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Copper pipe and inspection clipboard on a tile slab floor in a San Juan Capistrano home
San Juan Capistrano, CA · Orange County

San Juan Capistrano Slab Leak Detection & Repair

Offer Slab leak detection is free when we do the repair.

Warm tile in one spot. A bill that climbed and stayed there. A meter turning with the whole house shut down. San Juan Capistrano slab leak repair begins with naming the buried line, because nothing sensible can be decided before that. On copper poured into a 1970s floor, new PEX run overhead is almost always a better answer than opening the concrete.

  • 60-min response window
  • Overhead PEX reroute on aged copper
  • Tile & flooring untouched
  • CSLB License #920054

One thing to flag: we are slab and water-line specialists. Pool and spa leaks, irrigation, and natural-gas lines fall outside that. Anything in the slab, beneath the foundation, or in a wall feeding a fixture is squarely ours.

60 min San Juan Capistrano Response Since 2008 Serving Homeowners Licensed & Insured

Slab Leak Repair in San Juan Capistrano, CA

The slabs under this city are older than most of the county's.

This is not a new suburb, and the housing figures show it. Of roughly 13,000 homes, 4,704 went up in the 1970s and 1,559 in the 1960s, which puts a large share of the city’s floors past the half-century mark. All of that copper was laid straight into the concrete, and copper in a slab has no maintenance window and no inspection option. It simply carries water until the day it stops doing so quietly.

Fifty years is also long enough that a single failure tells you something about the rest. A run that has been buried since 1974 has spent that entire time under identical conditions along its full length. When one section gives way, the sections either side of it are the same age, the same alloy and the same wall thickness. That is the fact the whole repair decision turns on, and it is why we talk about the run rather than the hole.

So the recommendation here is usually to stop using the buried line rather than to open the floor and patch it. Cutting concrete leaves every other foot of that copper exactly where it was, and the saw and breaker send vibration through pipe that is already thin. Running new PEX overhead through the attic ends the leak by taking the old line out of service. We have been fixing them that way since 2008.

$0

No Callout Charge

Your service call is free. No trip charges, no surprise add-ons before we've looked at anything.

$0 TRIP FEE
FREE

Written Estimates

Reroute scope, in writing, with the diagnostic behind it. You see the price before any drywall opens.

PRICED BEFORE ANY WORK STARTS
What we do on a San Juan Capistrano slab leak

Where your house lands on this list decides the quote

Nearly every call reduces to one question asked in different circumstances: is the failure reachable, or is it buried? Concrete never enters the answer. What changes is scope, and scope is what you are paying for.

Slab Leak Detection

Listening gear and a pressure gauge, with a thermal camera brought in only where it settles something. All of it aimed at one conclusion: which buried length has gone. The floor is not involved at any stage.

  • Which side of the system, first
  • Confirmed by ear along the pipe
  • Thermal only on hot-side failures
See full detection method

Overhead PEX Reroute

What gets recommended whenever the failure sits below concrete. The dead length is sealed off and abandoned, and a replacement in PEX travels up a wall and across the attic. Flooring is never part of the scope.

  • Two modest openings in drywall
  • PEX-A carried through the attic
  • Tested under pressure, warranted long term
Why we lead with reroute

Accessible Spot Repair

Occasionally the failure was never buried: a valve out in the open, a fitting at the heater, a cavity behind drywall feeding a faucet. Those are ordinary repairs, handled on the visit that found them.

  • The spent length taken out and renewed
  • Copper or PEX, your preference
  • Checked under pressure before closing
When spot repair fits

Hot-Side Slab Diagnosis

Heat wears copper faster, so hot runs generally go first. Working out which side has gone is a few minutes at the heater, and it prevents opening something that was never the problem.

  • Inlet closed at the heater to halve the system
  • Confirmed by ear on the suspect run
  • Thermal only where it corroborates
Active slab flooding? Emergency plumber

Whole-House PEX Repipe

If more than one length is going, or the address has produced this before, putting the whole system in PEX draws a line under it. Carried out overhead, with the concrete untouched.

  • Both sides of the system renewed in PEX-A
  • Usually two to four days, in phases
  • Regulator inspected as part of it
Ask about your build
Our Method

Finding it without touching the concrete.

What people brace for is somebody with a jackhammer and an educated guess. What turns up is a sequence. The same six moves run on every buried failure in this city, opening at the water meter and closing on a definite conclusion: the line, the side, and whether anything needs rerouting.

That conclusion exists before a single thing is cut. It is the entire reason a job ends with one patch of drywall rather than a relaid floor.

