# The Town and Country Planning (General Permitted Development) (Amendment) (Wales) Order 2013, Paragraph B.6: Interpretation of Class B


For the purposes of paragraph B.1(e)—
(a) measurement to the eaves is to be made to the point where the external walls of the dwellinghouse would, if projected upwards, meet the lowest point of the upper surface of the roof; but
(b) no account is to be taken of any parapet wall or any part of the roof surface which overhangs the external walls of the dwellinghouse.

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Source: https://www.legislation.gov.uk/wsi/2013/1776/schedule/paragraph/B.6 (the official version)
Page: https://openlegislation.uk/town-and-country-planning-general-permitted-development-amendment-wales-order-2013/schedule/paragraph-B.6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.