Class G – chimneys, flues etc on a dwellinghouse
What is allowed
The installation, alteration or replacement of a chimney, flue or soil and vent pipe on a dwellinghouse.
Where can I use it
On existing houses in England
What is not allowed
You cannot use it where:
- permission to use the dwellinghouse as a dwellinghouse has been granted only by virtue of Class M, N, P, PA or Q
- the height of the chimney, flue or soil and vent pipe would exceed the highest part of the roof by 1 metre or more; or
- in the case of a dwellinghouse on article 2(3) land, the chimney, flue or soil and vent pipe would be installed on a wall or roof slope which—
- fronts a highway, and
- forms either the principal elevation or a side elevation of the dwellinghouse.; or
- the dwellinghouse is built under Part 20 of this Schedule (construction of new dwellinghouses).
How do I use the allowance
This is a normal allowance – no application is needed but a Certificate of Lawfulness may be sought if you want to use it.
Class G is a very open permitted development allowance that even apply’s to Listed buildings and houses in Conservation Areas. If your dwelling is within a Conservation Area please check with your LPA to see if there is an Article 4 direction.