I don't recognize that building and I've been doing 15 mm for a LONG time. (though not Napoleonic). Perhaps try posting in the Napoleonic, Age of the Big Battalions, oriented page to see if you have better luck.
If you do find out who makes these figures and they are still available, I'd be interested. Buildings are one of the few things I am still looking to add to my collections - and if I find that one you are looking for I'd buy it, I like it too.
Good luck.