It impacts it positively. The average floor space of a living room in Scotland, for example, is around 15 to 25 square feet. But not only do Bay Windows not infringe on this space, it also increases the feeling of spaciousness in the room despite only giving a small amount of additional floor space, as it transcends beyond the normal borders of the room.  On top of this, the additional windows that bay windows give will allow in more light, highlighting just how much room your living room has. The darker a room is, typically, the smaller it feels.