Md. Code, Insurance § 19–107

(a) An insurer may not refuse to issue or renew a contract of motor vehicle insurance, property insurance, or casualty insurance solely because the subject of the risk or the applicant’s or insured’s address is located in a certain geographic area of the State unless:

(1) at least 60 days before the refusal, the insurer has filed with the Commissioner a written statement designating the geographic area; and

(2) the designation has an objective basis and is not arbitrary or unreasonable.

(b) A statement filed with the Commissioner under this section is a public record.