two/three storey extension and 45 degree rule

A neighbour has proposed building a full width extension two/three storey's high with a room in the extended roof.

My local planners say we can object through design consideration and how the sheer mass overshadows us.

In their guidelines an example is quoted whereby if a line is drawn from the centre of your nearest window to the uppermost part of their extension and if that line cuts through their building the extension should be refused.

In our case this is marginal.

The example assumed that your windows are in line with the main wall, whereas in our case and another affected resident our nearest windows are bay windows. Can we count our side windows as a separate window as these account for over 20% of our overall glazed area. Also the top panes that are frosted glass are under the lip of the bay above that is nearly 300mm deep.

Many thanks

Is there a question following.......?

Since placing the original post, I have seen the other recent posts on the 45 degree rule and now realise that we may have a case for "Right for Light".

The question in my original post is as previously noted:

The example assumed that your windows are in line with the main wall, whereas in our case and another affected resident our nearest windows are bay windows.

Can we count our side windows as a separate window as these account for over 20% of our overall glazed area?

Many thanks

You will find that the Right to Light guidlines vary considerably from LA to LA so ideally you need to find out what guidlines your LA use in their decision process.

wxy234 said:

Can we count our side windows as a separate window as these account for over 20% of our overall glazed area?

Click to expand...

Would you get any less daylight if you did not have a bay and instead the plane of the glazing was in line with the main wall?