A warranty deed is a type of deed where the grantor (seller) guarantees that they hold clear title to a piece of real estate and has a right to sell it to the grantee (buyer), in contrast to a quitclaim deed, where the seller does not guarantee that they hold title to a piece of real estate.
A general warranty deed protects the grantee against title defects arising at any point in time, extending back to the property's origins.
[1] A special warranty deed protects the grantee only against title defects arising from the actions or omissions of the grantor.
A title search provides constructive notice of any encumbrances, easements, or restrictions on the property being conveyed, and is generally considered part of a buyer's due diligence in the process of purchasing real estate.
A warranty deed is not a substitute for title insurance because, if the grantor later dies or goes bankrupt, the grantee may not be able to exercise the warranty.