# The Town and Country Planning (General Permitted Development) (Amendment) (Wales) Order 2013, Paragraph A.4: Interpretation of Class A


For the purposes of paragraph A.1(b)—
(a) in determining the height of the highest part of the roof of the existing dwellinghouse, no account is to be taken of any relevant structure projecting from that roof;
(b) in the determination of the height of the highest part of the dwellinghouse enlarged, improved or altered, account is to be taken of any relevant structure comprised in that part; and
(c) “relevant structure” means any parapet wall, firewall, chimney or other roof furniture or similar structure.

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Source: https://www.legislation.gov.uk/wsi/2013/1776/schedule/paragraph/A.4 (the official version)
Page: https://openlegislation.uk/town-and-country-planning-general-permitted-development-amendment-wales-order-2013/schedule/paragraph-A.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.