Rule C: Alterations and extensionsN.I.
The following are the notices to be given and the plans, sections, specifications and particulars to be deposited by a person intending to make any alteration of or extension to a building other than an alteration or extension which is exempted from these regulations:
(1) Notice of intention to alter or extend a building.
(2) In the case of alterations not involving any extension of a building—
(a)the plans and sections required by item 5 of Rule B of the alterations and of the building so far as affected by the alterations, so far as necessary to establish whether the proposals comply with these regulations; and
(b)a key plan showing the position of the site when it is not sufficiently identifiable from such plans.
(3) In the case of an extension of a building—
(a)the plans, sections, specifications and particulars referred to in items 2, 3, 4 and 5 of Rule B in relation to the extension as if the extension was the building therein referred to;
(b)the plans and sections as required by item 5 of Rule B of the building so far as affected by the extension; and
(c)the site investigation report where one has been produced,
so far as necessary to enable the district council to determine whether the proposals comply with the requirements of these regulations.