(408) 978-3093

Whole House Repiping in San Jose, CA

Rusty water, low pressure and one leak after another are signs your pipes are worn out. We replace them with new PEX or copper, usually in a few days, with permits, inspections and drywall patching handled, so you can stop repairing and start over.

  • Google 4.9130+ reviews
  • Licensed C-36 · C-20 · ACSLB License #1101278
  • 1-year labor warranty24/7 service since 1986
Call (408) 978-3093See prices
New copper pipes and a shower valve behind an opened tile wall

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Google 4.9 · 130+ reviews · CSLB #1101278 · BBB A+

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Repiping Services in San Jose

Homes, condos and multi-family buildings, planned so you can keep living in the house.

  • Whole house repiping

    Every hot and cold water line from the main shutoff to the fixtures replaced with PEX or copper, with new shutoff valves.

  • Partial repipes and reroutes

    A bathroom, a kitchen or the lines under a slab replaced or rerouted when the rest of the system is sound.

  • Water lateral replacement

    The service line from the meter to the house replaced, often by boring instead of trenching. See water line replacement.

  • Gas line replacement

    Old black iron or undersized gas piping replaced and pressure-tested. See gas line services.

  • Multi-family and HOA repiping

    Phased repipes for condo complexes and apartment buildings, with a project manager and planned water shutdowns.

  • Drywall patching

    We cut small, neat access holes and patch them so they're ready for paint.

When Should You Repipe?

One leak is a repair. These signs mean the whole system is wearing out.

Get a free estimate
  • Repeated leaks

    Two or more pinhole or joint leaks in a few years usually means more are coming.

  • Rusty or discolored water

    Brown water, especially first thing in the morning, points to corroding galvanized pipe.

  • Low water pressure

    Galvanized pipe narrows inside as it rusts, starving fixtures of pressure.

  • Galvanized or polybutylene pipe

    Galvanized steel from before the 1970s and gray polybutylene from the 1980s and 1990s are both known to fail.

  • Hot water takes forever, or temperatures swing

    Restricted lines make showers swing hot and cold when other fixtures run.

  • Planning a remodel

    Repiping while walls are open costs much less than doing it later.

PEX or Copper?

PEX Copper
Material and labor Lower Higher
Fittings Fewer; flexible runs bend around corners More soldered joints
Freeze and burst resistance Good; expands slightly Can split if frozen
Water chemistry Not affected by corrosion Can develop pinholes over time
Typical life Decades Decades

Most San Jose repipes today use PEX: it’s faster to install through existing walls, needs fewer openings and costs less. Copper remains a good choice where you prefer metal pipe or where it’s exposed. Either way, we install new shutoff valves at every fixture. Learn more about plumbing pipe types and what repiping involves.

What to Expect During a Repipe

We plan routes through the attic, crawlspace and walls to keep openings small, protect floors and furniture, and keep a work area clean. Water is turned off during the day while lines are switched over and restored at the end of most days, so most families stay home throughout. After the new system passes its pressure test and City inspection, we patch the openings, ready for paint.

Repair or Repipe?

A single leak in otherwise healthy copper is a repair. Repiping makes sense when leaks are repeating, the pipe is galvanized or polybutylene, water is rusty or pressure is poor (San Jose Water lists deteriorating galvanized pipe among the causes of slowly falling pressure). Spending on a series of repairs, plus the water damage that comes with them, often costs more than a repipe within a few years. See when and why repiping is necessary.

Sources

Checked October 2026.

How Much Does Repiping Cost in San Jose?

A whole-house repipe with PEX in a typical San Jose home costs $8,000 to $18,000, including permits, inspections and drywall patching. Financing is available.

Typical repiping prices in San Jose, installed, in US dollars. Checked October 2026.
ServiceTypical San Jose price (USD)
Whole-house repipe (PEX, typical home)$8,000–$18,000
Finding a single leak instead$150–$600
Flat-rate pricingTypically based on $150–$250 per hour, plus parts and drive time
Inspection feeWaived for service plan members$59

What affects the price

  • Size of the home. More bathrooms and fixtures mean more pipe and more connections.
  • Pipe material. Copper costs more than PEX in material and labor.
  • Access. Single-story homes with attic access are quicker than two-story homes and slabs.
  • Extras. Water lateral, pressure regulator, recirculation and new fixture valves add cost.
  • Patching and permits. Included in our repipe price.

