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Pipe Repair

Pipe Repair near you

Pipe repair covers the water pipes inside and around an Australian house: the cold water service running from the point of connection at the meter to every outlet, and the heated water pipework feeding the taps and the shower. It is the work behind a burst, a pinhole weeping inside a wall, a slab leak showing as a warm patch on the floor, a water bill that has climbed for no reason anyone can point at, and a meter that keeps turning when the whole house is asleep.

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This type of work often has to be done by a licensed or certified trade. Ask to see licences and proof of insurance before work starts.
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Pressure is the thing that distinguishes this work from drainage repairs. A drain leaks only when something is running through it, so a defect there is a slow, seasonal problem. A water pipe is pressurised every hour of the day, which is why a failure escalates from a stain to a ceiling on the floor within a single afternoon, and why the first thing worth learning is where your isolating valves are.

The National Construction Code covers the cold water service from the point of connection through to the points of discharge and requires it to be in accordance with AS/NZS 3500.1, with a working pressure of not less than 50 kPa and a static pressure within the building of not more than 500 kPa. That upper figure matters for repairs: a property running above it will keep producing failures, and replacing one length of pipe without addressing the pressure treats the symptom.

Signs you have a leaking or failing water pipe

  • The water meter keeps moving after every tap and appliance in the house has been turned off, which is the simplest whole-of-property leak test there is.
  • A water bill that has risen with no change in the household's habits, often the first evidence of a leak nobody can see.
  • Damp, discoloured or blistered plasterboard, or a stain on a ceiling that grows slowly over weeks.
  • A patch of floor that is unexpectedly warm underfoot, which can indicate a leak on the heated water line under a slab.
  • Water pressure that has dropped across the whole property rather than at one fitting.
  • The sound of running water in a wall or under the floor when nothing is in use.
  • An area of garden, paving or lawn that stays wet or unusually green when everything around it is dry.
  • Rust-coloured water, or flakes and grit coming through at the taps, which can point to corrosion inside older metal pipework.
  • Banging or hammering in the pipes, which is both a symptom of a pressure problem and a cause of future failures.

A pipe has burst: what to do in the first few minutes

  • Close the main tap at the water meter, which is usually near the front boundary of the property, since that stops almost every water emergency from getting worse.
  • Switch off power to the affected area at the switchboard if water is anywhere near wiring, lighting or appliances, and do not stand in water to reach anything electrical.
  • Use the fixture's own isolating valve where the failure is at a tap, toilet or appliance, so the rest of the house keeps its water.
  • Close the cold water isolating valve on the hot water unit if the failure is on the heated water side, which stops the tank refilling and feeding the leak.
  • Open a low tap after isolating to drain the pressure and the standing water out of the pipework rather than into the building.
  • Keep people out from under a ceiling holding water, since saturated plasterboard can come down all at once and without warning.
  • Photograph the failure and the damage before anything is cleaned up, moved or cut out, because that is what an insurer will want to see.
  • Ring your water utility's faults line as well if the water is surfacing at the boundary or in the street, since the fault may be on their side of the point of connection.

Why water pipes fail in Australian houses

Age and material explain most of it. Copper remains the most common water pipe in established housing here and generally lasts well, but it can develop pinhole corrosion from the inside, and a pinhole weeping into a wall cavity does far more damage over months than a burst does in an hour because nothing announces it. Older galvanised steel, still present in some pre-war housing, corrodes internally until the bore closes up, which shows first as poor flow and discoloured water rather than as a leak.

The second cause is mechanical, and it is usually avoidable. Excess pressure, water hammer from quick-closing valves in washing machines and dishwashers, and pipework that was never properly clipped all put repeated load on joints and fittings. Braided flexible hoses under sinks, vanities and toilets deserve their own mention: they sit under full mains pressure permanently, they have a finite life, and when one lets go while the house is empty the damage is limited only by how long it takes someone to come home.

The third is the ground itself. Much of Australia's housing sits on reactive clay soils that swell and shrink through wet and dry cycles, and that movement works on buried pipework and on anything cast into or running under a slab. Add tree roots seeking moisture around a service line, excavation and landscaping that nobody located the services for before digging, and the ordinary result of a long dry spell followed by heavy rain, and you have the reason a service pipe that behaved for decades suddenly fails.

What the pipework is likely to be made of

  • Copper, long the standard for water services in Australian homes, durable and repairable but susceptible to pinhole corrosion from the inside in some water conditions.
  • Cross-linked polyethylene and other flexible plastic pipe, now widely used in new work and re-pipes, run in longer continuous lengths with fewer joints in the wall.
  • Polyethylene, commonly used for the buried service line between the meter and the house and for outdoor runs.
  • Galvanised steel, found in older housing stock, which corrodes internally and restricts flow long before it visibly leaks.
  • Braided flexible hoses at fixtures, which are consumables with a limited life rather than permanent pipework, and a frequent cause of indoor flooding.
  • Compression, crimped and press fittings, along with soldered joints on copper, each with their own failure modes when made poorly or disturbed later.
  • Isolating valves and a pressure limiting valve, which are the parts that let the rest of the system be maintained and protected.
  • Products carrying WaterMark certification where the product type is on the Schedule of Products, since a licensed plumber is not permitted to install an uncertified product in those categories.

