Permitted Development vs Planning permission

nigel4321

Hello,

We are looking at options for extending out mid-terraced house.
Ideally we would like to extend going back on the ground and first floor.

One builder has suggested that we should do the ground floor first and then ask for permission for the 1st floor. As that would be easier to get through.
Does that seem reasonable?

Also they suggested that we may be able to do the ground floor under permitted development. Though it would mean a flat roof and slightly lower ceiling. To change that we would have to apply for planning permission.

Does it seem reasonable to take the approach they are suggesting?

ic

All depends on what you're after: https://www.planningportal.co.uk/info/200130/common_projects/17/extensions

An extension or addition to your house is considered to be permitted development, not requiring an application for planning permission, subject to the following limits and conditions:

No more than half the area of land around the "original house"* would be covered by additions or other buildings.
No extension forward of the principal elevation or side elevation fronting a highway.
No extension to be higher than the highest part of the roof.
Single-storey rear extension must not extend beyond the rear wall of the original house* by more than three metres if an attached house or by four metres if a detached house.
In addition, outside Article 2(3) designated land* and Sites of Special Scientific Interest the limit is increased to 6m if an attached house and 8m if a detached house until 30 May 2019.
These increased limits (between 3m and 6m and between 4m and 8m respectively) are subject to the prior notification of the proposal to the Local Planning Authority and the implementation of a neighbour consultation scheme. If objections are received, the proposal might not be allowed.
Maximum height of a single-storey rear extension of four metres.
Extensions of more than one storey must not extend beyond the rear wall of the original house* by more than three metres.
Maximum eaves height of an extension within two metres of the boundary of three metres.
Maximum eaves and ridge height of extension no higher than existing house.
Side extensions to be single storey with maximum height of four metres and width no more than half that of the original house.
Two-storey extensions no closer than seven metres to rear boundary.
Roof pitch of extensions higher than one storey to match existing house.
Materials to be similar in appearance to the existing house.
No verandas, balconies or raised platforms.
Upper-floor, side-facing windows to be obscure-glazed; any opening to be 1.7m above the floor.
On designated land* no permitted development for rear extensions of more than one storey.
On designated land no cladding of the exterior.
On designated land no side extensions.

Doozergirl

Your builder is talking rubbish.

Building the ground floor first would make no difference to the result of a planning application for a second storey, other than to cost a huge amount more in time, money and disruption.

It is absolutely possible to have a pitched roof on a single storey under permitted development, provided it falls within the guidelines provided above.

Just to clarify, a second storey under PD is not usually possible on a terraced house.

shaun_from_Africa

My opinion

nigel4321 wrote: »

One builder has suggested that we should do the ground floor first and then ask for permission for the 1st floor. [STRIKE]As that would[/STRIKE] [STRIKE] be easier to get through[/STRIKE] As that would mean far more work for him, resulting in a higher profit.

Doozergirl

shaun_from_Africa wrote: »

My opinion

I don't believe that either. I think the guy is just ignorant if he also thinks you can only have a flat roof under PD. Alarm bells for me on the flat roof - it's planning (and building) basics.

No builder seriously wants to build the same thing twice.

If you said he only wants to build a single storey extension as he wants work now and doesn't want to wait for people to wait for planning, I could bring myself to believe that.