As previously discussed, all land in Prince George's County is zoned, and the type and density of potential development is regulated by the terms of the various zoning categories. Before a land owner or developer can actually begin construction on his property, however, he generally must obtain approval of a plan of subdivision, and record plats in compliance with Subdivision Regulations (Subtitle 24 of the County Code). The Planning Board has full and final responsibility for administration of the Subdivision Regulations. In certain zones and when required by conditions of zoning approval, Conceptual and Detailed Site Plans must be approved. The necessary permits must always be obtained prior to the beginning of construction.