Md. Code, Real Property § 9–305

This subtitle does not:

(1) Affect the rights of contracting parties under Subtitle 1 of this title;

(2) Apply to a contract for the construction and sale of a single family residential dwelling;

(3) Apply to any transaction under the Custom Home Protection Act, Title 10, Subtitle 5 of this article; and

(4) Apply to a home improvement contract by a contractor licensed under the Maryland Home Improvement Law.