Code violations in bathroom venting

[Igor Messano]

I am in the process of purchasing a property that has no window or ceiling vent in the bathroom. Does anyone have any experience in having a vent installed? The bathroom has an external wall that is brick with siding over it which I am guessing would have to be drilled to place the vent out. This is on the first floor of a 3 story building so no access to do this through the attic.

Good news is this bathroom will be going through a full remodel so not worried about cutting dry wall but would like to keep the moisture away going forward.