A system and method of real estate inventory management includes providing, to a client system, data identifying one or more units of real estate that are available for sale; receiving a reservation request identifying a unit that is available for sale; receiving, at the server system, purchasing data for a reservation fee for the identified unit of real estate; processing a deposit in the amount of the reservation fee for the identified of real estate using the purchasing data; verifying that the deposit for the identified unit record processed; and updating the reservation status of the identified unit of real estate to indicate that the unit of real estate is not available for sale.