In common law jurisictions, an implied warranty is a contract law term for certain assurances that are presumed to be made in the sale of products or real property, due to the circumstances of the sale. These assurances are characterized as warranties irrespective of whether the seller has expressly promised them verbally or in writing. They include an implied warranty of fitness for a particular purpose, an implied warranty of merchantability for products, and an implied warranty of habitability for a home.