One of the huge advantages of local area network for a borough would be shared messaging services.
A simple application would be public calendars - password protected - manage by both groups (eg. lift schemes, football practice, young mothers meetings) and sole proprietors who run an appointment based business (eg. hairdresser, plumber, repiar and installation).
Supporting viewing and reminder alerts through cell phones (SMS and 3G), PDAs, Web and iTV should be a design requirement for any CMS system used to deliver this kind of a service.