A lien is a claim someone places on your property because (they claim) you owe that person money; having a lien can make selling your home more difficult, but not impossible if you have the right real estate attorney.
You Can't Solve a Problem in Ignorance
Before listing your home, do a title search, that will show any property liens outstanding. Don't let your buyer's real estate agent find it; that could kill your sale immediately. If you feel the lien was imposed in erro