Maryland Code, Real Property § 14-903

(2)(i) Purport to run with the land or bind subsequent bona fide purchasers;

(ii) Purport to create a lien, encumbrance, or security interest on the residential property of a party to the service agreement; or

(iii) Allow the service provider to assign or transfer the right to provide services under the service agreement to another person without notice or the consent of a party to the service agreement.