01

The meter test

Everything opens at the meter with the house closed down. Motionless is what we want to see. Any drift and water is leaving the system, which is all that needs establishing at this point.

02

Inside or outside the slab?

Shutting the main isolates the building. If the dial settles, the loss is indoors, concrete included. If it keeps drifting, the problem lies out toward the street and is not a slab leak at all.

03

Hot side or cold side?

The heater inlet gets closed to halve the system. A fading signal points at the hot run, a persistent one at the cold. Warmth underfoot is a hint and nothing more, so the listening gear settles it.

04

Acoustic locating through the piping

Listening happens on the metal, at valves, at the heater, anywhere a run is reachable, and never through the slab, which absorbs the noise and moves where it seems to begin. There is no dig site to mark. There is a line to name.

05

Pressure-test confirmation

A gauge goes onto a hose bib, the main is shut, and the reading is watched. A falling needle proves on its own terms that water is going somewhere, and how fast it falls says something about size.

06

Thermal imaging when it helps

A hot failure below a hard floor sometimes shows plainly on thermal. It is used to corroborate what has already been heard. Most jobs conclude without anyone reaching for it.

Our repair principle

Nobody opens your floor to reach one hole.

A buried failure here is bypassed overhead rather than patched through the concrete. Two things drive that, and both get explained before a homeowner agrees to anything.

Start with the vintage. Metal that has sat beneath a 1970s floor for half a century is uniformly spent, so closing the visible hole simply schedules the next one. Then consider the access. Cutting and breaking concrete sends shock through pipe already at the end of its life, which is how the smallest figure on the day becomes the largest figure by winter.

What we do
Cross-section of a slab leak repair: new PEX rerouted overhead through wall framing and ceiling, with the old failed copper line abandoned in place under the concrete
Overhead PEX Reroute

New line, run above the slab

A fresh PEX line climbs a wall, crosses the joists and drops back down to the fixture. The spent copper is sealed and left underground. No concrete disturbed, no shock transmitted, nothing newly exposed.

What we don't do
Cross-section showing a slab cut down to the buried copper line with a spot patch installed mid-run, surrounded by excavated soil
Slab Cut & Spot Patch

Cutting concrete to patch in place

Repairing one length through the floor leaves every other foot of half-century-old copper exactly as it was. The following failure tends to appear on the same line, and getting to the first one can be what brings it on.

What we do on every in-slab leak

Re-route the failing line overhead

For any pipe failure under the concrete, hot or cold

A reroute retires the buried length by carrying a new PEX-A line through walls and attic instead. The leak ends because that pipe stops carrying water. The case is structural rather than cosmetic:

  • What remains of the line stops being a worry Renewing the entire exposed length settles the matter, instead of sealing the one spot that happened to surface.
  • Nothing heavy works alongside spent copper Shock from cutting equipment carries. Patching what is visible can begin what is not, a few feet along. Going overhead removes that completely.
  • The floor is left as found A pair of modest drywall openings, no stone or tile taken up, no concrete to pour back, no finish carpentry to redo afterward.
  • A warranty is possible Fresh PEX carries long-term cover on materials and labor. A repair made to half-century-old copper does not, and anyone offering equivalent cover on one is worth questioning.
  • Post-tension foundations rule it out anyway Those must never be cut. Ordinary slabs get identical treatment here, so what lies underneath never alters the advice.
The one exception

Accessible spot repair

When the leak is NOT in the slab

One set of circumstances puts a straightforward repair back on the table: the failure was never beneath the floor. It sits somewhere reachable with no concrete involved, and the investigation almost always shows that early.

  • Out in the open at a valve Beneath a sink, behind a toilet, at the laundry connection. The spent fitting comes off and a new one goes on.
  • At the heater A flex line, a union, the inlet itself. Visible, and repaired with nothing opened.
  • Inside a reachable cavity A perforation behind drywall on a faucet feed, well clear of the floor. Modest opening, length renewed, patched.
  • Through the concrete, never Where the investigation places the failure underground, the floor stays shut and the line gets bypassed. Price does not move that.

Anyone proposing to open a floor to patch one hole in half-century-old copper is worth a second opinion before you say yes. Neither the sums nor the exposure to what remains tends to sit in your favor.

5% OFF Up to $200 in Savings

Our thanks to the people who keep San Juan Capistrano running.

A 5% discount (up to $200 off) for first responders, military, healthcare, teachers, seniors, and nonprofit staff serving San Juan Capistrano and south Orange County. Mention "Community Heroes" when you call our dispatch; we'll take care of the rest.

