The best method to find out if a person has a federal tax lien against their property is to call the IRS Centralized Lien Unit toll free number at (800) 913-6050. Customer care members will attend the call and clarify your queries. Another method to find the tax lien is to access the county accessor website. u00a0Most websites have these details in public. You can also visit the local assessor's office to get detailed reports. The easiest way is to search yourself on the IRS official website. Goto IRS Website, select Get a Transcript and then click Account Transcript. If the property has a federal tax lien, then the details will be listed there along with the date issued.