Md. Code, Business Occupations and Professions § 3–403

(a) Except as provided in subsection (b) of this section, a corporation, limited liability company, or partnership shall hold a permit issued by the Board before the corporation, limited liability company, or partnership may operate a business through which architecture is practiced.

(b) A corporation, limited liability company, or partnership may provide architectural services for itself or for an affiliated corporation, limited liability company, or partnership without a permit issued by the Board.