I’m back with my Northern Virginia market stat recap for December, which looks a lot like November. As I did last month, I’ve added 𝐌𝐎𝐍𝐓𝐇𝐒 𝐨𝐟 𝐒𝐔𝐏𝐏𝐋𝐘. The 𝘮𝘰𝘯𝘵𝘩𝘴 𝘰𝘧 𝘴𝘶𝘱𝘱𝘭𝘺 stat gives a projection of how long properties will sit on the market before being sold. Arlington County In Arlington County, closed sales…