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There are currently no known outstanding effects for the The Town and Country Planning (General Permitted Development) (England) Order 2015, Paragraph AA.1.
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AA.1. Development is not permitted by Class AA if—
(a)permission to use the dwellinghouse as a dwellinghouse has been granted only by virtue of Class [F2G,] M, [F3MA,] N, O, P, PA or Q of Part 3 of this Schedule (changes of use);
(b)the dwellinghouse is located on—
(i)article 2(3) land; or
(ii)a site of special scientific interest;
(c)the dwellinghouse was constructed before 1st July 1948 or after 28th October 2018;
(d)the existing dwellinghouse has been enlarged by the addition of one or more storeys above the original dwellinghouse, whether in reliance on the permission granted by Class AA or otherwise;
(e)following the development the height of the highest part of the roof of the dwellinghouse would exceed 18 metres;
(f)following the development the height of the highest part of the roof of the dwellinghouse would exceed the height of the highest part of the roof of the existing dwellinghouse by more than—
(i)3.5 metres, where the existing dwellinghouse consists of one storey; or
(ii)7 metres, where the existing dwellinghouse consists of more than one storey;
(g)the dwellinghouse is not detached and following the development the height of the highest part of its roof would exceed by more than 3.5 metres—
(i)in the case of a semi-detached house, the height of the highest part of the roof of the building with which it shares a party wall (or, as the case may be, which has a main wall adjoining its main wall); or
(ii)in the case of a terrace house, the height of the highest part of the roof of every other building in the row in which it is situated;
(h)the floor to ceiling height of any additional storey, measured internally, would exceed the lower of—
(i)3 metres; or
(ii)the floor to ceiling height, measured internally, of any storey of the principal part of the existing dwellinghouse;
(i)any additional storey is constructed other than on the principal part of the dwellinghouse;
(j)the development would include the provision of visible support structures on or attached to the exterior of the dwellinghouse upon completion of the development; or
(k)the development would include any engineering operations other than works within the curtilage of the dwellinghouse to strengthen its existing walls or existing foundations.]
Textual Amendments
F1Sch. 2 Pt. 1 Class AA inserted (31.8.2020 at 9.00 a.m.) by The Town and Country Planning (General Permitted Development) (England) (Amendment) (No. 2) Order 2020 (S.I. 2020/755), arts. 1, 3(2)
F2Word in Sch. 2 Pt. 1 Class AA para. AA.1(a) inserted (1.8.2021) by The Town and Country Planning (General Permitted Development etc.) (England) (Amendment) (No. 2) Order 2021 (S.I. 2021/814), arts. 1(1), 3(2)(b) (with Sch.)
F3Word in Sch. 2 Pt. 1 Class AA para. AA.1(a) inserted (21.4.2021) by The Town and Country Planning (General Permitted Development etc.) (England) (Amendment) Order 2021 (S.I. 2021/428), arts. 1(1), 4(b) (with art. 15(3))
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