Ground floor dwellings
All habitable rooms (not kitchens) which open directly into a hall way which lead to the main entrance door do not require egress windows, however egress windows may be fitted if the client should want them. In this case the window must comply with the egress specification stated in the approved document. Egress windows will be required however for any “inner” rooms where egress is not directly to the main exit door.
As stated in the Building Regulations, any window which is provided for emergency egress should have an unobstructed clear opening area of at least 0.33m2 and must have a MINIMUM dimension of 450mm high and 450mm wide. The bottom edge of the opening window should be no more than 1100mm above the floor level. The window should also be in such a position within the dwelling that the person escaping is able to reach a place free from danger (i.e away from the fire).