Repiping
When leaks keep showing up in different spots or water pressure has dropped throughout the whole house, the pipes themselves are usually the problem, not any one fixture.
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How Do You Know You Need Repiping Instead of a Repair?
Repiping means replacing a significant portion, or all, of a home’s water supply lines, typically with copper or PEX, rather than continuing to patch individual leaks as they appear. It becomes the right call when the pipe material itself is failing systemically: galvanized steel pipes corroding from the inside, polybutylene pipe from the 1980s and 90s known for brittle failure, or copper that’s simply reached the end of its expected lifespan. The tell is usually pattern, not severity, one leak is a repair, but leaks appearing in new locations every few months, water pressure that’s dropped house-wide rather than at one fixture, or water that’s consistently discolored, all point to a system-wide problem that repiping fixes at the source. It’s a bigger job than a typical repair, but it also means no more repeat service calls for the same underlying issue.
You can only patch aging pipe so many times before patching becomes the expensive option.
Signs You Need Repiping
These signs point to the plumbing system itself, not just one bad fitting.
- Leaks appearing in different locations every few months
- Water pressure that’s dropped throughout the entire house, not just one fixture
- Consistently discolored or rust-tinted water from multiple taps
- Visible corrosion on exposed pipes in the garage, crawlspace, or basement
- A home over 40 to 50 years old that’s never had the supply lines replaced
What You Can Check Before Requesting Quotes
Repiping itself is licensed plumbing work from start to finish, but a little information upfront helps plumbers scope the job accurately.
- Check the approximate age of your home and whether the original pipes have ever been replaced
- Look at any exposed pipe in the garage, attic, or under sinks and note the material if you can identify it
- Track how many separate leaks you’ve had repaired over the past year or two
- Note whether low pressure affects the whole house or just specific fixtures
- Don’t attempt to replace supply lines yourself, this involves cutting into walls and requires licensed, code-compliant work
Why Compare Quotes Instead of Calling Just One Plumber
Here’s what actually matters for a job this size:
- Matched with up to three licensed, insured plumbers experienced in whole-home and partial repiping
- Compare pricing on materials and labor before committing to a contractor
- Free to use, with zero obligation to hire anyone you're matched with
Repiping is one of the larger plumbing investments a homeowner makes, which is exactly why getting more than one opinion matters, both on the scope of work needed and on the price. Comparing quotes upfront protects you from paying for more, or less, than your home actually needs.
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Everything You Need to Know About Repiping Your Home.
What does repiping actually involve?
Repiping means removing most or all of the aging water supply lines in a home and replacing them with new pipe, typically copper or PEX. It’s different from a one-off pipe repair, which only fixes a single damaged section rather than replacing the whole system. Most repiping jobs also include new shutoff valves and fixture connections so the entire supply system is brought up to current standards at once.
How do I know it's time to repipe instead of keep repairing?
If you’ve called a plumber for the third or fourth leak in the same house within a couple of years, or your home still has original galvanized steel pipe, repiping is usually more economical than continuing to chase individual failures. Rusty or discolored water, chronically low pressure throughout the house, and visible corrosion at exposed fittings are also strong signals. A licensed plumber can do a whole-house assessment and compare the long-term cost of repeated pipe repairs against one whole-home repiping project.
How much does repiping a house cost?
Repiping cost depends heavily on the size of the home, the number of bathrooms and fixtures, the chosen pipe material, and how accessible the walls and slab are. PEX repiping is generally less expensive to install than copper because of lower material and labor costs, though copper has its own long-term advantages. Because the price range is wide, get quotes from a few licensed plumbers who have actually walked your property rather than relying on a generic estimate. For a broader look, check our a smaller pipe repair page, or browse the plumbing inspection for other related work.
How long does a whole-house repipe take?
Most whole-home repiping projects take two to five days depending on the home’s size, number of stories, and whether walls need to be opened and patched. Homes on a slab foundation may take longer if the crew is rerouting lines through attics or walls to avoid cutting concrete, a technique also used for pipe rerouting. Water is usually shut off only during active work hours, with service restored at the end of each day. If you’d like more background, our full services list page covers related options in more detail.
Will I be able to stay in my home during repiping?
Most homeowners do stay in the house during a repipe, though you’ll have limited or no running water for portions of each day while lines are cut and reconnected. Plumbers typically try to restore water by evening and coordinate with you around bathrooms and kitchen use. If your home requires extensive drywall work, ask your plumber ahead of time how they’ll manage dust and daily water access. See shutoff valve replacement for a closer look at that option, and our a smaller pipe repair for everything else we cover.
Copper, PEX, or something else — what should I choose for repiping?
Copper is durable, resists bacteria, and has a long track record, but it costs more and can develop pinhole leaks in acidic water over time; see our copper repiping page for details. PEX is flexible, faster to install, resists freeze-related bursts better, and generally costs less, though some homeowners prefer copper’s resale reputation. There’s no universal right answer, so ask a licensed plumber how your local water chemistry and budget point you toward one material over the other.
What happens to my walls and floors during repiping?
Depending on your home’s layout, plumbers may need to cut small access holes in drywall to reach old pipe runs, especially where lines are routed through interior walls. Many crews minimize this by running new pipe through attics, crawlspaces, or exterior chases whenever possible, similar to the approach used in pipe rerouting projects. Ask upfront whether your quote includes drywall patching and paint-matching, since that’s sometimes billed separately. If you’d like more background, our plumbing inspection page covers related options in more detail.
Does repiping include the drain lines too?
Not usually. Repiping generally refers to the water supply lines, while drain, waste, and vent piping is a separate system that’s addressed through services like cast iron pipe repair or sewer repair if it’s failing. If you have old cast iron drain lines in addition to old supply pipes, it’s worth asking your plumber for a combined quote so you’re not paying for two separate mobilizations.
Do I need a permit for repiping?
Yes, in most cities and counties, a whole-home repipe requires a permit and a final inspection since it affects the potable water system for the entire property. A licensed local plumber will typically handle the permitting process as part of the job, which is one reason unlicensed handyman work on repiping is risky. If you’re in areas like Riverside County or Los Angeles County, permit requirements and inspection timelines can vary by city, so confirm with your contractor.
Is repiping worth it for an older home I'm planning to sell?
Repiping can be a strong selling point, since buyers and inspectors are often wary of homes with original galvanized or aging copper plumbing. It removes a common negotiation point during the sale and can prevent a deal from falling through after a poor inspection report. That said, if you’re only a year or two from selling and haven’t had leak problems, some homeowners choose to disclose the pipe age and let the buyer factor it into their offer instead. See full services list for a closer look at that option, and our shutoff valve replacement for everything else we cover.
What's the process for getting a repiping quote?
A plumber will typically walk the property, note the number of fixtures and stories, check attic and crawlspace access, and identify the existing pipe material before quoting. You can request quotes from multiple licensed plumbers at once through 3PlumbingQuotes to compare pricing, timeline, and proposed materials side by side. Check our full services list if you also need related work like a plumbing inspection done first.