This is looking incredibly good, Sellenisko; and all the better because of the amazing use of in-game textures! It also fits very well with your style & the rest of your units.
However, I'm concerned about it's ingame usage; primarily in it's length & manner of construction. See, most of the regular "Town Halls" build "upon" themselves, getting taller or slightly wider, but no longer; that is probably due mostly to problems with pathing. Think of how this would be built; you place the first section (which is kinda small by itself, also), and then suddenly an equally-large section comes into being behind it when you upgrade. This would wreak havoc upon units (or, *eesh*, other buildings) behind it. Then again when it upgrades a 2nd time.
The alternative (having the pathing of the "lvl1 base" town hall the same as the "lvl3 full" town hall) might alleviate that, but then you have this rather small 'hut-like' building occupying a small portion at the front of the pathing/selection circle; blocking units from walking behind the physical geometry due to it's huge pathing (<- which is in preparation for it's FINAL FORM)...
Eh. Just kinda worried about it's usage in-game, dude. But the mesh & wrapping are excellent. Just my two cents. : )