Authorities in Hamburg are selling off 50 little wooden houses used to house newcomers at the height of the influx of refugees and other migrants to Germany.

According to AP, the boxy houses measuring 28 square meters (301 square feet) in size were put up for sale this week. The property is being sold to interested buyers as potential guest houses, workshops, or sport/yoga venues.

The minimum bid price was 1,000 euros ($1,130), the news outlet noted. But interested investors have two challenges.

Image shows part of the refugee homes in Hamburg (Source: AP)

Apart from the 1,000 euros payment for each box, buyers need to have building permission to put the houses up and must collect them themselves.

Hamburg’s refugee coordination center told news agency DPA that there were around 100 queries about the houses on the first day alone. On Thursday, the center tweeted that the online ad had been taken down after about 48 hours and it will contact all applicants.