Located with acoustic, pressure and thermal equipment before anything is opened. In a house like this the plumbing is replaceable and the fabric around it is not.
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In a modern home, finding a leak the hard way is annoying. You open some plasterboard, you patch it, you paint it, and a fortnight later nobody can tell.
In a Burwood Victorian or Federation house the calculation is completely different. Behind the wall is lath and lime plaster. Around it is cedar joinery, pressed metal, a cornice run or tessellated tiles that were made by people who are no longer alive.
Cut into that and you are not doing a repair, you are commissioning a reconstruction, and a convincing one costs several times what the plumbing did. Two exploratory holes instead of one is not a minor difference here.
So we locate precisely first, with acoustic, pressure and thermal equipment that touches nothing. Then one opening, in the right place. That sequence is worth paying for in this housing in a way it genuinely is not everywhere.
Lime plaster and lath will often dry and stabilise. What kills it is water still arriving, and being rushed into removing something that would have recovered.
Lath and lime plaster, cedar joinery, pressed metal, original tiling. None of it comes from a warehouse and none of it goes back the way it came out.
So the cost of a leak in a heritage house is not the plumbing repair. It is what the water reached on its way to becoming visible.
That changes the economics of detection completely, which is what the rest of this page is about.
Masonry carries moisture without showing it, and water follows joists and bearers a long way before it surfaces anywhere.
So a damp patch that has just appeared is not a leak that has just started. It is one that has finally saturated enough material to show.
By then it has been working on plaster and timber for some time, which is why acting on the first sign matters more here than almost anywhere.
Turn off every tap and appliance, then watch the meter for fifteen minutes. Movement with nothing running means water is genuinely leaving on your side.
A still meter with visible damp means the damp has another cause: rising damp, a failed damp course, a blocked subfloor vent, or a downpipe discharging against the wall.
In a heritage house those non-plumbing causes are genuinely common, and the test separates them at no cost.
Close the inlet valve at the hot water system, leave everything else as it was, and watch the dial for another couple of minutes.
Continued movement is the cold side. Movement stopping is the unit itself or the hot pipework beyond it.
One thing to rule out first on a hot result: a relief valve dribbling steadily gives the same reading and is a small, cheap repair rather than a hidden leak.
Acoustic listening, pressure testing and thermal imaging narrow a whole house down to a point without opening a wall, lifting a floor or disturbing a ceiling.
On a building where every finish is irreplaceable, that is not a convenience. It is the entire point.
The cost of locating properly is a small fraction of the cost of opening the wrong wall once.
Staining is not the same as failure. A great deal of old plaster recovers once the source is stopped and the wall is allowed to dry properly.
Cutting it out on the day is frequently premature, and it is irreversible in a way that waiting is not.
So stop the water, locate the fault, repair it, and then give the fabric time before anybody decides what needs replacing.
Water follows the fall of a joist, the back of a stud or the line of a bearer and appears wherever it finally escapes, which in a large house can be a room away.
In solid masonry it can also travel within the wall itself before surfacing.
So the wet spot is a starting point rather than an address, and cutting into it is frequently the wrong first move.
Copper thins from the inside and eventually weeps rather than bursting. Galvanised narrows internally over decades with nothing visible from outside.
In a house with a century of alterations, the transitions between eras of pipework are where it goes first.
Neither announces itself, which is why the meter test matters more on this housing than on anything modern.
Not in the dark, in the rain, on the night it matters. Find the meter, find its tap, and check the tap actually turns on a dry afternoon.
On properties of this age they seize, and a seized meter tap is its own small job on a quiet Tuesday rather than a crisis at midnight.
Learn the isolating valves indoors too, because closing one of those handles a specific failure without taking water off the house.
The braided hoses under vanities and behind cisterns last around five years and fail all at once, at mains pressure, frequently while nobody is home.
In a house where what gets wet is original fabric, the consequence is considerably worse than in a modern one.
