Wessex - if your argument is right (am not saying it isn't!) it rather begs the question of why there is a 6m allowance in the NCS in the first place. If it was deemed so contentious you would think they would want all 6m extensions to go to planning so that they could keep control of them.
If that bay is a kitchen then amenity won't come into it so much. Also, if it is an extension then the amenity rights are reduced I believe, is there a 20 year rule about this?
It seems to me a bit odd they have that side window there looking right into your private patio space. This would not be allowed if say it wasn't there and they were applying to do it, they would have to go for obscure glazing.
I am not sure if the neighbours objection over amenity would hold up but I am no expert!
I think North is one of the worst for loss of light to the neighbour though. I would double check on that best practice pdf the councils have before submitting, it has various diagrams about good practice and bad as regards the orientation.
Having said all that, my neighbours were 100% north so maybe your son is right!
By chance my neighbours behind are doing a north facing one, they have used an architect who has gone for a pent roof that is 3.x m high at the side edge but much lower at the party wall side. I think it is for those reasons.
If that bay is a kitchen then amenity won't come into it so much. Also, if it is an extension then the amenity rights are reduced I believe, is there a 20 year rule about this?
It seems to me a bit odd they have that side window there looking right into your private patio space. This would not be allowed if say it wasn't there and they were applying to do it, they would have to go for obscure glazing.
I am not sure if the neighbours objection over amenity would hold up but I am no expert!
I think North is one of the worst for loss of light to the neighbour though. I would double check on that best practice pdf the councils have before submitting, it has various diagrams about good practice and bad as regards the orientation.
Having said all that, my neighbours were 100% north so maybe your son is right!
By chance my neighbours behind are doing a north facing one, they have used an architect who has gone for a pent roof that is 3.x m high at the side edge but much lower at the party wall side. I think it is for those reasons.