Md. Code, Family Law § 5–509

(a) Except as otherwise provided in this section, a person shall be licensed by the Administration as a child care institution before the person may operate an institution for the care, custody, or control of a minor child.

(b) This section does not apply:

(1) to an institution or facility that is operated by an agency of this State or any political subdivision of this State;

(2) to a child care home that has a license under this subtitle or under § 9–235 of the Human Services Article; or

(3) to an institution that accepts only children placed by the Maryland Department of Health or the Department of Juvenile Services.