Does this need planning permission?

[OneTwo]

The initial message was deleted from this topic on 28 February 2017 at 23:32

[OneTwo]

I've had a scan through of the guidance and I think it'll be very very close to the limits but time will tell. Thanks for the link.

Anyone else care to offer any opinion?

[OneTwo]

Thanks for the feedback, seems like the collective opinions are split but its probably 'just' below the thresholds.

[OneTwo]

Apparently it will be rendered. Not sure what kind of roof it's getting though...

I have christened it 'the air raid shelter'.