Finding the leak before opening the wall

The diagnosis is worth as much as the repair, because the expensive part of a concealed leak is usually the building work rather than the pipe. The sequence starts with isolation: close everything, watch the meter, and establish whether the property is losing water at all and roughly how fast. Isolating sections in turn, at the meter, at the hot water unit and at individual fixtures, narrows a whole-of-property loss down to a zone without anyone lifting a tool to the building.

From there it is about locating rather than guessing. Pressure testing an isolated section establishes whether it holds. Acoustic listening equipment picks up the sound of water escaping under pressure through a wall or a slab, thermal imaging can show the track of a heated water leak, and tracer methods are used where the others cannot reach. The point of all of it is to open the building in one place, on purpose, rather than in three places hopefully.

Then the repair is chosen against what was found and how much of the system is in the same condition. A single defect on otherwise sound pipework is a localised repair. Several failures on the same run, particularly pinholing on ageing copper or closed-up galvanised steel, point towards re-running that section or re-piping, because the rest of it is the same age and has lived the same life. Ask for the pressure to be measured while the plumber is there, ask whether a pressure limiting valve is fitted and functioning, and ask for the reinstatement of any wall, floor or paving to be stated in the quote rather than left to be discussed afterwards.

Who is allowed to repair a water pipe

This is licensed work. New South Wales requires the right licence or certificate before you do any plumbing, draining or gasfitting work, regardless of the cost of the work and regardless of whether the property is residential, commercial or industrial, and unlicensed work is a breach of the Home Building Act 1989. Victoria allows plumbing work only by a plumber holding current registration or a licence, or a plumbing apprentice. Western Australia requires a licence from the Plumbers Licensing Board under the Plumbers Licensing and Plumbing Standards Regulations, covering work on water supply, sanitary and drainage systems including the installation, alteration, repair, maintenance, testing and replacement of pipes and fittings.

Western Australia also shows where the homeowner boundary sits and how narrow it is. Its minor plumbing work category is the testing, maintenance, repair or replacement of existing plumbing already installed in place, with cold and heated water pipe fitting repairs and replacements on a like-for-like basis given as examples, and the state permits homeowners to do minor tasks such as replacing a showerhead or clearing a blocked pipe. Re-running a length of pipe through a wall, altering the layout or working on the service line is not in that category. Queensland treats work necessary for extending, altering, replacing or removing supply pipes in an existing building as one of the twelve categories of notifiable work under the Plumbing and Drainage Regulation 2019, registered with the QBCC on a Form 4 or 4a.

There is one more reason to insist on a licensed plumber that has nothing to do with the rules themselves. In Western Australia licensed plumbing contractors self-certify their work and remain responsible for it for six years from the time it is completed, and they must keep records of the minor plumbing work they perform for at least six years. A repair done by someone unlicensed comes with none of that, produces no certificate, and is exactly the sort of thing an insurer asks about after a water damage claim.

Reducing the chance of the next burst

  • Find the main tap at the meter and make sure everyone in the household knows where it is and can turn it, before you need it in the dark.
  • Have the static pressure at the property checked, and a pressure limiting valve fitted or replaced where the pressure sits above what the Code allows inside the building.
  • Treat braided flexible hoses as items with a service life rather than permanent plumbing, and have them replaced on a schedule instead of after a failure.
  • Read the meter occasionally with everything in the house turned off, which catches a concealed leak while it is still a repair rather than a restoration.
  • Turn the water off at the meter before going away for more than a few days, since an unattended failure is the one that ruins a house.
  • Deal with water hammer instead of tolerating it, because the shock loading that makes the noise is fatiguing joints elsewhere.
  • Have services located before digging, landscaping or installing posts and footings anywhere near the service line.
  • Keep an eye on the ground above the buried service line through the wet and dry cycles, since a wet patch in a dry spell is often the first sign.

What drives the cost of a pipe repair

  • Whether the leak has been located, since finding a concealed leak and repairing it are two separate pieces of work.
  • Where the pipe runs: exposed in a subfloor or roof space, buried in the yard, inside a wall, or cast into or beneath a slab.
  • The pipe material and its condition, and whether the repair is a single joint or a length that has to be renewed.
  • How much of the system is in the same condition, which is what turns a repair into a partial or full re-pipe.
  • The building work around the plumbing: opening a wall, ceiling, floor or paving and then making it good again.
  • Any excavation, and whether services have to be located before anyone digs.
  • Whether a pressure limiting valve or isolating valves need to be fitted or replaced as part of putting the system right.
  • Whether the work is an after-hours emergency to stop an active leak, and whether a second visit in daylight completes the permanent repair.

