A single office pin cannot hold the map from Johns Creek to East Atlanta
Map results are anchored to where your office physically sits, and one address in a metro this wide leaves most of your service area invisible.
Google's local results weight how close the searcher is to your verified address. An office in Sandy Springs will show reliably for Dunwoody and Brookhaven searches. It will rarely show for an owner searching in Marietta, and almost never for one in Snellville.
Firms respond to that in two ways. Some open real staffed offices in a second or third county, which works but costs real money and has to be a genuine place of business. Others accept the map limit and put their effort where proximity matters less.
Classic organic listings are the honest answer for most firms. A page written specifically for owners in Alpharetta can rank in the ten blue links regardless of where your desk is, and it can carry far more detail than a map profile ever will.
Do not rent a mailbox and call it an office. Listings built on addresses that are not staffed generally get suspended, and losing a verified profile costs more than the extra pin was worth.