Property Sharing - Search for OR users in my area

I am considering building a property sharing site for my area, but don't really have a good feel for how many users of OR I have in my area to know if this would be worthwhile.  Is there some way to search for owners in my area using OR so that we might build a network?

Unfortunately, there is not, and at present we don't have any plans to add such a function, because of the privacy implications.