Hi Bootleg,
As Jo has said, there is no easy way to do this.
I believe that there used to be people on this board who could give you advice for certain areas, but the threads aren't showing up when I search, and in any case they were area specific.

What I would recommend is finding a gestor who can help you with this. A local gestor will usually have ways of finding out who owns a property and contacting them on your behalf.