OK, basics for a Town include a town hall, tavern, and well; all of which should be provide at the initial start. As said, we are not starting from scratch, The town is there we just take over. Some of the things you need to consider, 1. farm land to feed your people (and supply the tavern with food), 2. shops to provide the supplies needed, and 3. what ever specific buildings you want to have. Examples: my tavern keeper is getting into cooking and brewing so I Have purchased a bakers kit and wine makers starter kit for use by her tavern (which is already there). I have bought a stable and a guild hall for use by the town. If we do not get a guild to move in, the Guild Hall will make an excellent market place, vendors workstations, and warehouse for goods. These are examples of my planning, not requirements that must be. Waiting to see just what you get and the lay of the land is not a bad idea. You just plan your town, there is no wrong answer.