Neighbours built a garden office during lockdown. They are leaseholders, council is the freeholder. It's in a conservation area. It does comply with the rules about being less than 2m high and less than 50% of the garden area. However my understanding is that because they have a flat, not the whole house, is that it is not automatically a permitted development.
I'm sure they'll have asked the freeholder for permission. However the freeholder then needed to apply for planning permission. This didn't happen.
I spoke in general terms to someone from the local conservation society, and to the council planning department (though it isn't an actual planning officer you get on the general phone line). Both of them agreed that planning permission should have been sought.
The issues are - firstly I think it deters the council tenant family in the upstairs flat from accessing their section of garden, which is the back half. Because they would have to be walking down the side of it. In fact they never use their garden. The conservation society person said this was exactly why planning would have been required, to prevent such situations as one flat dominating a garden / causing loss of amenity to another flat in the building (is that right?).
I'm the next-door neighbour and I resent having to listen to their business phone calls for 40 hours a week if I'm in my own garden, because the office has glass floor to ceiling windows so no sound insulation, and anyway they often have the door open.
I have now broached the subject with them and they have said they will look into it! What is likely to happen? I guess just that the freeholder will need to make a retrospective application, and probably it will be waved through? I do know that houses around here often have garden offices with no problem, but I don't know the situation with flats. Also, I guess now that they know of the possible planning issue, I think they would need to clarify/resolve it before they would be able to sell? Which they also indicated they would be looking to do at some point as the situation isn't ideal for anyone.
Thanks for any of your thoughts!