Md. Code, Tax - Property § 8–220

(a) The General Assembly states that it is in the public interest to provide for the development of lands in a planned manner.

(b) The development of lands in a planned manner is necessary to:

(1) obtain economic and environmental benefits;

(2) relieve economic pressures that result from the assessment of planned development land at levels inconsistent with planned development;

(3) aid the assembly of land for planned development land;

(4) facilitate cooperation among landowners; and

(5) permit holding of planned development land in an undeveloped status for orderly and staged improvement, particularly for the development of new communities.