1300 021 601

Leak Detection Sydney

Pressure testing, acoustic listening, moisture detection — find hidden leaks before damage adds up.

Call Now — 1300 021 601 Get a Free Quote

Licensed & Insured · NSW Lic. 489072C · 5.0★ across 51 Google Reviews

Licensed

NSW Lic. 489072C

Insured

$10M public liability

Same-Day

Response across Sydney

5-Star Rated

Local Sydney plumbers

Get a fast quote — we'll call you back today

3 fields. 60 seconds. Same-day response across Sydney.

What we do

Undetected leaks cause significant water damage, increased water bills, and long-term structural issues if left unresolved. At Help Plumbing, we provide accurate and non-invasive leak detection services across Sydney, using modern diagnostic equipment to locate leaks without unnecessary damage to your property.

Our licensed plumbers use advanced techniques including pressure testing, acoustic listening devices, moisture detection, and targeted inspections to identify leaks within walls, floors, ceilings, underground pipework, and external services. Where drainage is involved, CCTV inspection equipment may also be used to assess pipe condition and confirm the source of the issue.

Once a leak is located, we clearly explain the cause, the extent of the problem, and the most effective repair options available. We don't rely on guesswork — our process ensures repairs are precise, minimising disruption while reducing the risk of future leaks or repeat failures. Our licensed and experienced plumbers are experts in their field and stay up-to-date with the latest industry techniques.

How it works

Our standard process for every leak detection job.

  1. 1

    Pressure-test

    Isolate the system and pressure-test to confirm a leak exists and roughly locate the affected section.

  2. 2

    Acoustic listen

    Specialised microphones detect the sound of escaping water through walls, floors, and slabs.

  3. 3

    Moisture map

    Thermal imaging and moisture meters identify wet spots before damage becomes visible.

  4. 4

    Repair plan

    Pinpoint the exact location, propose the least-invasive repair option, quote, and schedule.

Common leak detection scenarios we handle

Real-world situations we see across Sydney every week — chances are one of these matches what's happening at your place.

  • Hidden slab leak under concrete. Warm spot on the floor, raised water bill with no obvious cause, sound of running water with everything turned off. Slab leaks are hard to find without the right gear.
  • Leak inside a wall cavity. Damp patch, paint bubbling, mould growth, or a musty smell — water is travelling somewhere it shouldn't. We pinpoint the source before opening the wall, not after.
  • Underground supply-line leak. Soggy patch in the lawn, drop in water pressure, climbing water bills. Sometimes a council issue (their main); sometimes yours. Pressure-testing tells us which.
  • Bathroom waterproofing failure. Recurring damp on a wall or ceiling below a wet area is almost always membrane failure. We confirm the source so the eventual repair targets the actual fault.

Common issues we fix

  • Hidden slab leaks under concrete floors
  • Leaks in wall cavities — damp patches, paint bubbling, mould growth
  • Underground supply line leaks — soggy lawn, increased water bills
  • Leaking shower membranes or bathroom waterproofing failures
  • Pinhole leaks in old copper pipes
  • Pool and spa leaks — equipment, plumbing, or shell failure

What's included in our leak detection job

Every leak detection job from Help Plumbing covers the full diagnostic-to-cleanup arc — not just the headline task.

  • System pressure-test to confirm a leak exists + rough section
  • Acoustic listening with specialised microphones through walls, floors, slabs
  • Thermal imaging + moisture meter scan where appropriate
  • Pinpoint location marked above ground (no destructive search)
  • Quoted repair options — least-invasive first
  • Repair scheduled separately once you've reviewed and approved scope

Transparent pricing — no surprises

Every leak detection job is quoted upfront in writing — diagnostic first, then a fixed price agreed before any work starts. No call-out surprises, no halfway-through "variations". If the scope changes (hidden damage discovered during the job, for instance), we pause, explain the variation, and quote it before continuing. You decide whether to proceed.

We don't quote leak detection jobs sight-unseen over the phone. Diagnostic first, written quote second, work third — in that order. It's slower but it means the price you agree is the price you pay.

Why choose Help Plumbing for leak detection

Help Plumbing has been delivering leak detection across Sydney for years — NSW Plumbing Licence 489072C, $10M public liability insurance, and a 5.0★ rating across 51 Google reviews. Every job is carried out by a qualified, licensed plumber (not an unlicensed sub) with the right diagnostic equipment and the experience to use it correctly. We service 97 Sydney suburbs from our Earlwood workshop across the Inner West, Eastern Suburbs, Hills District, Parramatta, Western Sydney, Ryde, and Blue Mountains — same-day response is standard, after-hours and emergency callouts on the same number.

Leak Detection — FAQs

  • Within 10–30 cm typically, depending on the surface and pipe material. Accurate enough to make a small targeted repair instead of opening up entire walls or floors.

  • No — our methods are non-invasive. We only break into surfaces once the leak is precisely located and you've approved the repair.

  • Fixed-price call-out plus diagnostics. Quoted upfront before we start. Repair cost is separate and quoted after the leak is found.

  • Yes. Slab leaks are one of our specialties — we use combination acoustic and pressure techniques designed for concealed pipes.

Suburbs we service for Leak Detection

Help Plumbing services leak detection across 97 Sydney suburbs — from our base in Earlwood out across the Inner West, Eastern Suburbs, Hills District, Parramatta, Western Sydney, Ryde, and Blue Mountains. Tier 0 callout suburbs include Earlwood, Marrickville, Ashfield, Petersham, Dulwich Hill — but we cover the full Sydney metro and beyond. If your suburb isn't listed below, give us a call — we likely cover it.

Get a free quote for leak detection

Same-day service available, with typical 1-hour response on urgent plumbing issues. We aim to respond to all enquiries within 1–2 business hours.

Or call directly: 1300 021 601

Call Now — 1300 021 601