01
Leaks turning up in more than one place
Whole-house repipes
Copper or PEX, when the original supply has had enough. We sequence it so your water is off for hours rather than days and you can stay in the house while it happens.
Thousand Oaks · Slab leaks
Slab leak repair
in Thousand Oaks
Slab leak repair in Thousand Oaks, ten minutes from the shop in Westlake Village. Most houses built in the Conejo Valley between 1965 and 1990 sit on a concrete slab with the copper water lines run through it. That copper is now fifty years old, and slab leaks are what happens next.
Call (805) 330-3111
Request a visit
Danny picks up when he can, and calls back the same day. You get the price before we start, and nobody here is on commission. Monday to Friday, 9am – 5pm.
Licensed
CSLB #339618
Insured
Bonded and insured
Since 1977
49 years, two generations
On Google
5.0 stars
In Thousand Oaks
What this job looks like
in Thousand Oaks
Slab leaks in Thousand Oaks come from the older tracts on the east side, off Erbes Road and along Westlake Boulevard, built in the sixties and seventies on slab with the copper in the concrete. The Lang Ranch houses are thirty years younger and rarely have one. A warm patch on the floor, or a bill that jumped, is how it starts. We isolate the line at the meter, then bring in the leak-locating specialist we work with to listen through the slab and mark the spot. Then it is a spot repair through one opening or a reroute overhead, and we say which we would do in your house.
Streets and pockets we work in: Lang Ranch, Sunset Hills, North Ranch, the Westlake side of the boulevard, the older tracts off Erbes Road.
02
A water bill that has jumped
Slab leaks
We find it first. Sometimes it is one bad spot and sometimes it is the start of a pattern, and those are very different jobs.
If that is what yours is doing (805) 330-3111 Mon–Fri 9–5 Request a visit →
The job
How it goes
A slab leak is a water line leaking under or inside the foundation. Copper under concrete fails from the outside, where the pipe touches soil or the slab itself, and from the inside, where high water pressure and hard water wear it thin. Hot lines go first, because hot water is harder on copper. The tells are a warm patch on the floor, a meter that keeps turning, a bill that has jumped, or a sound of running water with nothing on.
Finding it is the first job, and it is done from above. We isolate the line with the meter and gauges, then bring in the leak-locating specialist we have used for years to listen for it through the slab and mark the spot to within a foot or so, along with any post-tensioned cables in the concrete. Then there are two ways to fix it. A spot repair opens the floor at the mark, cuts out the failed section and puts in new pipe. A reroute abandons the line under the slab and runs a new one overhead, through the attic and down the wall, so nothing is left in the concrete to fail again.
Which one is right comes down to the condition of the rest of the line. One leak on a line that is otherwise sound is a spot repair. A second leak on the same line within a year or two means the pipe itself is done, and rerouting it is cheaper than opening the floor a third time. We tell you which situation you are in, and why, before you decide.
Call if
What you notice,
and what it usually is
01
A warm patch on the floor
A hot line leaking under the slab. The most common slab leak there is.
02
The meter turns with everything off
A pressurized leak somewhere. If nothing is visible, the slab is the usual place.
03
Damp carpet or lifting flooring, no fixture near it
Water coming up through the slab.
04
The water heater runs all the time
Hot water leaving through a leak, so the tank never catches up.
05
A second leak a few months after the first
The line is failing. Time to talk about a reroute.
How it goes
Four steps, and you have the price at step three
-
01
You call
Danny picks up when he can, and calls back the same day. Tell him what it is doing and where.
-
02
We look
We come out, find the cause and show you. In plain words, with the part in our hand where there is one.
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03
You get a price
Before anything starts. Repairs are our time plus parts, and the bigger jobs get a written bid. Nobody here is on commission.
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04
We do the work
Small repairs are usually done the same visit. Bigger jobs get a start date and a number of days, and we hold to it. Done to code, permitted where it needs it, the house left the way we found it.
Common questions
Slab leaks in Thousand Oaks: things people ask
- How fast can you get to the east side of Thousand Oaks?
- Often the same day. It is a ten minute drive. Say what it is doing when you call and Danny will give you a time straight away.
