venting (not me, my house)
I just went into my attic for the first time since setup last year. I found that my bathroom vent fans and one vent stack just ended in the ceiling. My builder says that venting them through the pre-drilled holes in the roof (thankfully covered by shingles) is the plumbers job. The plumber (who has done multiple houses for this and other builders) states that they never do that part of the job and that the set crew usually handles it.
Who did this for you if you have a modular?