Md. Code, Public Safety § 9–202

(a) Except as provided in subsection (b) of this section, this subtitle does not preclude a local jurisdiction from adopting more stringent standards to govern the installation of sprinkler systems in new construction.

(b) Industrialized buildings under the authority of the Department of Housing and Community Development in accordance with Title 12, Subtitle 3 of this article shall comply with the standard for the installation of sprinkler systems in residential occupancies as adopted in the regulations of the State Fire Prevention Commission.