- Does the oak tree ordinance affect a sewer repair?
- It can. The city protects oaks and the root zone around them, so a trench cannot always take the shortest route. We locate the line from the surface first and plan the dig around the trees before anything is priced.
- Do you have to break up the floor?
- For a spot repair, one opening about the size of a coffee table, at the mark. For a reroute, no floor is opened at all: the new line runs overhead and comes down the wall.
- How long is the water off?
- A spot repair is usually one day. A reroute of one line is one to two days, and the water is only off while the new line is connected at each end.
- Will my insurance cover a slab leak?
- Many policies cover the damage and the access work, and not the pipe. Check yours. We document the leak with photographs and give you a written scope, which is what the adjuster asks for.
A question that is not here (805) 330-3111 Mon–Fri 9–5 Request a visit →
Google reviews
What people say
5.0 ★★★★★ 5 reviews on Google
★★★★★
“Dan is consistent. Professional, on time, only does what is needed, experienced, easy to work with, clean, and smart.”
★★★★★
“Dan's Plumbing did excellent job for us replacing our broken water pressure regulator. Quick response, good price, great quality of work. Will hire them again.”
2 of the 5, word for word. Read the rest on Google → Had us out? Leave a review →
Nearby, and related
More in Thousand Oaks,
and this job elsewhere
- Plumber in Thousand Oaks The whole town: what the houses are plumbed with, what people call about, the neighborhoods.
- Leak detection in Thousand Oaks On the east side of Thousand Oaks the leaks split by neighborhood.
- Water heaters in Thousand Oaks Water heaters on the east side of Thousand Oaks tend to fail in batches: the Lang Ranch houses from the late nineties are all reaching their second replacement at once. We replace tanks with the strapping, the expansion tank and the City of Thousand Oaks permit, and we do tankless conversions where the gas line can be sized for it. In October 2025 we took a tank out of a Thousand Oaks garage and put a condensing tankless unit in its place.
- Drain cleaning in Thousand Oaks Thousand Oaks protects its oaks by ordinance, and that matters the moment a drain problem turns out to be a sewer problem: the shortest trench often runs through a root zone you cannot dig in. So we clear the line first, and if it has backed up before we put the camera down and locate the trouble from the surface before anyone prices a repair. In November 2025 one main here was blocked with flushable wipes and another with roots.
- Sewer camera & repair in Thousand Oaks A camera inspection in Thousand Oaks answers a question the oak ordinance makes expensive to guess at: where exactly the line has failed, and whether a repair can stay out of a protected root zone. We run the camera from the cleanout to the street, you watch it with us, and the transmitter on the camera head lets us mark the fault and its depth on the surface so the hole goes in the right place the first time.
- Repiping in Thousand Oaks Repipes on the east side of Thousand Oaks are the older tracts, sixties and seventies copper that has pinholed more than once.
- Gas lines in Thousand Oaks Gas work on the east side of Thousand Oaks lately has been outdoor kitchens, fire pits and upsizing for tankless heaters.
- Repairs in Thousand Oaks On the east side of Thousand Oaks most of what we do is small.
- Tankless in Thousand Oaks Thousand Oaks tankless work is mostly conversions, and the unit is the easy part.
- Pressure regulators in Thousand Oaks Thousand Oaks sits high enough on its east side that street pressure arrives above the 80 psi the code allows in a house, and it is worse on the hillside streets above Lang Ranch. A regulator that failed years ago shows up as a run of small failures: fill valves, angle stops, faucet cartridges, a dripping relief valve. A gauge on the hose bib settles it in a minute. In December 2025 a shower valve here needed a new cartridge and the regulator at the front of the house had failed as well, so both were replaced. An expansion tank goes on at the heater with it.
Slab leaks nearby: Westlake Village · Agoura Hills · Oak Park · Lake Sherwood
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Slab leaks · Thousand Oaks
Tell Danny what
it’s doing
Describe the symptom and you will usually have an answer in two minutes. You get the price before any work starts. Ten minutes from the shop. Monday to Friday, 9am – 5pm.