Does the 50% rule for extensions under PD include the original house?

[JamesHopeful]

My question is per the title.

I always thought that the rule was you could (subject to complying with other requirements and maximums) build on up to 50% of the land surrounding your house. However, someone told me today that the rule is that you can only build on up to 50% of the total plot (i.e. the original house would count towards the 50%, which'd potentially make the size of extension permitted considerably smaller).

[JamesHopeful]

I've just managed to answer my own question by referring to the excellent Planning Geek website: https://www.planninggeek.co.uk/gpdo/...se/extensions/

I was right!

[Neelix]

Have you checked that you can use PD?

it’s been removed in many places

[1600e]

It's been 5 yrs or more since I properly looked a pd but it's NOT as simple as 50%.
there are restrictions on height, distance from boundaries, whether is rear, side or front elevation or detached etc etc. Certain previous building works are also counted after a certain year but not before that year for example. I followed the government advice and guidance, planning portal maybe? Can't remember.

[pilman]

One can always look at the actual Town and Country Planning (General Permitted Development) (England) Order 2015 where Schedule 2, Part 1, Class E refers to out-buildings.

The definition in Section E1, sub-section (b) leaves no doubt about what is to be taken into account when calculating the area of land that can be used to erect out-buildings.

Class E – buildings etc incidental to the enjoyment of a dwellinghouse

Permitted development

E. The provision within the curtilage of the dwellinghouse of—

(a)any building or enclosure, swimming or other pool required for a purpose incidental to the enjoyment of the dwellinghouse as such, or the maintenance, improvement or other alteration of such a building or enclosure; or

(b)a container used for domestic heating purposes for the storage of oil or liquid petroleum gas.

Development not permitted

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


(b)the total area of ground covered by buildings, enclosures and containers within the curtilage (other than the original dwellinghouse) would exceed 50% of the total area of the curtilage (excluding the ground area of the original dwellinghouse);

[SouthernDave]

Ask an architect… you’ll need one anyway…