01
A warm patch on the floor
Slab leaks
We find the leak before anything gets opened up. After that it is a question of repairing the one spot or rerouting the line, and that comes down to the condition of the rest of it.
Westlake Village · Slab leaks
Slab leak repair
in Westlake Village
Slab leak repair in Westlake Village, from the shop on Hillsbury Road. 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 Westlake Village
What this job looks like
in Westlake Village
Slab leaks are the most common serious leak we see in Westlake Village, for a plain reason: 1967-era copper under a slab, hard water, and street pressure that runs high on many streets. Once the locator has marked it, the choice is a spot repair through one opening or a reroute overhead, and the condition of the rest of the line decides which. We say which we would do in your house before you decide.
Streets and pockets we work in: First Neighborhood, Westlake Island, North Ranch, Three Springs, Southshore, the streets off Lindero Canyon.
02
Another leak a few months after the last
Copper pinholes
One leak on its own is a repair. Three in a year usually means the pipe itself is going, and we will tell you which situation you are in.
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
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01
You call
Danny picks up when he can, and calls back the same day. Tell him what it is doing and where.
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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 Westlake Village: things people ask
- How fast can you get here?
- Often the same day. Westlake Village is a five minute drive from the shop, so a small job can sometimes fit between two others. Say what it is doing when you call and Danny will tell you straight away when he can be there.
- Who pulls the permit?
- We do, through the City of Westlake Village, for water heaters, gas lines, repipes and remodel plumbing. The inspection is part of the job and the paperwork stays with the house.
- 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'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.”
★★★★★
“Dan is consistent. Professional, on time, only does what is needed, experienced, easy to work with, clean, and smart.”
2 of the 5, word for word. Read the rest on Google → Had us out? Leave a review →
Nearby, and related
More in Westlake Village,
and this job elsewhere
- Plumber in Westlake Village The whole town: what the houses are plumbed with, what people call about, the neighborhoods.
- Leak detection in Westlake Village Westlake Village houses were built from 1967 on with the water lines in the slab, so a leak here usually shows up on the bill or as a warm patch on the floor before anyone sees water. We start at the meter, isolate hot from cold and the house from the irrigation, and narrow it to a line. Under a slab we bring in the locator we work with to mark the spot before anything is cut. Five minutes from the shop.
- Water heaters in Westlake Village Most Westlake Village heaters live in a garage closet sized for a 40-gallon tank in 1970, which limits what fits and how it vents.
- Drain cleaning in Westlake Village The original drain lines in Westlake Village are cast iron or early ABS, and the sewer laterals out to the street are fifty years old.
- Repiping in Westlake Village A Westlake Village repipe is nearly always a house with its original copper in the slab that has started to pinhole.
- Pressure regulators in Westlake Village The water reaches Westlake Village from tanks on the hills, so on a lot of streets it arrives well above the 80 psi the code allows in a house.
- Repairs in Westlake Village Westlake Village is where the shop is, on Hillsbury Road, so the small jobs here are the ones we do most.
- Tankless in Westlake Village Most Westlake Village houses keep the water heater in a garage closet sized for a 40-gallon tank in 1970, and a tankless hangs on that wall.
- Sewer camera & repair in Westlake Village Westlake Village went up from 1967 on, so the sewer laterals out to the street are around fifty years old, cast iron or early ABS depending on the year. The camera goes in at the cleanout and runs to the street, you watch it with us, and the transmitter on the head marks the fault and its depth on the surface. Plenty of houses here were built without a cleanout at all. In August 2026 we put one in on a line that had none, trenching about ten feet down with shoring and cutting in a combination fitting. The next clearing on that line takes an hour.
- Gas lines in Westlake Village Gas work in Westlake Village comes in a few kinds. New lines out to a BBQ, a fire pit, a range or a pool heater, sized for the appliance and the length of the run. Upsizing from the meter when a tankless goes in, which is most of the conversions here. Repairs and leak tests. In April 2026 we fitted a seismic gas shutoff valve on a meter here with a stabilizer bracket, and a smart water shutoff with a pressure relief valve on the main. Every line is tested under pressure and inspected, permit through the City of Westlake Village. If you smell gas, leave and call SoCalGas first.
Slab leaks nearby: Thousand Oaks · Agoura Hills · Oak Park · Lake Sherwood
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Your name, your number and a line about what it is doing. It goes straight to Danny's phone and he calls back to set a time, usually the same day. If it is leaking right now, skip the form and call (805) 330-3111.
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Slab leaks · Westlake Village
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. The shop is here. Monday to Friday, 9am – 5pm.