.11 Place of Business for Real Estate Broker.

The definite place of business required by Business Occupations and Professions Article, §17-507, Annotated Code of Maryland, shall be an office or headquarters where the real estate broker and the real estate brokerís employees regularly transact the business of a real estate broker. The records of the brokerage business, including the records of the escrow account, shall be kept in this office or headquarters. The Real Estate Commission may not consider an answering service, a mechanical message recording device or a mail drop, singly or in combination, to satisfy the requirements of an office under Business Occupations and Professions Article, §§17-517, 17-518, and 17-520, Annotated Code of Maryland.