  • First Responders
  • Military
  • Healthcare Workers
  • Seniors
  • Teachers
  • Nonprofit Employees
Claim Your Discount

Applies to repairs over $500. Cannot be combined with other promotions. Proof of eligibility may be requested at the time of service.

Service Area

The San Juan Capistrano neighborhoods where we do slab work weekly.

The freeway runs through the center of the city, so most of it is reached quickly. Camino Capistrano and Rancho Viejo Road sit either side of it, Del Obispo Street covers the coastal end, and Ortega Highway with La Novia Avenue takes a truck up into the eastern hills. All of 92675 is inside the response window.

Aliso Viejo Office

Name & Address Cali's Choice Leak Detection & Emergency Plumbing 65 Enterprise, Ste 400C
Aliso Viejo, CA 92656
Phone (949) 785-5225 Same number 24/7, calls route to dispatch
Hours Open 24/7.
View on Google Business Profile

Neighborhoods we service for slab leaks

The parts of the city we are in most weeks. If yours is close by and not listed, we still cover it, just call.

Los Rios Mission Hills Marbella Hunt Club Rancho Madrina Pacifica San Juan Alipaz Mission Springs Peppertree Bend Village San Juan Stoneridge Sun Hollow Las Brisas Mission Village Loma Vista San Juan Hills
ZIPs served: 92675 92693
Why Cali's Choice?

Slab leak specialists serving San Juan Capistrano since 2008.

2008
SINCE

Cali's Choice

Leak detection and slab leak specialists working San Juan Capistrano and south Orange County.

Hundreds

Slab leaks located and repaired

Spot repairs and overhead reroutes across San Juan Capistrano, combined.

#920054
CSLB LICENSE

California License

C-36 Plumbing classification. Bonded & insured statewide.

Free

Leak detection

Free when we do the slab repair.

★★★★★

What homeowners say about our slab work.

Verified Google reviews from slab leak jobs handled by the team that serves San Juan Capistrano.

★★★★★

I could hear water running in my bathroom wall and it turned out that I had a slab leak. I called and talked to Ginny. John B came out to give an estimate and then to do the work. They were both so amazing. Ginny was kind and very helpful. John explained everything throughout the process. He was very knowledgeable and helpful. They made a stressful situation much better and seemed liked they really cared. He even came out on his day off to finish the work. In addition, their price was reasonable. Everything is working great now.

J
J.B.
Google
★★★★★

A water leak under our slab was carefully fixed by Sergio and Levi. They worked for 11 hours straight so that we could have running water that evening .Estimates were reasonable, repairs were explained, areas were cleaned upon job completion…what more can one ask for? A+ all the way!

E
E.N.
Google
★★★★★

Sergio and Levi were the plumbers sent out to my house after I suspected having a slab leak. Sure enough they confirmed it. They did an amazing job re-piping my entire house and finished much faster than expected. Very professional and courteous. I will only use them for my future plumbing needs from now on.

A
A.O.
Google
Slab Leak Insurance Claims

The claim paperwork is ours, not yours.

Of all the losses a household policy deals with, this one gets the closest reading. The insurer wants the event described in particular language, an itemized breakdown, and pictures of the copper that actually gave out. Anything absent and the file simply waits while the damp spreads.

None of that lands on you. Not an invoice handed over with good wishes attached. The whole submission, from filing to settlement.

Cali's Choice technician walking a San Juan Capistrano homeowner through a slab-leak insurance claim at the kitchen table
What we handle on every slab leak claim:
  • A written record of how the loss happened. Which side gave out, the year the house went up, what the pipe was made of, phrased in the language an adjuster is trained to look for.
  • A photographic set. The readings taken, the opening made, the spent copper itself, and everything the water reached. Dated, sequenced and labeled.
  • An itemized breakdown. Reroute or straightforward repair, split into elements, with the technical reasoning that led there.
  • We deal with the adjuster ourselves. Queries come to us rather than to you. If further proof is wanted, further proof goes over.
  • A written case for going overhead, where that is the method. Insurers wave a floor repair through and interrogate a reroute, so the investigation goes in beside the argument.
State Farm
USAA
Farmers
Allstate
Liberty Mutual
Mercury
Travelers
AAA
+ more, ask
Slab Leak Pricing

What San Juan Capistrano slab leak repair actually costs.

Any figure offered before a technician has walked the house is invention. Two neighboring addresses can differ threefold, depending on how many lengths are going, how many floors sit above, and what the attic is like to move around in. Everything that shifts the total is below, so the written quote reads as a calculation.

