legal ground
Article 7 of the Measures for the Administration of Real Estate Agents
The term "real estate brokerage institution" as mentioned in these Measures refers to an intermediary service institution established according to law and engaged in real estate brokerage activities. Real estate brokerage agencies can set up branches.
Article 11
Real estate brokerage institutions and their branches shall, within 30 days from the date of obtaining the business license, go to the competent department of construction (real estate) of the local people's government of the city or county for the record.