The special warranty deed is not nearly as protective of the buyer as is the general warranty deed. The grantor of a special warranty deed conveys the property with two warranties:
The grantor warrants that they have received title.
the grantor warrants, unless noted specifically in the deed, that the property was not encumbered during their period of ownership.
The grantor of the special warranty deed, in effect, only warrants the title against their own actions or omissions. They warrant nothing prior to their taking title. If specifically stated in the deed, other warranties can be conveyed. Special warranty deeds are frequently used by executors and trustees.