Paragraph 6C F1
(1)
The installation, alteration or replacement of a flue, forming part of a biomass heating system, on a dwellinghouse or building containing a flat.
(2)
Development is not permitted by this class if–
(a)
the height of the flue would protrude more than one metre above the highest part of the roof (excluding any chimney) on which the flue is fixed;
(b)
in the case of land within a conservation area or a World Heritage Site, the flue would be installed on the principal elevation of the dwellinghouse or building containing a flat; or
(c)
the flue would be within an Air Quality Management Area.