On the Clerk's office website ("Home Page" in SWGB's post above), go to "Public Records" and "Official Records." Search by the owner's name. Make sure they own the property they are advertising (some owners also rent for other owners). Then, look for the document type "LIS PEN." A Lis Pendens is the first document filed in a foreclosure case. Note the date, and you should also be able to see the case number.
Note that some owners will stop renting and pull their furniture out when they go into foreclosure, but I've seen owners rent right up to and actually after the date of Final Judgment.
And, lastly, travel insurance is
always a good idea in the remote chance the owner is less than honest, something happens to the house, or there is a tropical weather event affecting our area during your travel dates.