The simple locate: $200–$400
Short accessible runs: confirmed, pinpointed, marked without ceremony.
Non-Invasive Leak Detection
Water Leak
Detection In
Cremorne
Somewhere between the meter and your taps, water is escaping, you can see it on the bill even when you cannot see it anywhere else. We pinpoint concealed leaks across Cremorne with instruments instead of crowbars, so the repair opens one small hole in exactly the right place.
- Licence 368473C, fully insured
- Acoustic, thermal & pressure instruments
- Found and fixed by the same crew
Three Instruments, One Answer, In Cremorne
A hidden leak cannot help giving itself away three times over. Escaping water under pressure sings at frequencies acoustic gear can chase along a pipe run; it changes the temperature of whatever it soaks, which thermal imaging paints in false colour through wall sheeting and slab surfaces; and it bleeds pressure from whichever isolated section of pipework it lives on, which a gauge catches cold. One signal suggests; three signals triangulate.
That triangulation is what you are actually buying. Where the readings converge, we mark the floor, and in Cremorne’s renovated homes, where pipework wanders in ways no council plan ever recorded, that mark routinely sits metres from where anyone would have started digging on instinct. The difference between those two points is the difference between lifting three tiles and re-doing a bathroom.
Is it a leak, or is it the weather?
Land falling to the harbour strains ageing pipe joints and lets stormwater scour and shift lines, causing silt build-up and chokes.
A recurring damp problem near the water often has nothing to do with plumbing. Wind-driven rain, a high tide against a low subfloor, and stormwater with nowhere to go all produce moisture that looks like a leak and is not.
The way to tell is timing. Damp that tracks the weather is not plumbing; damp that is constant regardless of conditions usually is. Keep a note of when it appears, it is genuinely useful evidence.
A century of pipework, and no plan of any of it
Leafy heritage streets sit above old clay sewers, and roots pushing into cracked joints are the leading cause of blockages we clear in Cremorne.
Older homes are a record of everyone who has worked on them. Original runs, a post-war bathroom teed in somewhere unexpected, a laundry added in the sixties, and nothing documented.
That is why detection on a heritage-era property starts by establishing where the pipes actually go. Tracing the layout is half the job and it is the half that prevents opening the wrong wall.
Shower recesses: the most common leak in any block
Failed waterproofing in a shower is the single most frequent source of inter-lot water damage in strata, and it rarely presents as a leak at all, it presents as a damp patch on a neighbour's ceiling months after the membrane gave up.
Blocks along Military Road share ageing stacks that clog with grease, fat and wipes, needing a proper hydro-jet clear.
It is worth ruling in or out early because it is a building repair rather than a plumbing one, and the process for approving and funding it is different. Flood testing the recess is inexpensive and definitive.
Water surfaces downhill of where it escapes
Cremorne is a harbourside pocket of Sydney’s Lower North Shore (postcode 2090), running down to the water at Cremorne Point and bordering Neutral Bay, Cremorne Point and Mosman. Its steep streets, heritage homes and Military Road apartments make for a real mix of drainage work.
On sloping ground, water leaving a pipe travels along whatever path is easiest until something stops it. By the time it appears it can be metres from the failure, several properties away, and always further down.
So the damp patch is a starting point, not a destination. We work uphill from it with correlation equipment rather than digging where the evidence happens to be visible.
Smell as evidence
A persistent sewer smell around a property with no obvious source is worth investigating properly. It usually means either a dry or failed trap, or a break in a line venting where it should not.
A smoke test finds both quickly, introduce smoke into the system and watch where it emerges. It is unglamorous, cheap, and conclusive in a way that sniffing around is not.
What it costs in Cremorne
The standard job, $300–$500
First hour with the full kit, pressure isolation, thermal, acoustic, on a typical concealed leak.
The long trace, $100–$250/hr after
Extended runs, awkward access and multi-leak eliminations, beyond hour one.
The hard cases, up to ~$900
Deep slab lines and multi-storey tracing at the top of the Sydney range.
Then the fix, priced on proof
Quoted off exactly what detection found, repaired through the marked spot, same crew, same visit, one call-out.
Compare it with exploratory demolition, which costs more than detection before it has even guessed right once. Figures here are indicative of the 2026 Sydney market rather than a quote from us, you get your own number as a fixed price before any work starts.
The Hunt, In Four Moves
Step 01
Step 01
Confirm Before Chasing
The meter test done properly, plus your bills. If the evidence says there is no supply leak to find, you hear exactly that, free of a detection invoice.
Step 02
Corner It
Isolating pipework section by section against a pressure gauge, hot versus cold, line by line, convicts one run and acquits the rest.
Step 03
Mark The Spot
Acoustic tracking and thermal imaging walk the guilty run until the signals stack. The X on the floor is accurate to centimetres.
Step 04
One Hole, One Fix
Access opens exactly at the mark; the failed section is repaired and pressure-tested. If the run's condition argues for a reroute instead, both numbers land first.
The Dial Moved, Didn’t It?
Then it is real, running, and billing you daily. Detection this week beats discovery through a ruined floor next month.
It is the most common way a concealed leak is found, usually after it has run a full quarter. Compare three bills rather than two: a single high quarter can be a garden or visitors, but a steady climb with no change in the household is a leak until something proves otherwise.
Because excavation is where the money goes, and water rarely surfaces where it escapes. The plumbing repair on a typical service leak is minor; getting to it is most of the cost, and getting to the wrong place is all of the cost with none of the benefit.
It is elimination, not one instrument. Isolate sections and watch the meter to find which line is losing water, then listen along it with acoustic equipment for the sound escaping water makes. Where that is inconclusive, tracer gas is introduced into the isolated line and detected at the surface.
Frequently, near the water. Wind-driven rain, a high tide against a low subfloor and stormwater with nowhere to go all produce moisture that looks like a leak. The tell is timing, damp that tracks the weather is not plumbing, damp that is constant usually is. Keep a note of when it appears.
Only as a last resort, and to the smallest area the equipment supports. In a period home the value of precise location is not the plumbing saved, it is the lath and plaster, pressed metal and original tiling that stays intact. Where a listing is involved we document what we propose to open first.
Often not. Water tracks along the top of a slab and through penetrations, sometimes several metres laterally before entering your ceiling. Thermal imaging and moisture mapping from below usually establish the direction it is arriving from before anyone needs access to a neighbour's bathroom.
Usually either a dry or failed trap, or a break in a line venting where it should not. A smoke test finds both quickly: introduce smoke into the system and watch where it emerges. Unglamorous, cheap, and conclusive in a way that sniffing around is not.
Locate It This Week Anywhere In Cremorne
Non-invasive detection, evidence before quotes, and one crew for the find and the fix.
