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Licensed under-slab leak detection and repair across Orange County
Slab Leak Repair in Laguna Niguel that stops the water for good
Slab Leak Repair in Laguna Niguel is what we do every day: we find the hidden pipe leak under your floor, fix it, and confirm the line holds before we pack up. If your water bill jumped, a warm spot appeared on the tile, or the meter keeps spinning with everything off, call us. We run electronic detection first so we cut concrete once, not twice.
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What is included
What our slab leak repair service includes
Every job starts with detection and ends with a pressure test and a patched slab. Here is what is covered in a standard repair, and where the scope can grow depending on what we find once the concrete is open.
Full leak detection sweep
Pressure test, acoustic listening, and thermal scan across the affected area. We mark the leak point on the floor before any cutting starts, and we show you the readings so you know it is a real loss and not a fixture.
Controlled slab access
We cut a tight access opening at the marked point using a concrete saw with dust control. Post-tension slabs get scanned for cable first. You get one clean opening instead of exploratory cuts across the room.
Pipe repair or reroute
Damaged section cut out and replaced with new copper or PEX tubing, or the run rerouted overhead through the attic or walls. Fittings, solder, and pipe sealant are included. We build it to IAPMO Uniform Plumbing Code (UPC) standards.
Pressure test and verification
The repaired line gets re-pressurized and held before anything is closed up. You see the gauge hold. If it drops, we keep working. This is the step that proves the repair, and it is not optional on our jobs.
Slab patching and cleanup
Backfill, concrete patching compound, and a level finish so flooring lays flat again. We broom-clean the work area and haul off debris. Concrete patching is included in the price, not billed as a separate trade.
Permit and inspection handling
We pull the plumbing permit through the city and coordinate the inspection. You get the signed-off paperwork for your records, which matters when you sell the house and a buyer's inspector asks about under-slab plumbing.
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Service overview
What Slab Leak Repair in Laguna Niguel actually involves
Slab Leak Repair in Laguna Niguel is the process of locating a failed pipe beneath your concrete foundation, opening the slab at the exact leak point, repairing or rerouting the line, and restoring the floor. Most homes here sit on post-tension or conventional slabs with copper or PEX supply lines poured underneath. When one of those lines corrodes, cracks at a joint, or gets abraded by shifting soil, water escapes into the soil under your house instead of reaching the fixture. We confirm the leak with a pressure gauge and a moisture meter, map the pipe with a video pipe inspection camera, then repair it.
Laguna Niguel homes built from the 1970s through the 1990s are the ones we see most, and copper pipe under slab is the usual suspect. Hard mineral content in local water eats at the pipe wall from the inside, and a hot water line leak under slab shows up as a warm spot on the floor long before it shows up as a puddle. If you have been searching for a slab leak fix Laguna Niguel CA homeowners can actually reach on a Sunday, that is us. We answer, we come out, and we tell you what is happening.
- Stop the water bill bleed — A pencil-thin under-slab leak can push a Laguna Niguel water bill up $80 to $300 a month before you notice anything wet. We stop the loss at the source, then re-read the meter with you standing there so you can see it holding steady. Most customers see the bill normalize on the very next cycle.
- Protect the foundation — Water under a slab softens soil, and softened soil lets a foundation move. Left alone for a season, a small under-slab pipe corrosion problem turns into a foundation crack from leak damage that costs far more than the pipe repair. Fixing the line early is the cheap version of this story.
- Keep your flooring — We do not demo a whole room to reach a leak. With acoustic leak detection microphone work and thermal imaging camera scans, we mark the leak within inches and cut a tight access point. Tile, laminate, and engineered wood usually go back down over the same footprint once the concrete patching compound cures.
- One visit, one answer — You get detection, repair, and a pressure test in the same appointment whenever the access allows. No waiting a week for a second crew to show up. If you need an affordable slab leak repair in Laguna Niguel CA without three separate call-out fees, this is how we keep it to one.
