Interesting concept, not sure if it would suit some though unless like minded and tolerant, see;

http://www.abc.net.au/radionational/programs/lifematters/would-you-live-in-a-share-house-at-65/6643390 

Cruising Cruze wrote:

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I keep telling my wife we've got 2 spare rooms we can open the house to share with a eighteen year old female

Funny she would not agree with me

No sense of humor I think

Cheers John

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Gday...

Perhaps the twins may be looking for a nice room or two ... perhaps you should see what Doug says.

Cheers - John