determining what's owed on a property

[Pat McCandless]

Is it possible to determine how much someone owes on a property through public records?  I am looking a property up in the Assessor's Office Records and it shows the Sales Information but shows the Sales Price is 0 for both.  The property was built in 1950, first sale was in 1956 for $0 and the next and final sale was in 2003 also showing $0.

Also, where would you go to see if there are any liens/taxes owed?