I am renovating a few rooms including an existing laundry room. It currently has one exterior window and another openable window onto an existing mudroom (which also has exterior windows).
After the renovation, the laundry will lose the exterior window as an existing bathroom is extended. The interior window into the mudroom will survive.
Does the Uniform Building Code require that a room with no exterior windows have an exhaust vent fan? Does the existence of the interior openable window into a room with exterior windows have a bearing on that? (I do realize that local regulations may vary from the Uniform Code, but my jurisdiction generally follows those regs.)
[I know there is a related question here, but I have no air conditioning and I am wondering about the additional interior window.]