Rough-in plumbing is the hidden work done before walls are closed — running drain lines, supply pipes, and vent stacks through framing and slabs to the correct location for each fixture. The rough-in must pass a city inspection (including a supply pressure test) before the walls are closed. Finish plumbing (trim-out) is done after surfaces are complete — connecting supply stops, setting toilets, installing faucets, mounting showerheads, and connecting appliances. RainFire Builders performs both phases with licensed plumbers and coordinates city inspections for every project.