Md. Code, Business Occupations and Professions § 13–704

(a) (1) A licensee may not display or allow to be displayed the agency license certificate at any location other than the principal office of the licensee, as specified in the certificate.

(2) A licensee may not display or allow to be displayed a branch office certificate at any location other than the branch office specified in the certificate.

(b) A licensee may not knowingly alter, deface, or destroy or knowingly allow the alteration, defacement, or destruction of an agency license certificate or branch office certificate.