- Detection before demolition — We never open a slab on a guess. Acoustic and thermal detection narrows the leak to a few inches before the saw comes out. That means one access point instead of exploratory cuts across your kitchen, and it means your flooring has a real chance of going back down.
- Upfront pricing, no surprises — You get the number before we start, and it covers detection, access, repair, pressure test, and patching. If we open the slab and find something different than the scan suggested, we stop and talk to you before the price changes. No mystery line items at the end.
- Repair, reroute, or replace — Sometimes a spot repair is right. Sometimes the pipe is failing in three places and a slab leak fix in Laguna Niguel should mean rerouting the whole run overhead. We show you the camera footage and let you decide, because the honest answer depends on the pipe, not on our schedule.
- Warrantied work, clean job site — Our repairs carry a workmanship warranty, and we leave the area broom-clean with the concrete patched level. We also handle the concrete patching compound and finish so you are not hunting for a separate concrete guy after the plumber leaves. One crew, one finished floor.
The service timeline
How our slab leak repair process runs
Phone triage
You call (949) 593-2386 and describe what you are seeing: warm floor, spinning meter, damp carpet, high bill. We ask three or four questions that usually narrow it to a hot or cold line before we ever roll a truck. If it is an emergency slab leak repair Laguna Niguel CA open now situation, we move you to the front of the board.
On-site detection
We shut the fixtures down, isolate the system, and pressurize it with a gauge to confirm there is a real loss. Then we sweep the slab with a listening disc and an acoustic leak detection microphone, cross-check with a thermal imaging camera, and mark the spot. Detection usually takes 45 to 90 minutes in a typical Laguna Niguel home.
Access and repair
We cut a controlled access opening in the slab at the marked point, expose the pipe, and confirm the failure with the video pipe inspection camera. Depending on what we find, we either cut out the damaged section and replace it with copper or PEX tubing, or reroute the line overhead through the attic or walls to get it out of the slab entirely.
Pressure test
Before anything gets closed up, we re-pressurize the repaired line and hold it. If it does not hold, we do not pour. This is the step that separates a real repair from a patch job, and it is why we rarely get called back to the same address for the same leak.
Restore and walk through
We backfill, apply concrete patching compound, and leave the area clean. Then we walk the job with you, show you the test results, and explain what to watch over the next 30 days. Most single-point repairs are done in one day; reroutes can run into a second day.
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Tools and methods we use on every job
Acoustic leak detection microphone
Picks up the sound of pressurized water escaping a pipe under concrete. We sweep the slab in a grid and mark where the signal peaks, which narrows the leak to a few inches before we cut.
Thermal imaging camera
Reads temperature differences on the floor surface. A hot water line leak under slab shows as a warm plume, and the camera lets us see it without pulling up flooring.
RIDGID SeeSnake video pipe inspection camera
Goes inside the pipe to show us the actual failure: corrosion, joint separation, or a crack. We show you the footage so you can see what we are repairing and why.
Fluke pressure gauge and moisture meter
Confirms there is a real loss and measures how fast it drops. The same gauge is used after the repair to prove the line holds before we close the slab.
LeakTronics listening disc
A ground-contact microphone that isolates leak sound from ambient noise. It is how we work in occupied homes without tearing up the whole room to find the source.
Pipe locator and infrared thermometer
Maps the under-slab pipe route and confirms hot versus cold line before we cut. Knowing the pipe path keeps our access opening small and protects post-tension cable.
Trenchless pipe repair equipment
For reroutes and service line work where we can avoid digging. It reduces concrete removal and gets the new line in with less disruption to landscaping and hardscape.
IAPMO Uniform Plumbing Code (UPC) compliance
Every repair and reroute is built to UPC standards, which is what the city inspector checks. It covers pipe material, support spacing, and pressure testing requirements. Building to code is not a selling point, it is the baseline for work that passes inspection.
Isolation and pressure testing
We isolate the hot and cold sides separately and pressurize each one. That tells us which line failed before we open anything, and it gives us a clean before-and-after number to show you at the end of the job.
