A warranty deed guarantees that a seller owns the property free and clear of liens. While a general warranty deed protects the buyer against all possible title defects, a special warranty deed offers a bit less protection for the grantee.Special Warranty Deeds are commonly used in commercial real estate transactions and are also instrumental in transferring property into a trust. A Texas Deed of Trust creates a lien on property to secure a Promissory Note. These are two documents needed for real estate loans and seller financing. A warranty deed is a legal document used in commercial real estate transactions to transfer property with a guarantee of clear title and buyer protection. A special warranty deed guarantees some protection for the buyer but not as much as a general warranty deed. A special warranty deed is the more limited of the two. The Texas Supreme Court has stated that there is no such deed as a "deed in lieu" and that such an instrument is in fact a warranty deed. In real estate, a special warranty deed is a legal document where the seller of a property warrants only against issues during their ownership.