Md. Code, Real Property § 14–202

(a) A lien on property may be created by a contract and enforced under this subtitle if:

(1) The contract expressly provides for the creation of a lien; and

(2) The contract expressly describes:

(i) The party entitled to establish and enforce the lien; and

(ii) The property against which the lien may be imposed.

(b) A lien may only secure the payment of:

(1) Damages;

(2) Costs of collection;

(3) Late charges permitted by law; and

(4) Attorney’s fees provided for in a contract or awarded by a court for breach of a contract.