63.—(1) The authority referred to in section 61(1)(b) or 62 is—
(a)the council in the case of planning permission granted by it;
(b)the Department, in the case of planning permission granted by it;
(c)in the case of planning permission granted under section 58, 60 or 145, the planning appeals commission;
(d)in the case of planning permission deemed to be granted under paragraph 3(1) of Schedule 8 to the Electricity (Northern Ireland) Order 1992 (NI 1) (consents under Articles 39 and 40 of that Order), the Department of Enterprise, Trade and Investment.
(2) For the purposes of sections 61 and 62, development shall be taken to be begun on the earliest date on which any of the following operations comprised in the development begins to be carried out—
(a)where the development consists of or includes the erection of a building, any work of construction in the course of the erection of the building;
(b)where the development consists of or includes alterations to a building, any work involved in the alterations;
(c)where the development consists of or includes a change of use of any building or other land, that change of use;
(d)where the development consists of or includes mining operations, any of those operations.
(3) For the purposes of section 62(2), a reserved matter shall be treated as finally approved when an application for approval is granted, or, where on an appeal under section 58, the planning appeals commission grants the approval, on the date of the determination of the appeal.
(4) Where a council grants planning permission the fact that any of the conditions of the permission are required by this Act to be imposed or are deemed by this Act to be imposed, shall not prevent the conditions being the subject of an appeal under section 58 against the decision of the council.
(5) Where a planning permission (whether outline or other) has conditions attached to it by or under section 61 or 62—
(a)development commenced and carried out after the date by which the conditions of the permission require it to be commenced shall be treated as not authorised by the permission; and
(b)an application for approval of a reserved matter, if it is made after the date by which the conditions require it to be made, shall be treated as not made in accordance with the terms of the permission.