Maximum extension under PD for this plan

[LazyDozer]

Dear All,
I was thinking of extending this rear wards 2 storey or single storey but don't think it's straight forwards. Boundary to the right is on the line and the left is 1m, detached property.
Garden is over 100ft. Would appreciate your thoughts and any sketches on the attached.
Many Thanks!

 

[JimExtension]

I think for a single story rear permitted development extension on a detached house you are limited to 4m (unless you apply for prior approval).
If you go to two stories I believe the limit is 3m for the whole extension.

I'm pretty sure you can extend behind the kitchen, but I'm unsure if you can make full use of the space behind the sitting room. It may depend on whether the sitting room wall is classified as a rear elevation, or whether that area is a side elevation.
The technical guidance on this is a bit confusing - https://www.gov.uk/government/publi...class-a-enlargement-improvement-or-alteration

 

[LazyDozer]

thank you! I sort of feared exactly what you mentioned. Currently the house is rather tight and difficult to extend.
Can that L bit infill be a side extension or is that not permitted?

 

[Murdochcat]

Are you aware of the restrictions about Right to light and your neighbours?

 

[JimExtension]

For the permitted development option you can submit an application for a lawful development certificate. This will at least get you (or not) the paperwork that will allow you to build without fear of breaking the rules.

Or you could try applying for full planning permission. Is there a reason for wanting to do this under PD rather than full planning permission?

 

[LazyDozer]

Are you aware of the restrictions about Right to light and your neighbours?

Yes, the neighbours on one side is their garages and the other is their side wall with no windows so not sure how that applies here

For the permitted development option you can submit an application for a lawful development certificate. This will at least get you (or not) the paperwork that will allow you to build without fear of breaking the rules.

Or you could try applying for full planning permission. Is there a reason for wanting to do this under PD rather than full planning permission?

I am thinking of putting an offer on it and property is in an area where you cannot change the brick work. So trying to figure the worst case scenario

 

[Notch7]

for PD thats a side extension so you can only extend back one storey 2.74m

 

[Murdochcat]

for PD thats a side extension so you can only extend back one storey 2.74m

Assuming PD is allowed in the area

 

[LazyDozer]

for PD thats a side extension so you can only extend back one storey 2.74m

Does this mean I can go back off the kitchen width at 4m depth and off the side of the kitchen behind the lounge till it meets the main side wall ( all single story?)

 

[LazyDozer]

Assuming PD is allowed in the area

Good point will check the neighbours

 

[cdbe]

There's a consultation on extending PD size allowances, and possibly including "wrap-arounds". Maybe worth investigating although obviously nothing concrete at the moment.