The island, which is linked by a narrow causeway to the bigger island, comprises eight hectares of rolling fields and woodland, with views in all directions over the surrounding waters, according to the advert on the Boliga website.
The farmhouse, which was built in 1894 and extended in 1930, is an ample 156m2 and the farm area also has a stable, barn, and a small pond.
When it was last sold, back in 2009, the island went for just 1.8m kroner.
The most highest price ever fetched by one of Denmark’s smaller island was the DKK 32.5m paid by the businessman Kurt Poulsen, when he bought the island of Siø between Langeland and Tåsinge.
Unusually, Langø is not the only Danish island currently for sale.
According to the online property site Boliga, the island of Masnedø Kalv in the waters between South Zealand and Lolland-Falster is also currently for sale with an offer price of 8.3m kroner.
The island, which is less than a third the size of Langø, was initially also for sale for 10m, but the price was reduced when no buyers came forward.