What moves a slab job up or down

How much of the system is being bypassed

One length taken from the heater to a single part of the house is the ordinary job. Several lengths, or the entire system, climb from there.

Vintage and material

Copper fitted beneath a 1970s floor that has gone once is usually spent along its whole length, which can move the answer toward renewing everything.

Distance and what sits above you

How far the new line travels and how easy the attic is to move in both land in the hours. Single-story tracts are quick. Two floors on a slope are not.

How many openings are needed

Two covers the ordinary case. An awkward route wants a third. Patching and matching the texture is inside the figure rather than billed afterward.

Damage that already happened

Anything already saturated is a separate trade and a separate scope. It is written up for the claim and stays off the plumbing bill.

Am I even on a slab? My house is one of the older ones in town.

Worth settling before anything else, because this city has genuinely old housing. Several hundred addresses predate 1950, and a share of those sit over a crawl space instead of concrete. Where there is a crawl space the pipe can be reached directly, which makes it a different and generally cheaper afternoon. We confirm which you have before quoting.

My house is from 1976. Does that make a slab leak likely?

It puts you in the biggest single group in town. Around 4,700 addresses here went up during the 1970s, all of them with copper set into the concrete, and that pipe is now approaching fifty years in service. Nothing about that predicts your house. It does explain why this work exists locally in the volume it does.

What would I have noticed before calling?

Commonly one of four things. Heat under one part of the floor and nowhere else. A bill that jumped and never came back down. Water audible with the place shut up. A meter that carries on turning when everything is closed. Any single one of those justifies the call.

What is the response time out here?

An hour or better. The freeway splits the city and both Camino Capistrano and Rancho Viejo Road parallel it, while Ortega Highway and La Novia Avenue take a truck up into the hillside neighborhoods on the east side.

Is my tile coming up for this?

No part of the floor is touched. Whatever is leaking underground stays underground, sealed and retired, while its replacement travels overhead in PEX. Two openings in drywall is the extent of the disruption, and no equipment is vibrating near half-century-old pipe.

It has happened before in this house. What does that tell you?

That the run is tired along its length rather than damaged at one point. A repeat failure on the same line is normally where retiring the whole line becomes the cheaper decision, because a third tends to follow the second. At fifty years old the case is straightforward.

When would you repair rather than bypass?

Only where the water is escaping somewhere reachable without disturbing concrete: a valve in the open, a connection at the heater, a cavity behind drywall feeding a faucet. Anything genuinely underground gets bypassed. Patching a worn line tends to book the next visit, and the excavation itself can be the cause of it.

I'm in one of the newer gated communities. Is my slab different?

It may well be, and it makes no difference to the recommendation. The gated hillside developments here mostly date from the 1990s and 2000s, and foundations of that era are more often post-tension. Those must never be cut. Since ordinary slabs are treated the same way, both answers come out as an overhead bypass. We verify the foundation type rather than guessing at it.

Does a homeowner policy pay for this?

Usually for what the water ruined, not for the plumbing that let it out. Wet drywall, flooring and the drying process generally fall inside cover. The pipe work generally falls outside. Everything is documented both ways so nothing is left to the adjuster’s imagination.

If the floor stays shut, how is it found?

The meter shows loss. The heater splits hot from cold. From there it is sound, taken along the pipe itself at valves and reachable runs, because concrete muffles and displaces it. A gauge settles whether it is live. Thermal comes out for hot failures under hard flooring. Nothing is disturbed before the line has a name.

Permits. Are they part of this?

For larger work, sometimes. Extensive bypass work and whole-house replacements frequently go through the City of San Juan Capistrano; renewing one section like for like generally does not. The job gets assessed and you are told which applies, and at what cost, before anyone starts.

Who owns the pipe, me or the water district?

You do, from the meter inward, and that takes in everything cast into the concrete. Santa Margarita Water District assumed the city’s water and sewer system in 2021 and looks after the main and the meter itself. Should the meter test place the loss on their side, you will hear that from us and the call goes to them.

Ready when you are

Slab leak in San Juan Capistrano? We're 60 minutes away.

A real technician in a stocked truck, and a written quote setting out spot repair against reroute before anything is opened. If the job is not ours, we will tell you whose it is.

5% OFF Community Heroes Discount First responders · military · healthcare · teachers · seniors · 5% up to $200 on repairs over $500
Call San Juan Capistrano · 24/7 (949) 785-5225

65 Enterprise, Ste 400C · Aliso Viejo, CA 92656 · CSLB #920054

Or have us call you.

A slab specialist from our dispatch will call back.

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