[estsauver]

This was extremely common as a scam in Kenya, the solution there was an extraordinarily simple tactic:

Put up a big "This property is not for sale" sign on the land.

[DanHulton]

I was wondering why that wasn't mentioned once!

The first realtor to walk the land would have noticed that sign in a hurry, I figure.

[Cthulhu_]

But if the scammer lives nearby, wouldn't they just show up and remove the sign? Or pay someone to remove it.