PURPOSE : A method for operating a franchise business which assists purchase of real estate by applying a system which distributes a commission for assisting purchase of real estate is provided to take a commission distribution system between franchise networks which assist purchase of real estate, thereby providing a commission discount service for transactions. CONSTITUTION : The first transaction franchise store provides a service for assisting purchase of real estate to a corresponding customer. The first transaction franchise store inputs customer information and transaction details for the primary transaction to a head shop server. The customer pays a commission for the first transaction to a head shop. The head shop pays a commission to a franchise store which provides the primary transaction service. The head shop instructs to provide a service for the second transaction. The head shop provides the service for the second transaction to the customer.