Permitted development question

[LazyDozer]

Is adding an extra storey or two to a residential detached house permitted development?
If so why aren’t people going about doing so.
Can I add 2 floors of 3.5m each to the first floor of my detached house without any planning permission. Keeping roof the same.
Thank you

 

[big-all]

could be wrong
if you are talking a house permitted development is always single story backward or within loft so same profile at roof [with backwards facing dormer windows with flat roof detail nothing on top off whats there
town house or flats seems to be a different concept with storeys added if strong enough but not exactly sure

 

[robinbanks]

Is adding an extra storey or two to a residential detached house permitted development?

Maybe

If so why aren’t people going about doing so.

They are, just not with volumes of success because the councils still have a veto that is exercised often

Can I add 2 floors of 3.5m each to the first floor of my detached house without any planning permission.

Depends what you mean by "first floor". If you mean the sole floor of your detached bungalow then the answer is "not without a planning application". If you mean the upper storey of your two storey house then the answer is "maybe under, if you can convince the council it's a good idea and no other disqualifying criteria applies, otherwise it's a full planning application"

See also

Adding storeys under PD

I was quite surprised to read recently that adding storeys to a house can be done under permitted development. The list of things one must adhere to also seems fairly lax, perhaps the most difficult one being "must make a successful prior approval application". It seems like a fairly simple...

www.diynot.com

And a good, in-depth article:

Upward Extensions: Adding 2 Storeys to Your House Without Planning Permission [2024 Edition]

Extending your house upwards? Learn how homeowners are taking advantage of the new permitted development rights to build 2 storeys to their houses.

urbanistarchitecture.co.uk

 

[^woody^]

Yes you can add two storeys under PD if you meet the criteria.

Why isn't everyone doing it? Why isn't everyone shopping at Aldi and driving Kia"s?