The Town and Country Planning (General Permitted Development) (England) Order 2015 No. 596

SCHEDULE 2 E+W Permitted development rights

PART 14 E+W Renewable energy

Class F – installation or alteration etc of flue for combined heat and power on domestic premises E+W

Permitted development E+W

F.  The installation, alteration or replacement of a flue, forming part of a microgeneration combined heat and power system, on a dwellinghouse or a block of flats.

Development not permitted E+W

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

(a) the height of the flue would exceed the highest part of the roof by 1 metre or more; or

(b) in the case of land within a conservation area or which is a World Heritage Site, the flue would be installed on a wall or roof slope which fronts a highway.