Spot repair versus full reroute
A spot repair makes sense when the pipe is sound everywhere except one section. A reroute makes sense when corrosion is spread across the run. We show you the camera footage and let the pipe condition decide, not the schedule.
Post-tension slab protocol
Post-tension slabs have tensioned cable running through them, and cutting one is dangerous. We scan and mark cable locations before any concrete saw touches the slab, then cut only in verified safe zones.
Where this service helps
When Laguna Niguel homeowners call us
A 1985 tract home near Crown Valley with original copper under slab and a water bill that doubled in one cycle.
We pressure-tested the supply lines, isolated the hot side, and located a joint failure under the kitchen slab with acoustic detection. Cut one 18-inch access point, replaced the failed section with new copper, pressure tested, and patched the slab the same day. Water bill returned to normal on the next cycle, and the kitchen tile went back down over the same footprint with no layout changes.
A Marina Hills homeowner noticed a warm spot on the hallway floor and a faint hiss at night with all fixtures off.
Thermal imaging confirmed a hot water line leak under slab. Because the copper showed corrosion in two separate sections, we recommended a reroute through the attic instead of two spot repairs. The new line went in over two days with a permit pulled through the city. The warm spot disappeared, the hiss stopped, and the under-slab pipe was abandoned in place so no future leak can start there.
A property manager in Laguna Hills had water seeping through the slab in a tenant space and needed the business open the next morning.
We isolated the affected zone, worked after hours, and used electronic leak detection equipment to pinpoint the break without disturbing the rest of the building. The line was repaired and pressure tested before the tenant opened. No lost business day, no unpermitted work, and a documented pressure test on file for the property owner.
A buyer's inspector flagged a possible slab leak in a 1978 Laguna Niguel home two days before closing.
We ran a slab leak inspection with pressure testing and a video pipe inspection camera, and gave the buyer a written read on the pipe condition. The report showed one active leak and a second section near failure. The buyer negotiated the repair into the sale, and we completed the fix and reroute after closing with the permit handled.
Local execution
How slab leak repair runs in Laguna Niguel
Laguna Niguel sits on clay-heavy soil that expands when it gets wet and shrinks when it dries, and that movement is hard on under-slab pipe. Most of the housing stock went up between the 1970s and 1990s, which means a lot of original copper pipe is now 30 to 50 years old and past its expected service life. Add mineral content in the local water supply and you get the two failure modes we see constantly: corrosion from the inside and abrasion at the joints from soil movement outside. Winter is our busiest stretch. After the first heavy rain, saturated soil shifts, and we get a run of calls for water seeping through concrete slab in homes from Laguna Hills to San Juan Capistrano. Summer brings the opposite problem: dry soil shrinks, pipe settles, and joints that were already weak let go. If you are looking for a professional slab leak repair Laguna Niguel crew that knows which tracts have post-tension slabs and which streets see the most movement, that local pattern recognition is worth as much as the detection gear.
Marina Hills
Mostly 1980s and 1990s construction with copper supply lines under slab. We see a lot of hot water line failures here because the original pipe is at the end of its service life.
Kite Hill
Elevated lots with soil that drains fast but moves after heavy rain. Joint failures at the slab edge are common, and detection usually points to the perimeter rather than the center of the home.
Niguel West
Older tract homes with original copper and some post-tension slabs. We scan for tension cable before every cut here, and reroutes through the attic are a frequent recommendation.
Crown Valley corridor
Mix of residential and commercial slabs along the parkway. Commercial calls here usually need after-hours work so the business does not lose a day.
Clay-heavy soil that expands and contracts
Seasonal soil movement stresses under-slab pipe at the joints. It is the leading cause of pipe joint failure under slab in this area, and it is why we see clusters of leaks after a wet winter or a dry summer.
Hard, mineral-heavy local water
Minerals eat at the pipe wall from the inside, thinning copper over decades. This is the main driver behind under-slab pipe corrosion and the reason hot lines fail before cold lines.
