Md. Code, Land Use § 23–206

In Prince George’s County, the subdivision regulations may provide for:

(1) the classification of a subdivision as a major or minor subdivision; and

(2) a sketch plan that:

(i) in the case of a minor subdivision, may be approved by the planning director and filed as the record plat; and

(ii) in the case of a major subdivision, may be required before the submission of a preliminary plan of subdivision.