Most repairs are quoted as a fixed price before we start. Ranges are typical for San Jose and the South Bay and don't include current specials.

Read the repiping cost guide →

How Our Repiping Process Works

  1. Inspection

    We inspect your piping, water pressure and access, and plan the new pipe routes.

  2. Written price and schedule

    You get a written price for PEX and copper, plus a schedule and shutdown plan.

  3. Permit

    We pull the permit before work starts.

  4. Repipe

    Most homes take two to five days. Water is restored at the end of most days.

  5. Test and inspect

    We pressure-test the new system and schedule the City inspection.

  6. Patch and clean up

    We patch access holes, clean up, and walk you through the new shutoffs.

Repiping in San Jose

Why so many South Bay homes need new pipes now.

  • Galvanized pipe in older homes

    Homes built before the 1970s often still have galvanized steel water pipe, now well past its expected life.

  • Polybutylene in later homes

    Some homes from the 1980s and 1990s were plumbed with polybutylene, which fails at fittings.

  • Slab homes and reroutes

    On slab-foundation ranch homes, we run new lines through the attic and walls instead of under the slab.

  • Permits and inspection

    Repiping requires a City permit and inspection; we handle both.

Neighborhoods we serve: Downtown San Jose · Willow Glen · East San Jose · South San Jose · Evergreen · Cambrian Park · West San Jose · Berryessa · North San Jose · Blossom Valley

Current Specials

Save on your visit. Mention the offer when you book.

What Our Customers Say

Google 4.9 from 130+ reviews: read more →See photos of our work →

  • We hired CPI for a complete house repipe and an addition of a water recirculation system. They did an excellent job. The workers were friendly, they cleaned up after themselves, they didn’t hesitate to ask if they had any questions and we were assigned a project manager to ensure that the job went smoothly. They handled permits and inspections very well. Everything went smoothly. They were definitely worth the money. I wish all of our home improvement jobs had gone this well. I definitely recommend them.

    Tanja F.Yelp review

  • I have called on CPI multiple times. The first time was a critical emergency to replace hot & cold lines to an outside building which failed due to age and natural deterioration. The second and third times were minor interior jobs. Today they replaced and upgraded the main line from the street to our home. Next, I plan to have them take care of everything for a new home we’re planning to build. These guys are awesome. They can handle any size job. Prices are fair. I like Matt a lot. Attention to detail and quality is fantastic. Highly recommend.

    T. S.Yelp review

  • Dustin did a great job fixing my main valve pipe in the front of my house…didn’t leave until it was completed (took around 3+hours).

    Saved my life!…Good guy! 🙂

    Sean C.Google review

Repiping FAQs

What does repiping involve?

Replacing a home's old, corroded or leaking water pipes with new piping, usually PEX or copper, from the main shutoff to every fixture, with new shutoff valves.

How does the repiping process work?

We inspect, give you a written price and schedule, pull the permit, run the new lines through small wall openings, pressure-test, pass inspection and patch the openings.

How much does repiping cost in San Jose?

Typically $8,000 to $18,000 for a whole-house PEX repipe in a typical home, including permits and patching. Financing is available.

What pipe materials do you use?

Mostly PEX, which is flexible, freeze-resistant and has fewer fittings, and copper for customers who prefer it. Both meet California plumbing code.

Can I stay in my home during a repipe?

Yes. Water is off during working hours and restored at the end of most days.

Will repiping improve my water pressure?

Usually, if old galvanized pipe was the cause. See how repiping improves water pressure.

Helpful Guides

Serving San Jose and the South Bay

Our shop is at 2880 Aiello Dr in San Jose. We provide repiping across the city and nearby South Bay and Peninsula communities. See our full service area.

Repiping in other cities

Content and prices reviewed October 2026.

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