If neighbours dispute is build still allows within regulations?

[Mallowmarshmallow]

Hi all,

I've just heard that a house on our street has had permission to build in a manner we didn't think we would be allowed (we are both semi detached with downstairs extensions and they have had permission to build out 1.5 metres on their attached side on the first floor and full length on the non attached side), whereas we had been led to believe that we wouldn't be able to build on the attached side in order to maintain our neighbour's right to light.

Does this mean we should also have the same permission granted? The difference being that their neighbours did not raise a dispute but we suspect ours will.....

• allowed.... apologies for mistake in title

If someone else has been granted planning permission then you would have good grounds to expect yours to be approved too. Right to light has always seemed a tricky one to me as it means different things to different people and from what I can work out the law isn't really clear either, subject to interpretation.