The recording of property sales, mortgages, and foreclosures. See your local Registry/Recorder of Deeds. (More info)
I used the text based search to find the owner document:
Owner Document DB-20081216 0120525
for my house... The data rendered is a TIFF image, there's not any machine readable data as far as I can tell. But I can find information on properties and their ownership.
- No data
|Date the data became available||Unknown|
|Format of data||Unknown|
|Last modified||Sat Feb 21 2015 21:58:55 GMT+0000 (UTC)|