Question on Permitted Development for Side Return Extension

[DevlinT]

Hello all

We are at the beginning of our journey to renovate our Victorian house. We wish to do a side return extension to fill up that space on the side at the back. I have a question regarding permitted development and the 3m rule.

My question is: from where does the 3m rule apply? In the attached photo I have drawn out the proposed extension. Does the 3m rule apply from point A, i.e. it begins from the window of the reception room. Or from point B, from the further point at the back of the house - the kitchen wall?

Thank you.

 

[freddiemercurystwin]

Point A, it also needs to meet all of the criteria for a 'side extension'.

 

[DevlinT]

Great, thanks for the quick response freddiemercurystwin.

 

[garyo]

It could be both a and b if you want two extensions, as long as the resulting two extensions don't touch in any way, as then the combined extension will fail the side extension test.

 

[Nakajo]

.