what is a warranty deed
Although many types of deeds exist, title is usually transferred by a warranty deed. A warranty deed provides the greatest protection to the purchaser because the grantor (seller) pledges or warrants that she legally owns the property and that there are no outstanding liens, mortgages, or other encumbrances against it.
n. a deed to real property which guarantees that the seller owns clear title which can be transferred (conveyed). A grant deed generally is a warranty deed, while a quit claim deed is not. (See: warrant, grant deed)