A flat fee real estate agent will list your home for a flat fee, saving you up to 50% -of the traditional cost of selling a home. There are several options you can choose when you?re looking for a flat fee agent. There are brokerages that only do flat fee listings, agents who just list your home and offer no additional service, and there are some agents that run a traditional business, but will also take a flat fee listing on the side if they are referred from Clever.