Md. Code, Housing and Community Development § 4–212

(a) In establishing the upper income limits for a family of limited income, the Secretary shall consider factors including:

(1) the income of the family available for housing;

(2) the size of the family;

(3) the cost and condition of available housing;

(4) the ability of the family to compete in the private housing market; and

(5) standards and definitions established for federal housing programs.

(b) The limits established under subsection (a) of this section may vary for different:

(1) types of housing;

(2) programs of the Administration; and

(3) areas of the State.

(c) A limit established under subsection (a) of this section may be supplemented for a particular project.