45 degrees light test - is it ground floor or first floor

[platforminc]

Hi All.

When considering a 45 degrees light test to see the impact of an extension on an adjoining property, is this usually the ground floor or the first floor. In this case we have been asked to provide one but unsure if its from ground floor or first floor.

The house in question is a semi with a double storey extension.

Thanks in advance.

 

[freddiemercurystwin]

Christ On A Bike are you the one building Frankenstein's Lair or do you live in the nice little semi?

 

[platforminc]

Does it matter -)
Just asking a question here.

 

[^woody^]

Check your councils policy on how they apply the rule.

Some may apply 45° at ground level and 60° at first floor. Others may ally it from the centre or third point of a window. Some may include all windows, some just habitable rooms.