is it still allowed 6 metres deep extension without BC?

[pasok1000]

Hi
I remember a couple of years ago it was allowed 6 metres, is it still the case?
thank you

Have a look on the planning portal and you will find your answer.

Permitted development rights were extended but councils may still require prior approval and buildings regs.

Very unlikely but it depends on the size of your property and the proportion between the extension and the garden.
It will need full planning permission for 6m.
Check the Planning Portal and the Planning info of your local authority or call them and ask.

Doesn’t it also depend on whether your house is detached, semi detached or terrace?

And whether single/double storey and how close to neighbour boundaries.

Do you mean planning permission or building control - they are two different things with their own rules?

It's possible to need planning permission without building control, and possible to need building control without planning permission.

Do you mean planning permission or building regs? They are very different.

Assuming planning permission you can extend 4m to the rear on a detached house without permission, 3m for semi or terraced. You can go up to 8m if you go down the prior approval route.

Check the planning portal as there are lots of other rules that you also have to abide by.

You will always need building control and regs. But check about planning.

Some developments in the last 20 years ago had permitted development rights taken away as part of the original planning permission so you should ALWAYS check with the council

Look here - www.homebuilding.co.uk/permitted-development-rights-guide/

Key part is
"Class A – Extensions (enlargement, improvement or alteration)
This allows a householder to build a single-storey side extension up to half the width of the existing dwelling; a single-storey rear extension up to 4m in length for a detached dwelling and 3m long for a semi or a terrace house; and, in certain circumstances, 3m two-storey rear extensions.

The changes that took effect on 30 May 2019 now make permanent the decision that larger single-storey rear extensions of up to 8m (6m for semi or terrace) are permissible under Class A — but do require prior notification (see ‘Lawful Development Certificates are key’)."

That's for building it but as mentioned, building regs is different and you need then regardless of planning permission status. Your builder will sort it out but it costs for every visit.

Some new developments have had the PD rights removed so if it's a new build you might not be able to add anything.

You always need to comply with building regs. That is the law. Its not an option. The function of building control in the council is to ensure the building regs are being complied with. If you are doing structure works, which you will be doing (foundation, frame etc) you will need a building control certificate.
Planning is different, you will to apply for A planning permission. Separate process but that is the first step.
Btw, you can go about building control hiring a private approved inspector so does not have to be the council people. Usealy they have a more relaxed approach to the building regs.
Good luck

Loofah01, thank you, we can go for 6 m, according to your link. how tall can it be please?

I think 6m falls under the neighbourhood consultation scheme so you need prior notification to council and they have to check if your neighbours object

And you need to check deeds in case pd rights were removed - applies to many houses built since 1990s. The limit also includes any previous extensions or increase in habitable space.

@pasok1000 You have a choice of single storey or two storey. They're set standard heights that will match up to your current house

Have a look on your Council website. We did a 6m extension last year and we did it under permitted development. Was a really quick and straight forward process. Still needed building control though but our builder sorted that and it was all signed off thankfully.

Is your house in a conservation area? Or a world heritage site, aonb?

The rules are different for these areas, I would strongly recommend you speak to your local council and check the planning portal before you do any work.

Don’t rely on advice from a public forum, the rules are quite complicated and to be fair, keep changing too.