The Town and Country Planning (General Permitted Development) Order 1995

[F1 Class B E

Textual Amendments

F1 Sch. 2 Pt. 1 substituted (E.) (1.10.2008) by The Town and Country Planning (General Permitted Development) (Amendment) (No. 2) (England) Order 2008 (S.I. 2008/2362), arts. 1(1), 3, Sch.

Permitted development E

B.   The enlargement of a dwellinghouse consisting of an addition or alteration to its roof.

Development not permitted E

B.1.   Development is not permitted by Class B if—

(a) any part of the dwellinghouse would, as a result of the works, exceed the height of the highest part of the existing roof;

(b) any part of the dwellinghouse would, as a result of the works, extend beyond the plane of any existing roof slope which forms the principal elevation of the dwellinghouse and fronts a highway;

(c) the cubic content of the resulting roof space would exceed the cubic content of the original roof space by more than—

(i) 40 cubic metres in the case of a terrace house, or

(ii) 50 cubic metres in any other case;

(d) it would consist of or include—

(i) the construction or provision of a veranda, balcony or raised platform, or

(ii) the installation, alteration or replacement of a chimney, flue or soil and vent pipe; or

(e) the dwellinghouse is on article 1(5) land.

Conditions E

B.2.   Development is permitted by Class B subject to the following conditions—

(a) the materials used in any exterior work shall be of a similar appearance to those used in the construction of the exterior of the existing dwellinghouse;

(b) other than in the case of a hip-to-gable enlargement, the edge of the enlargement closest to the eaves of the original roof shall, so far as practicable, be not less than 20 centimetres from the eaves of the original roof; and

(c) any window inserted on a wall or roof slope forming a side elevation of the dwellinghouse shall be—

(i) obscure-glazed, and

(ii) non-opening unless the parts of the window which can be opened are more than 1.7 metres above the floor of the room in which the window is installed.

Interpretation of Class B E

B.3.   For the purposes of Class B “resulting roof space” means the roof space as enlarged, taking into account any enlargement to the original roof space, whether permitted by this Class or not.]