Leak Detection Sydney | Water & Gas Leak Specialists

Gas & Water Leak Detection — Randwick & Eastern Suburbs Sydney

Sterling Gasfitting & Plumbing provides leak detection Sydney homeowners, landlords and strata managers call on when a hidden water or gas leak needs finding fast. Hidden leaks cause real damage if they go unnoticed — rising water bills, damp walls, mould, and in the case of gas, genuine safety risk. We use non-invasive detection technology to find the source fast, without unnecessary demolition.

Our Leak Detection Sydney Methods

• Thermal imaging — spotting hidden leaks behind walls, under floors and within slabs without cutting into them.
• Acoustic & electronic pipe locating — specialist listening equipment to pinpoint underground and in-wall leaks precisely.
• Nitrogen pressure testing — isolates and confirms leak locations in gas and water lines.
• Trace gas testing — advanced detection for leaks that don’t show up through standard methods.
• Moisture detection — identifying water ingress behind walls and under flooring before it becomes structural damage.

Signs You May Have a Hidden Leak

An unexplained rise in your water bill is often the first clue, even when no leak is visible anywhere on the property. Other common signs include damp or discoloured patches on walls and ceilings, a musty smell that won’t go away, the sound of running water when every tap is off, or a gas smell near an appliance or meter. Strata buildings should also watch for unexplained dampness in common areas or the floor below a bathroom or kitchen.
If you smell gas, the safest first step is to turn off the gas supply at the meter if it’s safe to do so, avoid using switches or naked flames, ventilate the area, and call a licensed gasfitter immediately rather than waiting to see if the smell clears on its own.

Why Choose Sterling for Leak Detection

• Licensed and insured — fully qualified plumbers and gasfitters, Lic: 486972c.
• Non-invasive first — we locate before we dig or cut, minimising disruption and repair costs.
• Same-day response for active leaks and suspected gas leaks across the Eastern Suburbs.
• Clear reporting — useful for insurance claims and strata records where a leak has caused damage.

How Our Leak Detection Process Works

1. Call or book online — tell us what you’ve noticed: a bill spike, damp patch, sound or smell.
2. On-site investigation — we use thermal imaging, acoustic listening and pressure testing to narrow down the source.
3. Confirmed location — we pinpoint the leak before any cutting or digging begins.
4. Repair or referral — straightforward leaks are repaired on the spot; larger jobs are quoted upfront.

Areas We Service

As a leak detection specialist across the Eastern Suburbs, we regularly work in Randwick, Kingsford, Kensington, Coogee, Maroubra, Bondi and surrounding suburbs — see our full service area list.

Related Services

Leaks often show up alongside other plumbing and gas issues. If the leak is affecting your hot water system, see our Hot Water Systems page. For gas leak compliance and connections, see Gas Fitting & Compliance. For general plumbing work alongside a leak repair, see Plumbing Services.

FAQ

Will you need to cut into my walls?
In most cases, no — our thermal imaging and acoustic equipment locates leaks precisely, so any repair work is targeted rather than exploratory.

How fast can you attend?
We prioritise active leaks and suspected gas leaks, and can typically attend same-day for urgent cases across the Eastern Suburbs and Randwick area.

Can you detect a gas leak as well as a water leak?
Yes — we’re licensed gasfitters as well as plumbers, and use nitrogen pressure testing and trace gas detection to locate gas leaks safely.

Do you provide a report for insurance or strata purposes?
Yes — we can provide clear documentation of the leak location and cause, which is often needed for insurance claims or strata building records.