Pipe Repair: frequently asked questions

How do I know whether I have a hidden water leak?

Use the meter. Turn off every tap and appliance that uses water, including the washing machine and any irrigation, then read the meter, wait an hour or two without using any water, and read it again. If the numbers have moved, water is escaping somewhere. That single test tells a plumber more than a description of a damp patch, and it distinguishes a leak from condensation.

Can I repair a leaking water pipe myself?

Water pipework is licensed plumbing work. New South Wales requires a licence or certificate for any plumbing work regardless of its cost, and Victoria permits it only by a registered or licensed plumber or an apprentice. Western Australia's minor plumbing work category covers like-for-like repairs and replacements of existing pipe fittings, and it permits homeowners to do minor tasks such as replacing a showerhead or clearing a blocked pipe, but re-running pipe or altering the system is licensed work.

Why do my pipes bang when a tap or the washing machine shuts off?

That is water hammer, the shock of moving water being stopped suddenly, and it is worth fixing rather than living with. It is often a sign of pressure that is too high, and the Code sets a static pressure within the building of not more than 500 kPa. The same shock loading fatigues joints and fittings elsewhere in the house, so water hammer is frequently the reason behind a later failure somewhere unrelated.

Is the pipe between the meter and my house my responsibility?

Generally the pipework on your side of the point of connection is yours, and the Code treats the cold water service as running from that point of connection through to the points of discharge. The exact boundary is set by your own water utility, so if water is surfacing near the meter or in the street, ring their faults line before booking a plumber and let them establish which side of the connection the fault is on.

Is it worth re-piping instead of repairing?

It depends on whether the failure is an event or a pattern. One defect on sound pipework is a repair. Repeated pinholes on ageing copper, or galvanised steel that has closed up internally, mean the rest of that run is the same age and in the same condition, and paying repeatedly to open walls for individual repairs generally costs more in building work than renewing the section once. Ask for both to be priced against what was actually found.

How does LokalMatch work for a burst or leaking pipe?

Deal with the water first: close the main tap at the meter, and ring your utility's faults line if the water is surfacing at the boundary, because LokalMatch is not a dispatch service and does not attend jobs. You then describe the problem once, with your postcode, what you can see and whether the water is isolated, and plumbing businesses covering your area contact you directly. Those businesses pay LokalMatch for the requests. LokalMatch does not do the work, does not set or quote prices, and does not vet, rank or recommend anyone.

Sources

  1. National Construction Code Volume Three, Part B1 Cold water services
  2. NSW Government: Plumbing, draining and gasfitting work
  3. Government of Western Australia: Plumbers licensing
  4. Government of Western Australia: Information for licensed plumbers
  5. Victorian plumbing regulator: Plumbing registration and licensing
  6. QBCC: Categories of notifiable work
  7. WaterMark Certification Scheme: What is WaterMark?
  8. ACCC: Repair, replace, refund, cancel

Written by the LokalMatch editorial team. Last reviewed 14 September 2026. How we write and check our guides

What affects the cost of pipe repair

Prices depend on the details of your project. We only publish price ranges when they’re backed by real LokalMatch quote data or reliable sources. Until then, here’s what usually changes the price:

  • Type of problem and how easy it is to find
  • Access to pipes behind walls, under floors or underground
  • Parts and fixtures chosen
  • Age and material of the existing pipes
  • Emergency, evening or weekend service
  • Permits and inspections, where required

How to compare plumbers before you hire

  • Hire a plumber who is licensed for this work in your area, especially for gas water heaters, sewer lines and new plumbing.
  • Ask whether they charge a flat rate or by the hour, and what the call-out fee covers.
  • For leaks and drain problems, choose someone who explains the cause and doesn't only clear the symptom.
  • Get the scope in writing for larger jobs such as a water heater, sewer repair or re-piping.
  • If it's urgent, ask how soon they can arrive and whether after-hours rates apply.

Questions to ask plumbers before you hire

  • Are you licensed for plumbing work in my area?
  • Do you charge a flat rate or by the hour, and is there a call-out fee?
  • What do you think is causing the problem?
  • Will this work need a permit or an inspection, and who will arrange it?
  • Will you need to open walls, floors or the yard to reach the problem?
  • What warranty do you offer on parts and labour?

When to call a pro for pipe repair

  • An active leak: shut off the main water valve if you can reach it safely, then call a plumber.
  • Sewage backing up into drains or the basement
  • No hot water, or water pooling around the water heater
  • Pipes that may have frozen during a cold snap

Pipe repair permits and local rules

Some pipe repair work needs a permit or has to meet local bylaws. Rules vary by municipality, so ask your pro whether a permit is needed and who will apply for it — and check with your city or town if you’re unsure.

Permits and licensing

Seasonal maintenance

This job is part of our home maintenance checklists for:

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