A warranty deed guarantees that a seller owns the property free and clear of liens. Special Warranty Deeds are commonly used in commercial real estate transactions and are also instrumental in transferring property into a trust.A general warranty deed guarantees a property has no liens against it and the seller holds full ownership, giving them the legal right to transfer it. A warranty deed transfers your ownership and explicitly promises the buyer that you have good title to the property. A Warranty Deed is the best type that a purchaser of property can get. A warranty deed or quit claim deed TRANSFERS TITLE or OWNERSHIP of real property. A warranty deed is a deed where the person granting the deed agrees to defend the title from claims of others. Unlike general warranty deeds, special warranty deeds create no greater risk than before the property was transferred into the trust. A Warranty Deed guarantees that a property's title is free from encumbrances while transferring its ownership. A warranty deed is a legal document that is used when transferring ownership of property from a grantor (seller) to a grantee (buyer).