You just click on the address field (, well the part where the adress would be... it reads "No location; deliveries and home services only") in the dashboard and enter the new address. This will probably trigger a revalidation. There is no need to do that unless you specifically need or want to change the validation address (e.g. the new address is better, or the client is moving to and goint to target a different business area).
It's impossible to find out where a SAB was validated. You can sometimes make an educated guess about the general area, but that's it. At least I haven't been able to. I used to be able to zoom in somewhat, but that hasn't worked well in a while.
New advertising option:
A review of your product or service posted by a Sterling Sky employee. This will also be shared on the Sterling Sky & LSF Twitter accounts, our Facebook group, LinkedIn, and both newsletters.