@Simmerville, right now the town hall interactions are tied to the large building and involve some animations as sims exit the building so it would take a modder to untie that stuff before you could use the town hall on a community lot without actually having the whole building present and interactable, i.e. you can put it on a community lot if you want, but you wouldn't want it in the basement because your sims would still need to go up to it and 'into' the front door and a building that size would look really weird in a basement.
That said, you could certainly add the building to another town that way. And I'm hoping that some modder more talented than I am frees the interactions from the building and instead adds them to just a door or something, like what we got for TS3. That way you could build your own in whatever style fits the world you want to put it in.
Blows my mind that after all these years the Sim's team still ties stuff like this to a building rather than a door that we can use however we want. It's like they learn nothing from the past.
