Maryland Code, Business Regulation § 8-503

(a) As an inducement to make a home improvement contract, a person may not promise or offer to pay to an owner any compensation or reward for obtaining or placing home improvement business with others.

(b) A contractor or salesperson may not offer, give, or pay to an owner a gift, bonus award, merchandise, trading stamps, or cash loan as an inducement to make a home improvement contract.

(c) To advertise or to promote sales, a contractor or salesperson may give to a prospective customer a tangible item if: