509931 Community Based Website

I am looking for a quote to develop a site which can be seperated into various sections/chapters based on zipcode or location. Each chapter would have their own message board, ad section and member section. The whole thing would be controlled by an admin who would post to a national section from which users could connect to their local area. Each local area would have it's own admin. Hope that makes sense. My budget is $250 tops. Do not bid unless you can give me something for this. Do not send me 40 links to sites you have done unless they are relevant. Do not overbid as it is a waste of your time and mine. Please ask questions is you have them prior to bidding.