Actually, in other words, the answer has already been provided. And since you don't know, please don't spam the forums with posts that have no useful content addressing the original inquiry, especially when the answer has already been given.

YOU DO NOT RECEIVE PRESTIGE BASED ON YOUR TOWN HALL OR ANYTHING ELSE OTHER THAN THE AMOUNT OF PRESTIGE YOU ALREADY HAVE AND THE TASK YOU ARE PERFORMING THAT PROVIDES YOU WITH PRESTIGE.