If you know a Real Estate agent they can look it up online, however the information for that can be as old as 3 weeks. You can always go to the county and see the public records and those are usually up to date within a business day or two.
So Cal Homes Realty
951 821 8211
Cherry Hill, NJ
You can check the county records but then how do you know that is who you are talking to. A responsible home owner would have a property mananger if they were going to be outside the US and most probably out of the state. Trust your instincts!!!
I would proceed with caution but you can contact a Realtor to possible help you if you have one you have used in the past. Second you could contact a Title company and have them check for you but they may charge you for this information.
I am very surprised that the owners do not have a contact person in the area. Again I would be cautious.
Jerry A. Lorenz
Cell: 440 724 4402
My Blog: Jerryâ€™s Real Estate Blog