They are cheap and quick to replace, and they are the one thing here worth doing before anything is wrong.
One is a repair. Two in different places on the same run is the installation reporting its condition, and it changes the question from what to fix to what to plan.
In a heritage house that plan is worth making deliberately, because the disruption of repiping is best done once and best done alongside other work.
What decides it is where the failures have been and what the rest of the run looks like when tested.
A written account of the fault, its location and the repair is straightforward to produce while somebody is still on site and effectively impossible later.
It supports an application to Sydney Water for a concealed leak allowance, where the circumstances meet their criteria, and it supports a claim if one follows.
Whether you qualify for anything is not ours to say. Having the evidence is.
Agreed in writing before work starts. These are indicative 2026 ranges. On this housing the detection spend is what keeps the opening small, and the opening is where the real cost sits.
Isolated and stopped, any hour. The damage stops before anything else is decided.
Acoustic, pressure and thermal. A large old house sits at the upper end.
Once located. Access moves this figure far more than the pipe does.
Cheap now, and the worst possible failure in a house full of irreplaceable fabric.
What failed, where, and an honest view on what is likely to dry out and recover.
On a burst the water is isolated before anything else is discussed. Every extra minute is more fabric to dry out.
Acoustic, pressure and thermal testing to narrow the whole property to a single point.
Cut once, where the fault actually is, rather than searching through original plaster and joinery.
Pressure tested before closing up, and a straight view on what will dry and recover rather than what should be cut out.
Shut it off at the meter if you can reach it, then ring. In this housing the difference between ten minutes and an hour is measured in plasterwork.
Call 1300 381 569Because of what is in the way. In a project home, opening a wall means plasterboard and a coat of paint. In a Victorian or Federation house it can mean lath and plaster, original cedar joinery, pressed metal, tessellated tiles or a cornice run that nobody makes any more. Those are not repairs, they are reconstructions, and a good one costs multiples of the plumbing. So the goal is to open one small area rather than three, and that is entirely a matter of how precisely the leak was located first.
Easily, and in a house of this construction it is common. Water follows the fall of a joist, a bearer or a wall cavity and emerges wherever it can, which may be a room away or not at all. Solid masonry walls can carry moisture for a long time before anything shows on a surface. The reliable test is the water meter: shut everything off and watch it for fifteen minutes. Movement with nothing running means water is escaping.
Acoustic equipment listens for escaping water through the structure, pressure testing isolates which line has lost integrity, and thermal imaging finds the temperature difference a hot water leak leaves behind. None of them touch the building. Between them we narrow a whole house to a point, and only then does anything get opened, once, in the right place.
Not necessarily, and it is worth not assuming the worst. Lime plaster and lath will often dry and stabilise once the water stops, and staining alone is not structural failure. What does destroy it is water continuing to arrive, and being rushed into cutting out a section that would have survived. Stop the water first, let it dry, then decide. We will tell you honestly what we think will recover.
In a house like this, more than usual. A drip that would be a nuisance elsewhere is, in a solid-walled Victorian house, water sitting against materials that do not shed it well and cannot be swapped out cheaply. It is also the version most likely to have been running for months before anyone noticed. The bill for acting early is very small next to the bill for the alternative.
They are among the most common causes of serious water damage in Australian homes, with a service life of about five to ten years. When one lets go it does not drip, it releases mains pressure continuously until somebody reaches the meter. In a house full of irreplaceable fabric, an unattended failure of that kind is genuinely the worst plumbing outcome available, and replacing them is cheap.
An emergency make-safe is $250 to $500. Leak detection is $300 to $600 depending on how much of the house has to be covered, and on a large old house it sits at the upper end. Repair once located is $400 to $1,200 for most jobs, with access moving that far more than the pipe does. Replacing flexible hoses is $150 to $350.
Tell us roughly how old the house is and whether there is original plaster, joinery or tiling near where you think it is. That changes how carefully we work.
Located with equipment before anything is opened, cut once, and an honest view on what will recover on its own.
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