At least once every 10 years, each planning commission shall review the comprehensive plan and, if necessary, revise or amend the comprehensive plan to include all: the elements required under Subtitle 1 of this title; and the planning principles set forth in § 1–201 of this article. The planning commission may prepare comprehensive plans for one or more geographic sections or divisions of the local jurisdiction if the plan for each geographic section or division is reviewed and, if necessary, revised or amended at least once every 10 years. A planning commission shall notify the Department of Planning when beginning a review in accordance with subsection (a) of this section. Within 60 days after receiving a notification under this subsection, the Department of Planning shall provide the planning commission with guidance materials relating to State laws, best practices for local comprehensive plans, and any other resources that may support the review, revision, or amendment of the comprehensive plan. The Department of Planning shall develop and maintain the guidance materials described in paragraph (2) of this subsection in consultation with other State agencies and offices as the Department considers appropriate.

To implement the plan, the planning commission shall periodically recommend to the appropriate public officials: programs for public structures, improvements, and land acquisitions; and financing programs.

At least once every 10 years, which corresponds to the comprehensive plan revision process under § 3–301 of this subtitle, a local jurisdiction shall ensure the implementation of the planning principles, the development regulations element, and the sensitive areas element of the plan. A local jurisdiction shall ensure that the implementation of the requirements of subsection (a) of this section are achieved through the adoption of the following applicable implementation mechanisms that are consistent with the comprehensive plan: zoning laws; planned development ordinances and regulations; subdivision ordinances and regulations; and other land use ordinances and regulations.

Subject to subsection (b) of this section, a local jurisdiction shall include in its comprehensive plan any plan element required under Subtitle 1 of this title in accordance with the review schedule for the local jurisdiction under § 3–303 of this subtitle. On request of a local jurisdiction and for good cause, the Department of Planning may extend the deadline under subsection (a) of this section for that local jurisdiction by no more than two 6–month extensions. A local jurisdiction that is not in compliance with this section after the deadline under subsection (a) of this section or after the expiration of any extension granted under subsection (b) of this section, may not change the zoning classification of a property until that local jurisdiction has complied with this section.