39.—(1) If it appears to the Department that it is expedient in the interests of the proper planning of an area (including the interests of amenity), regard being had to the development plan and to any other material considerations—
(a)that any use of land should be discontinued, or that any conditions should be imposed on the continuance of a use of land; or
(b)that any buildings or works should be altered or removed;
the Department may by order require the discontinuance of that use within such time as may be specified in the order, or impose such conditions as may be so specified on the continuance thereof, or require such steps as may be so specified to be taken within such time as may be so specified for the alteration or removal of the buildings or works, as the case may be.
(2) An order under this Article may grant planning permission for any development of the land to which the order relates, subject to such conditions as may be specified in the order; and the provisions of Article 38 shall apply in relation to any planning permission granted by an order under this Article as they apply in relation to planning permission granted by the Department on an application made under this Part.
[F1(3) The planning permission which may be granted by an order under this Article includes planning permission, subject to such conditions as may be specified in the order, for development carried out before the date on which the order was made; and planning permission for such development may be granted so as to have effect from—
(a)the date on which the development was carried out; or
(b)if it was carried out in accordance with planning permission granted for a limited period, the end of that period.]
(4) Before making an order under this Article, the Department shall serve notice on the owner and occupier of the land affected and on any other person who in its opinion would be affected by the order; and if within such period as may be specified in that behalf in the notice (not being less than 28 days from the date of service thereof) any person on whom notice is served so requests in writing, the Department shall afford to him an opportunity of appearing before and being heard by the planning appeals commission.
(5) Where the Department makes an order under this Article it shall serve a copy of the order on the owner and occupier of the land to which the order relates and on any other person who in its opinion would be affected by the order.
(6) Where the requirements of an order under this Article will involve the displacement of persons residing in any premises, it shall be the duty of the Northern Ireland Housing Executive, in so far as there is no other residential accommodation suitable to the reasonable requirements of those persons available on reasonable terms, to secure the provision of such accommodation in advance of the displacement.