He says: ' The house is what in English apparently is called an allotment.'
In the UK, allotments are about 250 square metres, and can only have a small shed on them that does not having running water or electricity. They are specifically considered 'temporary' structures, and you are not allowed to live in them.
The 'house' he shows, is massive compared to a 2.5m x 2m shed you typically see on British allotments.
That said, kudos on converting it into a liveable home. If only this option was more available to zero-income or homeless people....