Plumbing a whole house can be a daunting task for homeowners, however the actual process involved is relatively simple. The job can take anywhere from a few days to several weeks depending on the plumbing system that is being installed and the existing plumbing infrastructure. If the plumbing system has to undergo major repairs or an extensive replacement, the job could take much longer, up to several months. Homeowners looking to plumbing their home should always consult with an experienced professional who can accurately assess the situation and provide an estimate of what it will cost to properly complete the plumbing job.