and the husband's retired parents.

So he built two homes in one. The rambler in Chisago City, Minn., has an owners' suite, full kitchen and living and dining room, plus a similar configuration on the walkout lower level where the parents live. It's a living arrangement that allows the families to share expenses and support each other.

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