A method for real estate brokerage using a mobile device according to an embodiment of the present invention comprises the steps of : receiving input on member subscription including a unique ID of a seller or a lessor; receiving input on member subscription including a unique ID of a buyer or a lessee; letting the seller or the lessor register at least one real estate offering for sale or rent; letting the buyer or the lessee select a wanted offering among the real estate offerings; letting the buyer or the lessee select a request for meeting the seller or the lessor; if the selection of the meeting request is detected, receiving information on the meeting request from the buyer or the lessee; generating a notice using information on the real estate offering and information on the meeting request; displaying the notice on a seller terminal or a lessor terminal; letting the seller or the lessor select whether a transaction of the selected real estate offering is to be conducted; transmitting the selection for the transaction of the real estate to be conducted to the buyer or the lessee; making a real estate brokerage server provide a notice service; making the real estate brokerage server provide a chatting service for a predetermined duration; and making the real estate brokerage server provide a transaction mediation service.(100) Seller and lessor terminal(200) Buyer and lessee terminal(400) Real estate brokerage terminal(S110) Member subscription(S112, S115) Storage(S113) Member subscription(S122) Input a real estate offering(S124, S128) Transmit the real estate offering(S126) Store the real estate offering(S130) Select the real estate offering(S132) Transmit the selected real estate offering(S140) Request a meeting(S142) Input meeting request information(S144) Transmit the meeting request(S150) Generate a notice(S152) Transmit the notice(S160) Display the notice(S170) Approve/Reject(S172) Transmit the approve/reject(S174) Display the approve/reject(S182, S184) Emergency notice(S190) Notice service(S192) Chatting service(S194) Transaction mediationCOPYRIGHT KIPO 2014