There is no specific designation, "Certified Buyer's Agent."
Some people like to use agents who only represent buyers, and never list homes, and there are designations for people who have attended class to further their education. "Exclusive Buyer Agent" is one association. Some agents also have an ABR designation, i.e., "Accredited Buyers Agent."
I am in the group that thinks a great agent is skilled at working either side of the table, and understands the perspectives of both sellers and buyers.
Hi, Joyce, No, no one is required to use an agent. However, when buying or selling property, it is often wise to have someone in your corner representing your interests. A skilled real estate agent can help you not overpay, learn more about details of the property, and bring you value through their experiences with many prior clients.