Someone converts a single family home to a duplex by dividing the house on one end to a one bedroom apartment. Along with all the separation rated walls and such which are taken care of they pose another question. They add a small kitchen and make this a one bedroom apartment. It already has a bathroom off the bedroom. This they say was an existing bedroom. the window is almost big enough for egress requirements but not quite. The clear opening is 48 inches from floor. Do you make them change the window or is it existing bedroom window and you can't force them to change it