Maryland Code, Land Use § 5-301

(a)(1) Except as otherwise provided in §§ 9-603, 9-806, 9-1004, 9-1605, and 9-1606 of this article, an owner or agent of an owner of land located within a subdivision may not transfer, sell, or agree to sell land by reference to, exhibition of, or other use of a plat of a subdivision before the plat has been:

(2) A person who violates this subsection is subject to a civil penalty of not less than $200 and not exceeding $1,000 for each violation.

(3) Each lot or parcel transferred or sold or agreed to be sold in violation of this subsection is a separate violation.

(1) enjoin the transfer, sale, or agreement in any circuit court; or

(2) recover the penalty by civil action in a court of competent jurisdiction.