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No, these aren`t really the homes of real hobbits, but this is leftover scenery from the filming of the movie the Hobbits! It is in New Zealand and I am surprised to see that they didn`t remove all signs of their filming. The property owner they used must have wanted to keep it for selling tickets to see the location where the film was made because you can get a tour of the place.
Image Source: http://laughingsquid.com/sheep-have-taken-over-hobbit-holes-on-the-lord-of-the-rings-set/