1970s through 1990s housing stock
Original copper under slab in these homes is now past its expected life. When we find one leak in a 1985 slab, we assess the whole run, because a second failure is often not far behind.
Post-tension slabs in newer tracts
Cutting a tension cable is dangerous and expensive. We scan and mark cable routes before any concrete cutting, which adds a step but keeps the job safe and the slab structurally sound.
Before and after
What a successful service visit changes.
Hidden hot line leak, doubled water bill
Before
A Laguna Niguel homeowner's water bill jumped from about $95 to $240 in one cycle with no visible leak inside the house. The meter kept spinning with every fixture off, and a faint warm patch had started forming near the kitchen.
After
We located a hot water line leak under the kitchen slab, cut one 18-inch access point, replaced the failed copper section, and pressure tested the line. The slab was patched level the same day and the bill returned to normal on the next cycle.
Maintenance: Watch the meter once a month with all fixtures off. If it moves, call us before the next cycle. Keeping the water softener maintained also slows mineral corrosion inside the pipe.
Two-point corrosion, reroute instead of repeat repairs
Before
A Marina Hills home had a warm spot in the hallway and a hiss at night. Camera footage showed corrosion at two separate points on the same hot water run, roughly 14 feet apart. A single spot repair would have left the second failure waiting.
After
We rerouted the hot water line overhead through the attic, abandoned the under-slab pipe in place, and pulled the permit through the city. The warm spot and the hiss were gone, and the pressure test held at full line pressure.
Maintenance: No under-slab pipe means no future slab leak on that run. Keep an eye on attic line insulation and have the run re-checked if you ever hear water running with fixtures off.
Commercial slab seepage, no lost business day
Before
A tenant space in Laguna Hills had water seeping through the concrete slab near a restroom wall. The property manager needed the space open the next morning and could not afford a full-day shutdown for exploratory cutting.
After
We isolated the zone, used electronic leak detection equipment to pinpoint the break, and worked after hours. The pipe was repaired and pressure tested before the tenant opened, with the permit and inspection documented for the owner.
Maintenance: Have the supply lines pressure tested annually as part of your building maintenance schedule. Early detection on a commercial slab saves a tenant disruption and a much larger repair bill.
Problems we solve
Problems our slab leak fix near me service solves
These are the four calls we get most often from Laguna Niguel homeowners. Each one has a different symptom and the same root cause: a pipe under the slab that has failed and is dumping water into the soil under your house.
Water bill jumped with no visible leak
A hidden under-slab leak can waste thousands of gallons a month and push your bill up hundreds of dollars before you see a single wet spot. The longer it runs, the more soil it moves under your foundation. We shut the fixtures, watch the water meter spinning, and pressure-test the supply lines to confirm the loss. Then we sweep the slab with acoustic and thermal gear to find the exact point. Most hidden leaks are located and marked within 90 minutes of arrival.
Warm spot on the floor that will not cool
A warm patch on tile or carpet almost always means a hot water line leak under slab. Heat accelerates pipe corrosion, so these leaks tend to grow faster than cold line leaks and can warp flooring within weeks. We confirm the hot line with an infrared thermometer and a thermal imaging camera, then isolate the hot side and pinpoint the failure. Repair or reroute follows the same day in most cases, and we pressure test before closing the slab.
Water seeping through the concrete slab
Visible moisture at the slab edge or through a crack means the soil under your foundation is saturated. Left alone, that saturation leads to a foundation crack from leak damage and a repair bill several times the cost of the pipe fix. We locate the source, repair the failed pipe, and dry the area before patching. If we see signs of foundation movement, we tell you straight and recommend a structural review after the water is stopped. Fixing the water always comes first.
Sound of running water when everything is off
That hiss under the floor is water escaping a pressurized line. It will not stop on its own, and every day it runs adds to the water bill and the damage under the slab. We use an acoustic leak detection microphone and a listening disc to trace the sound to its source, then verify with a pressure gauge. Once located, we cut a tight access point and repair the line. Same-day service is common for this call.
