Conservatories fall under the same planning rules
as any other extension to your home.
'Permitted development' allows for certain
developments to be undertaken without planning
permission. These developments must fall within
certain requirements. If you wish to go beyond the
requirements, you will require planning permission.
(The rules are different for properties on designated
land)
​
-
To be covered by
permitted development
any conservatory within
two metres of a
boundary must not be
higher than 3 metres.
​
-
Maximum eaves height
should be no higher than
the eaves of the existing
house. The highest part
of the conservatory
should be no higher than
the roof ridge line of the
existing house.
​
-
For a detached house
any rear conservatories
must not exceed more
than four metres of the
original property, for any
other residential property
it is 3 metres
​
-
The Conservatory must
not exceed 50% of the
land around the original
house (or how it stood
on the 1st July 1948)
this calculation must
include any sheds or
outbuildings.
​
-
The Conservatory can not be forward of the
original principle or side
elevation of the house or
highway fronting to fall
under permitted
development.
​
-
Side conservatories must
not exceed 50% of the
original house and be no
higher than four metres.
​
​
​
​
Where the property is not in designated land (Article
2(3)) * or a Site of Special Scientific Interest, this limit is
increased to eight metres if a detached house; or six
metres for any other house.
These increased limits are subject to the neighbour
consultation scheme. This requires that the relevant
Local Planning Authority is informed of the proposed
work via a prior approval application.
Permitted developments only apply to houses
(bungalows) not flats, maisonettes or other buildings
If unsure always check with the local council before undertaking any alternation/building work.
