A repipe is the right call when the supply lines inside your walls are failing as a group, not one at a time. For a typical Southern California house that means roughly 3 to 4 calendar days from first visit to final inspection, and a final bill that runs anywhere from the low four figures to the high teens in thousands, driven by material and square footage. Everything below sits under our main plumbing page and breaks that picture into pieces.
What actually happens during a whole house repipe?
The plumber shuts the water, cuts into the walls at chosen spots, pulls out the old supply lines and runs new pipe to every fixture, then ties the new lines back into the main and the heater. An inspector reviews the unfinished pipework while walls are still open. Drywall patching is the last step. Drain lines and gas lines are not part of it.
In practice the sequence looks like this:
- A walk-through counts fixtures and finds where the lines enter and where access is easy.
- The permit is filed with the city.
- Holes go in. In a PEX job they tend to be small and strategic, because flexible tubing snakes through framing.
- New lines connect to every sink, toilet, tub, shower, hose bib and appliance.
- Pressure goes on, and the inspector checks it.
- Walls get closed, and patching, texture and paint follow.
Many crews turn the water back on each evening. Make sure the quote says so, because some do not.
Is it possible to avoid tearing out half the walls?
Mostly yes. PEX flexes, so crews fish it through existing wall cavities and attics through a modest number of access holes, which keeps patching limited. Copper is stiffer and tends to need more openings. Homes on a concrete slab can run new lines overhead instead of breaking the floor, and that rerouting is a common choice in post-war tract houses across Buena Park and La Habra.
Do expect some drywall repair; no honest quote makes it vanish. Find out if the wall repair, from patch to paint, is priced in or falls to you. Plumbers often split these off, and the line item can be a real number.
Stucco exteriors, tile surrounds and plaster walls complicate things. Some of the older homes in Old Towne Orange and Fullerton may have plaster walls, where holes cost more to restore than plain drywall, so tell the plumber what the walls are made of before a number is given.
Is a city permit part of the process?
Yes, in practice. New supply piping counts as permitted plumbing work in Southern California cities, with one inspection while framing is exposed and another at the end. Anaheim plumbing permits come from its Building Division, which lets the owner or a contractor file. On hiring: California treats permit-requiring work as contractor-only territory, so check a CSLB license number whatever the price.
Skipping the permit often backfires, because plumbing done without a permit can surface at resale or during an insurance dispute. Favor a bid that names the permit and says who files it. Fees differ by city; guides mention a spread of about $200 up past $1,000, so request the exact figure for your street. To confirm any of this, ring the building office for your own city, whether Anaheim, Fullerton, Orange or elsewhere.
How many days will a repipe take?
Most houses need 1 to 3 days of actual plumbing, and bigger or awkward ones need up to 5. Add one to three days around the inspection, plus a day or more for drywall. Timelines published by repipe contractors cluster near three to four days start to finish on an ordinary house, longer where slab or stucco gets in the way.
Factors that stretch the schedule: a second story, a finished basement or detached unit, an inspector's calendar, and whether the plumber patches or a separate drywall trade turns up days afterward. Plan on tap water being unavailable for chunks of each working day, and have bottled water, a plan for showers, and a place for the dishes.
What should a repipe cost in Orange County?
A guide covering Los Angeles and Orange counties spreads PEX and copper jobs from $4,500 at the bottom to $18,000 on top. Guides place PEX toward the low end and copper toward the high end. Other guides differ, so the written quote sets the price.
| Factor | Pushes the price |
|---|---|
| Material | Copper costs well above PEX |
| House size and bathrooms | More fixtures, more feet of pipe |
| Stories and access | Two stories and slab homes cost more |
| Patching | Plaster, stucco and tile raise restoration |
| Permit and inspection | Set by each city, often a few hundred dollars |
Treat these as a guide gathered from contractors and cost-guide sites. A written quote for your address is the only price that counts. For the longer breakdown, read what repiping costs and the per-material notes on PEX pricing.
The cheapest route is usually PEX, and the least expensive plan within that is one clean job rather than patches. Partial repipes help when only one branch is bad, but you pay mobilization twice if the rest fails soon after.
Is a repipe worth it, or can I wait?
It is worth it when rust shows up in hot water, pressure keeps dropping, pinhole leaks recur, or you have a pipe material with a bad record. Wait if you have a single failure on otherwise healthy copper. A leak or two is normal wear; a pattern is the signal. Hard water in Anaheim, near 16 to 19 grains per gallon on Anaheim's latest water report, adds mineral scale to the picture.
Pipe types worth checking in an older home:
- Galvanized steel. Corrodes inward, narrowing over decades until flow suffers. See galvanized pipe replacement.
- Polybutylene. Gray or blue plastic used about 1978 to 1995. Chlorine in municipal water attacks it, and acetal fittings fail often. See polybutylene pipe replacement.
- Thin copper. Pinholes pile up in some soils and water chemistries.
If you suspect the whole system, why repiping makes sense lists the other warning signs, and slab leak repair versus repiping covers the under-floor case.
PEX or copper for my house?
PEX wins on price, speed and fewer wall holes, and it will not rust the way steel does. Copper has a long record, tolerates heat and sunlight, and some buyers prefer it. In North Orange County, either meets code. Choose on budget, wall conditions and who will own the house. Our PEX versus copper comparison weighs both, and PEX A versus PEX B covers the finer print.
Common questions
Could I repipe my own place?
Anaheim's published permit guidance lets a property owner apply for a plumbing permit, so it is legal on your own home. It is also long, physical work with real stakes: a bad joint floods a wall. The method itself is laid out in our DIY repipe walkthrough. Most people hire it out.
Are repiping companies in other states relevant to me?
Not really. Searches such as whole house repipe in St. Augustine bring up Florida contractors, with different codes and soils. Our service runs in Anaheim, Fullerton, Orange and the cities nearby. Compare quotes from contractors who pull permits in your city and know local water.
Which approach to repiping works best for most houses?
For most homes it is PEX run through existing cavities by a contractor who files the permit, with patching agreed in writing. Copper suits owners who want metal throughout and can budget more. The best choice depends on the walls and the budget, so get two itemized quotes.
Do I have to repipe the whole house at once?
No. A leaking branch can be replaced alone. If the rest is also galvanized, polybutylene or showing pinholes, though, doing it in phases usually costs more overall. Request pricing for both the full house and the partial job, then compare.
More in this guide
- Galvanized pipe replacement
How to tell if your home has galvanized pipe, why it fails, when to replace it, how long a repipe takes, and what permits apply in…
- Repiping
PEX-A and PEX-B both work for a Southern California repipe.
- PEX repipe cost
What a PEX repipe costs for Anaheim and Orange County homes: roughly $4,000 to $10,000 for many houses, copper higher, plus permit and…
- Repiping and pipe replacement
Is polybutylene pipe in your Southern California home worth replacing?
- Repiping and pipe replacement
How a whole house repipe works in Anaheim and North Orange County: PEX or copper, slab or crawlspace, the permit, the days it takes and…
- Repiping and pipe replacement
Weighing PEX against copper for a repipe in Anaheim, Fullerton or Orange?
- Costs
What a whole-house repipe costs near Anaheim, by home size and pipe material, with a quick estimator, permit notes, timelines and ways to…
- Repiping
Why do people repipe a house in Southern California?
Sources
- City of Anaheim Building Division, plumbing permit and water heater information
- California Contractors State License Board, what kind of contractor you need
- Power Pro Plumbing, whole-house repipe cost guide for LA and Orange counties
- City of Anaheim Water Hardness
- Published repipe prices from Southern California plumbing businesses and cost guides, checked November 2026
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