Md. Code, Real Property § 9–204

(a) This subtitle applies to contracts subject to Title 17, Subtitle 1 of the State Finance and Procurement Article, known as the “Maryland Little Miller Act”, as well as property subject to § 9-102 of this title.

(b) This subtitle does not apply to:

(1) A contract for the construction and sale of a single family residential dwelling; or

(2) A home improvement contract by a contractor licensed under the Maryland Home Improvement Law.

(c) In this subtitle, “owner”, “contractor”, and “subcontractor” have the same meanings as in § 9-101 of this title.