The Town and Country Planning (General Permitted Development) (England) Order 2015

Permitted development
This section has no associated Explanatory Memorandum

O.  The installation, alteration or replacement of a flue, forming part of a microgeneration combined heat and power system, on a building other than—

(a)a dwellinghouse or a block of flats; or

(b)a building situated within the curtilage of a dwellinghouse or a block of flats.