Below is the information on where to locate Tax Liens

You can find records of Federal and state tax liens against individual and corporate taxpapers by searching ...
a. Lexis http://www.lexis.com/ in the LIENS library and/or
b. ChoicePointOnline http://www.choicepointonline.com/ and/or
c. KnowX.com http://www.knowx.com/ and/or
d. Westlaw http://www.westlaw.com/, which has records only for corporations and only in selected states.
Filing Offices: To find out where a Federal tax lien notice would be filed for a particular location, see the chart at Paragraph 38160.205 of the the CCH Standard Federal Tax Reporter.