Groombridge 1618

Skipping over a bunch of typical red dwarfs in the 12 to 16 light year range, the next star to stand out from the herd is 16 light years out in the constellation Ursa Major.  A K5V like Epsilon Indi A, Groombridge 1618 appears to be only a billion or so years old, so life probably hasn’t had time to develop very much on any planets.  As well, it’s a flare star, which could actually help speed the evolution of indigenous life, but might not be particularly good for human settlers.  Metallicity is apparently around the same as Sol’s, although some sources think it may be higher.  A good candidate for a story where humans are terraforming a world, or one set in the far future where that work has already been done.