Whole-House Repiping
Repiping is what you do when leaks stop being incidents and start being a pattern. Galvanized steel, polybutylene, and failing copper systems all reach a point where spot repairs cost more over time than replacement. Whole-house repiping runs $4,000 to $15,000 depending on size, material, and access.
How urgent is this? Planned work, not an emergency. The reason it appears on an emergency plumbing site is that most people first hear the word after their third leak, and it is worth knowing the option exists before the fourth.
Typical cost: $4,000 to $15,000 nationally. A small single-story home with accessible crawlspace or attic sits at the low end. Multi-story homes, slab foundations, finished basements, and copper instead of PEX all push toward the high end. Confirm whether drywall restoration is included.
Warning signs
- Repeated pinhole leaks in different parts of the same system
- Persistently low water pressure from internally corroded galvanized pipe
- Rusty or discolored water at multiple fixtures
- Known polybutylene supply piping anywhere in the house
- Visible corrosion, green staining, or weeping at multiple joints
What causes it
- Galvanized steel corroding internally and reaching end of life at 40 to 60 years
- Polybutylene degrading from within, with failure that gives no warning
- Copper thinning from aggressive water chemistry or high velocity
- Chronically high water pressure accelerating wear across the whole system
- Original construction using materials no longer considered acceptable
What to do before the plumber arrives
- Document your leak history with dates, which is what determines whether repiping is justified
- Identify your existing pipe material if you can; it is usually visible at the water heater
- Test your water pressure, since chronically high pressure needs a regulator regardless
- Get more than one quote and compare scope carefully, especially drywall restoration
- Ask specifically whether the quote includes permits and inspection
What the plumber will actually do
Assess the existing system
Material, age, pressure, and leak history are documented to confirm repiping is genuinely warranted rather than a large sale.
Plan the routing
New runs are planned to minimize wall opening, often using attic or crawlspace paths, and to keep pipe out of the spaces that freeze.
Install the new system
New PEX or copper is run to every fixture, with manifolds or home-run configurations where they make sense, and the old system is abandoned in place.
Pressure test and inspect
The system is pressure tested and, in nearly every jurisdiction, inspected under permit before walls are closed.
Patch and restore
Access holes are patched. Confirm before signing whether drywall repair, texture, and paint are included, because this is the most common scope dispute in repiping work.
Repiping FAQ
How do I know if I need a repipe rather than another repair?
The honest test is pattern rather than severity. Two or more leaks in different parts of the same system within a couple of years means the system is failing rather than unlucky, because the pipe everywhere else is the same age and condition. Known polybutylene is a repipe regardless of leak history.
PEX or copper?
PEX costs less, installs faster with fewer joints, tolerates freezing considerably better, and resists the water chemistry that pits copper. Copper lasts longer where conditions suit it, handles high temperatures, and some buyers still prefer it. For most repipes today PEX is the pragmatic choice, and it is what most plumbers will recommend unless something specific argues otherwise.
How long does repiping take and can I stay in the house?
Typically two to five days for a average home, and most households stay through it. Water is off during working hours and restored at the end of each day. The disruption is mostly dust and access holes rather than displacement.
Will repiping increase my home's value?
It does not add value the way a kitchen does, but it removes a deduction. Galvanized or polybutylene supply piping is something buyers and inspectors flag, and it becomes a negotiating point at sale. A documented, permitted repipe closes that issue.
Related services
- Emergency Leak DetectionNon-invasive location of hidden water leaks behind walls, under floors, and beneath slabs using acoustic, thermal, and pressure testing equipment.
- Emergency Burst Pipe RepairA burst pipe releases water continuously until the supply is shut off. Emergency repair covers isolation, pipe section replacement, and pressure testing.
- Main Water Line RepairRepair and replacement of the buried water service line between the meter and the house, including trenchless replacement options.
- Slab Leak Detection and RepairLocation and repair of water lines leaking beneath a concrete foundation, using acoustic and thermal detection to minimize concrete work.
Emergency guides
- Why Your Water Bill Suddenly Went UpA jump in water usage with no change in habits almost always means a leak. How to find it yourself, in order of likelihood.
- When to Call an Emergency Plumber (and When to Wait)After-hours plumbing costs 1.5 to 2 times standard rates. Here is which problems justify it and which are cheaper to schedule.
Cost guides
- Whole-House Repiping CostWhat it costs to replace a home's supply piping, how PEX and copper compare, and the scope question that causes most disputes.
- Burst Pipe Repair CostWhat burst pipe repair costs by location and pipe type, plus the water damage costs that usually exceed the plumbing.
- Water Heater Replacement CostWhat tank and tankless water heater replacement costs, including the code upgrades that appear on the invoice unexpectedly.
Common questions
- Costs and Billing QuestionsHow emergency plumbing is priced, what the premiums are, and which questions to ask before dispatch.
- Water Heater QuestionsLeaks, no hot water, strange noises, safety valves, and the repair-or-replace decision.
- Drain and Sewer QuestionsBlocked drains, main line backups, recurring clogs, and what not to put down them.
Related articles
- Why Pipes Burst in Cold States and Catastrophically in Warm OnesMinnesota freezes harder than Texas every year and loses fewer pipes. The reason is preparation, not temperature.
- The Leaks You Never See Until the Bill ArrivesHidden leaks waste thousands of gallons without a single visible drop. How to find them in half an hour, for free.
- What Emergency Plumbing Actually Costs, and WhyA plain breakdown of after-hours rates, call-out fees, and the four questions that change your invoice.