Simple locates, $200–$400
Short runs, decent access, leak confirmed and marked without drama.
Precision Leak Location
Concealed Leaks
Pinpointed In
Coogee
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 Coogee with instruments instead of crowbars, so the repair opens one small hole in exactly the right place.
- Licence 368473C, fully insured
- Acoustic, thermal & pressure testing gear
- Detection and the repair: one crew, one visit
How A Hidden Leak Gives Itself Up In Coogee
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 Coogee’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.
Sandy ground hides leaks better than anything else
Right on the coast, windblown sand and salty air work into drains and pipework, causing gradual blockages and corrosion. We flush them clean.
Sand drains freely, which means a leak that would create an obvious wet patch in clay produces nothing visible at all. The water simply goes down and away, and the first sign is the bill.
It is the main reason we rely on the meter test and acoustic work here rather than looking for surface evidence. Absence of a wet patch proves very little in this ground.
High water table, and what it hides
Heavy coastal downpours overwhelm blocked stormwater pits near the beach. We clear them fast to stop flooding.
Close to the water the ground is frequently wet regardless of any plumbing fault, which removes the most obvious diagnostic anybody has. Damp subfloor, moisture in the slab edge and standing water in a trench prove nothing here.
So detection near the water leans on isolation and the meter rather than observation, and on tracer gas where a leak is genuinely hidden by ambient groundwater.
Working in a house that cannot simply be opened up
Older cottages and interwar homes still run on original clay pipes prone to cracks and root intrusion. CCTV shows us exactly what’s going on.
Lath and plaster, pressed metal ceilings, original tiling and heritage listings all raise the cost of being wrong. In a period home the value of precise location is not the plumbing saved, it is the finishes not destroyed.
So we locate to the smallest area the equipment will support, and where a listing is in play we document what we propose to open before anything is touched.
Whose leak is it in an apartment?
Coogee’s many blocks of units share sewer and stormwater lines, so blockages need a camera to diagnose and the right access to clear.
The technical question and the financial question have different answers, and both need settling. Pipework serving only your lot is yours; risers, mains and common-property lines belong to the owners corporation.
A leak detection report that names the line, the lot and the direction of travel is what turns a dispute into a decision. That is what we write, because a description of where the water appeared settles nothing.
When a drain leak undermines itself
A cracked earthenware line leaking into its own trench washes out the bedding supporting it. Losing support, the pipe sags; sagging, it holds water; holding water, it collects solids and eventually blocks.
Which is why a drain that has begun to block regularly and a drain that is leaking are frequently the same drain at different stages. Finding it early is considerably cheaper than finding it once it has collapsed.
What the water is doing to the ground itself
A leak running into sandy ground does not just disappear, it moves material. Over months it can wash fines away from under pavers, a driveway or a slab edge, and the first structural sign is a section that has started to sink.
Coogee is a vibrant beachside suburb (postcode 2034) of golden sand and coastal cliffs, bordering Randwick, Clovelly and Maroubra. A mix of older homes and busy apartment blocks near the water means blocked drains are common, and we know Coogee’s pipes well.
If something outside has settled unevenly and there is no obvious reason, a leak upstream of it is a legitimate suspect and worth ruling out before anything gets relaid.
What it costs in Coogee
The standard hunt, $300–$500
First hour with the full instrument kit, acoustic, thermal, pressure, on a typical concealed leak.
Long or awkward traces, $100–$250/hr
Beyond the first hour: extended runs, tight access, multiple suspects to eliminate.
The genuinely hard ones, up to ~$900
Deep slab lines and multi-storey mysteries at the top of Sydney's range.
The repair itself, quoted on evidence
Priced off exactly what the detection proved, fixed before it starts, same crew, same visit, no second 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
Verify The Leak Exists
Meter protocol, bills, history. If the evidence says no supply leak, you hear that for free, not a finding fee for nothing.
Step 02
Convict One Line
Section-by-section pressure isolation, hot against cold, run against run, until exactly one line owns the loss.
Step 03
Mark The Centimetres
Thermal and acoustic sweeps along the guilty run until the signals stack on one spot. That mark is where, and only where, we open.
Step 04
One Hole, Done
Access at the mark, section repaired, pressure re-tested, surface closed. A run in terminal condition gets reroute numbers before, not after.
Meter Creeping With Everything Off?
Then it is real, running, and billing you daily. Detection this week beats discovery through a ruined floor next month.
Very possibly, and it is worth ruling out first. A cistern leaking internally wastes thousands of litres a quarter silently. Put a few drops of food colouring in the cistern, wait twenty minutes without flushing, then look in the pan. Colour in the bowl means the outlet valve is passing, usually a cheap part.
The meter test, and it is free. Turn off every tap and appliance that uses water, read the meter including the smallest dial, then check again an hour later without using anything. If the reading has moved, water is leaving the property. If it has not, you do not have a pressurised leak, which rules out a lot before you spend anything.
A standard detection visit generally runs $350-$650 depending on the size of the property and how much isolating is involved. Tracer gas or extensive thermal work sits above that. Market figures for 2026, not a quote, and if the meter test says there is no leak, you are told that rather than sold the rest of the process.
The ones that do not depend on seeing water: isolating sections and watching the meter, listening for the sound pressurised water makes through soil, and tracer gas where acoustics are inconclusive. Slower than following a wet patch, far cheaper than excavating on a guess.
Corrosion works faster in humid, salt-carrying air, and the small parts go first: tap bodies, external fittings, connections around a hot water unit. Many leaks we find on waterside properties are at a fitting quietly corroding in plain sight, and they are the cheapest to fix if caught before they let go.
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.
Very commonly. Failed waterproofing in a shower recess is the single most frequent source of inter-lot water damage in strata, and it presents as a damp ceiling patch months after the membrane gave up. Flood testing the recess is inexpensive and definitive, and it is a building repair, not a plumbing one.
Pinpoint The Leak This Week In Coogee
Instruments, evidence, one precise repair: and a bill that goes back to normal.
