A lien search refers to an investigation into whether or not a specific property has any liens placed on it that could bar or complicate its sale. When it comes to lien searches, you have a variety of options that range from doing it yourself to hiring it out.   You can perform online or in-person lien searches on your own – through the appropriate county recorder – or can perform an online search with a third-party title service. Other options include hiring a title agent or real estate attorney.