Maryland Code, Business Regulation § 4.5-601

(a) Except for a building permit for construction to be performed directly by a landowner solely for the landowner's own use, the building and permits department of a county may not issue a permit for home building unless:

(b) Before issuing a permit for home building to a landowner, the building and permits department of a county shall obtain the signature of the landowner affirming that the permit is being issued solely for the purpose of the landowner performing work on the landowner's own property.

(c) Nothing in this section shall be construed to relieve a registrant from the obligation to obtain all other permits, licenses, and other authorizations for the construction of a new home.