Proof behind the promise
Licensed, insured, and accountable
Technical expertise
Local experience you can put to work
Our technicians work under a California Contractor License (C-36 Plumbing) and build every repair to IAPMO Uniform Plumbing Code (UPC) standards. We have run detection and repair on Laguna Niguel slabs long enough to know which tracts were built with copper, which ones have post-tension cable you must not cut, and which streets see more soil movement after a wet winter. We carry RIDGID SeeSnake cameras, Fluke meters, and LeakTronics listening gear on every truck, and we keep OSHA safety certification current because slab work means confined access and concrete cutting. You get a crew that has done this hundreds of times, not a general handyman guessing at where to cut.
- State-licensed plumbing contractor operating under California Contractor License (C-36 Plumbing) requirements
- Every repair built to IAPMO Uniform Plumbing Code (UPC) standards and inspected before we close the slab
- RIDGID SeeSnake and LeakTronics detection gear on every truck, not shared between crews
- Post-tension slab experience: we locate and avoid tension cables before any concrete cutting begins
- Backflow prevention certification on staff for water service line and main line work
How much does slab leak repair cost in Laguna Niguel?
Most single-point repairs in Laguna Niguel run $1,200 to $4,500 in 2026, with detection alone at $250 to $600. A full pipe reroute through the attic or walls typically lands between $4,000 and $9,000. The variables are access depth, whether it is a hot or cold line, and whether we cut one spot or reroute the run. We give you the number before we start cutting.
Can I fix a slab leak myself in Laguna Niguel CA?
No, and it is not a close call. You cannot find the leak without a pressure gauge, a listening disc, and a thermal imaging camera, and you cannot cut a post-tension slab without risking a cable that can injure you. Add the permit requirement and the pressure test, and a DIY attempt usually costs more than hiring us once. Call (949) 593-2386 instead.
How long does slab leak repair take in Laguna Niguel?
Detection takes 45 to 90 minutes. A straightforward single-point repair is usually a one-day job, roughly 6 to 9 hours including access, repair, pressure test, and patching. A reroute runs one to two days. If your slab is post-tension or the leak sits under tile you want saved, budget the longer end of that range.
Do I need a permit for slab leak repair in Laguna Niguel CA?
Yes, most slab repairs and reroutes require a plumbing permit through the city, and the work has to meet IAPMO Uniform Plumbing Code (UPC) standards. We pull the permit and handle the inspection as part of the job. Skipping it can bite you at resale, when a buyer's inspector finds unpermitted plumbing under the slab.
Frequently asked questions
Frequently Asked Questions
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Ask the local teamRelated services
Related Services
Slab Leak Detection
Detection comes before any repair. We use acoustic and thermal gear to pinpoint the leak within inches, so the repair crew cuts one small access point instead of a trench across your floor. Most Laguna Niguel detections finish inside 90 minutes.
View serviceEmergency Slab Leak Repair
Water coming up through the floor at 11 p.m. is an emergency, and we treat it like one. We isolate the line, stop the loss, and get a crew out to Laguna Niguel fast. Call (949) 593-2386 and we will tell you what to shut off while we drive.
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Under-Slab Leak Repair
The core of what we do. Under-slab pipe corrosion, joint failure, and abrasion from shifting soil all get handled the same way: expose, repair or reroute, pressure test, patch. We build it to UPC standards so it passes inspection the first time.
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Hot Water Line Slab Leak Repair
A warm spot on the floor is the classic sign of a hot water line leak under slab. Hot lines fail faster than cold ones because heat accelerates corrosion. We confirm it with an infrared thermometer, then repair or reroute the run.
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Contact the local team
Call for Slab Leak Help
Reach us at (949) 593-2386 any time, day or night. We answer live, ask the right questions about your water bill and floor symptoms, and dispatch a technician with detection gear. Most calls in Laguna Niguel and the 92677 area get a tech on site the same day.