4

• “aggregate number” means the aggregate of the number of houses constructed, in the course of construction, or proposed to be constructed, on the land concerned;

• “flat” means a separate and self-contained set of premises constructed for the purpose of a dwelling and forming part of a building from some other part of which it is divided horizontally;

• “house” includes a flat;

• “planning permission” does not include any outline planning permission in relation to which some or all of the matters reserved for subsequent approval remain to be approved; and

• “the land concerned”, in relation to any development, means—

  1. a

     except in a case to which sub-paragraph (2) or (3) applies, the land to which the planning permission for the development relates;

  2. b

     in a case to which sub-paragraph (2) applies, the land on which a particular phase of that development was or, as the case may be, is being or is about to be carried out;

  3. c

     in a case to which sub-paragraph (3) applies, the part of the land to which the permission relates on which a person has carried out part of that development, or, as the case may be, is carrying it out or is about to carry it out.