# The Town and Country Planning (General Permitted Development) (Amendment) (Wales) Order 2013, Paragraph A.2: Development not permitted


In the case of a dwellinghouse on article 1(5) land or within a World Heritage Site, development is not permitted by Class A if—
(a) it would consist of or include the cladding of any part of the exterior of the existing dwellinghouse with stone, artificial stone, pebble dash, render, timber, plastic, metal or tiles;
(b) it would consist of or include external wall insulation;
(c) the enlarged part of the dwellinghouse would have a single storey, would extend beyond a wall comprised in a side elevation of the original dwellinghouse and would—
(i) extend beyond the relevant part or, as the case may be, any of the relevant parts of a wall comprised in a side elevation of the original dwellinghouse by more than 3 metres; or
(ii) be set back, by less than 1 metre, from the nearest point in any wall comprised in the principal elevation of the original dwellinghouse; or
(d) the enlarged part of the dwellinghouse would have more than one storey, either in its own right or if considered together with any part of the existing dwellinghouse.

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Source: https://www.legislation.gov.uk/wsi/2013/1776/schedule/paragraph/A.2 (the official version)
Page: https://openlegislation.uk/town-and-country-planning-general-permitted-development-amendment-wales-order-2013/schedule/paragraph-A.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.