How long do plumbing rough ins take? Plumbing rough ins duration depends on scope of project, size of house, and whether new construction or remodel. For single bathroom rough in, such as rough in for toilet, sink, and shower in remodel, it typically takes 1 to 2 days for plumber to run drain lines, water supply lines, and vent lines and set valve bodies. For whole house rough in in new construction, such as 2,000 square foot house with 2 bathrooms, kitchen, laundry, it typically takes 3 to 7 days for crew to install all drain, water, and vent piping through framing. Larger custom homes can take 1 to 2 weeks. Factors affecting time include complexity, number of fixtures, access, inspections required, and whether rerouting existing plumbing in remodel. After rough in, inspection needed before drywall. So for single bathroom, rough in takes 1 to 2 days, for whole house new construction 3 to 7 days, for large house up to 2 weeks, not including finish installation later after drywall.
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