Leak Detection Perth
Leak Detection Specialists for Homes & Businesses
Expand Plumbing & Gas are the trusted choice for leak detection Perth families and businesses rely on. As a family-owned, WA-licensed plumbing company, we’re available 24/7 to locate and fix hidden leaks quickly. Using advanced, non-invasive methods, we protect your property and save you money on costly water bills and repairs.
Rating + “24/7 | WA-licensed | Family-owned
Why Professional
Leak Detection Matters
Hidden leaks can cause serious problems if left untreated — from mould and rising water bills to structural damage that costs thousands to repair. Our expert team provides reliable leak detection services Perth locals trust. With advanced technology and years of experience, we detect leaks early and help prevent long-term damage to your home or business.
Using our specialised, non-invasive equipment makes the detection process easier and faster, reducing potential damage to your property.
Signs You May Have a Hidden Water Leak
Common signs you may need professional leak detection include:
- Sudden spikes in your water bill
- Damp or discoloured walls and ceilings
- Persistent mould or mildew growth
- Sounds of running water when taps are off
- Puddles or wet patches in your yard
- Bubbling paint or warped flooring
Think you have a leak? Call our Perth plumbers today.
Our Leak Detection Process
Our plumbers use the latest equipment to find leaks with precision and minimal disruption. With acoustic sensors, thermal imaging cameras and tracer gas testing, we can pinpoint hidden leaks behind walls, under floors, and underground — all without unnecessary digging or damage.
Why Choose
Expand Plumbing & Gas?
Perth families and businesses choose us because we provide more than just plumbing — we deliver peace of mind.
WA-licensed & fully insured plumbers
Family-owned Perth business
Over 25 years of local experience
EXCELLENT Based on 181 reviews Posted on Wray AveTrustindex verifies that the original source of the review is Google. Thanks Scott for an excellent job installing my new gas stove-top and mixer tap. Really fast response and service. Much appreciated. AntonPosted on Lina PlattsTrustindex verifies that the original source of the review is Google. Great service with very friendly service men. ThanksPosted on Indrawati SunarjaTrustindex verifies that the original source of the review is Google. Had issue with having cold shower, was thinking of replacing the water tank (5 years old). Called Expand Plumbing (based on good reviews they have) and they sent Ben to our place within hours. He then simply clean the valve and we got hot water again with very reasonable fee (no call out fee). Ben was fantastic and explained to us the problems clearly. Highly recommended!!Posted on Delta SlugTrustindex verifies that the original source of the review is Google. Outstanding and prompt service. Staff are friendly and knowledgeable. Recommend unreservedly. Glenn BullCreekPosted on HSTrustindex verifies that the original source of the review is Google. Thankyou Alex for the quick response to send out the plumbers. Very efficient and nice people to deal with. Highly recommendedPosted on Nina AhmadTrustindex verifies that the original source of the review is Google. This is the second time using Expand plumbing. Both times the work was done promptly and professionally. Ben was very courteous and explained the fault and how it was to be fixed. Thank you for a great job and I will recommend you to others.Posted on A Triggered BoiTrustindex verifies that the original source of the review is Google. My gas System needed certification, and James was all over it. He double checked everything and made sure it was up to spec Service was excellent, on time and quick. Would absolutely recommend Plumbdog and their servicesPosted on nicole schnitzlerTrustindex verifies that the original source of the review is Google. Thank you Alec and Sarah! I know diddly squat about water pipes, so when our front water meter was going off like a frog in a sock, and it was almost 5pm - needless to say, I got a bit panicked. Sarah sent me the easy-to-navigate booking form, and instantly, Alec was on his way. Alec figured it was a water corp issue and he very accommodatingly called them for me and explained the issue. The nicest, fastest and professional service I have had in a long time. Expand to the rescue!Posted on Shayne SmithTrustindex verifies that the original source of the review is Google. I recently had a fantastic experience with Expand Group Plumbing! They sent out a couple of young guys who were not only well-mannered but also efficient and professional. They got the job done quickly and made sure to clean up thoroughly before leaving. I couldn't be happier with the service I received. Highly recommend Expand Group Plumbing for anyone in need of reliable and quality plumbing services!Posted on Claud LinTrustindex verifies that the original source of the review is Google. Ben and Ryan helped fix a leak in my kitchen caused by cracks in the drain. We also discovered that the drain was blocked, and they assisted with clearing the blockage. Their service was very professional. Thank you very much!

Water Leak Detection Perth
Hidden pipe leaks behind walls, ceilings and floors. We pinpoint bursts and slow leaks with non-destructive testing, then provide a clear repair plan. Water Leak Detection Perth

Roof & Ceiling Leak Detection
Storm ingress, failed flashing, valley faults, skylight penetrations—we find the entry point and stop repeat damage. We utilise thermal imaging and drone technology for accurate, non-destructive identification of leaks on all roof types. Roof Leak Detection Perth

Shower & Bathroom Leak Detection
Membranes, wastes, mixer bodies and cracked grout—our testing isolates the fault before tiles come up. Shower Leak Detection Perth

Underground & External Leak Detection
Garden/retic lines, mains from the meter, and external pipework. Non-invasive methods to locate leaks without unnecessary digging. Underground & External Leak Detection

Gas Leak Detection (Licensed)
Make-safe comes first. We trace, isolate and repair gas leaks to meet WA compliance. Gas Leak Detection

Fire Leak Detection
Fire mains, hydrants, hose reels and sprinkler lines. We locate losses, identify faulty sections and advise make-safe steps to keep systems operational. Fire Leak Detection
Advanced Leak Detection Technology
At Expand Plumbing & Gas, we invest in industry-leading technology to deliver the most accurate results:
- Thermal imaging cameras to detect hidden temperature changes
- Acoustic listening devices for underground or wall leaks
- Tracer gas technology for pinpoint accuracy in pressurised pipes
- Pipe location tools to map systems without excavation
Commercial & Strata Leak Detection in Perth
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Don’t let a hidden leak turn into an expensive repair. Call the trusted team for leak detection Perth and get help anytime, day or night.
Leak Detection FAQs
How do I know if I need professional leak detection?
If you’ve noticed damp walls, mould growth, bubbling paint, or unexplained increases in your water bill, it’s time to call a leak detection specialist. Our Perth plumbers use advanced tools to confirm and locate hidden leaks.
Can you find leaks without digging or damaging walls?
Yes. We use non-invasive equipment such as acoustic sensors, tracer gas, and thermal imaging to pinpoint leaks behind walls, under floors, and underground — with minimal disruption.
This also means we aren’t creating unnecessary damage across the detection and repair process. We pinpoint the exact location to ensure any repair work is targeted and keeps your property as intact as possible.
Do you provide both residential and commercial leak detection in Perth?
How quickly can you attend a leak detection job in Perth?
How much does leak detection cost in Perth?
Costs vary based on the leak’s complexity, but we always provide a clear quote after inspection. Our non-invasive technology helps minimize damage, saving you money on repairs.
In many cases, especially with burst pipes your insurance may cover the detection costs. We recommend confirming this with your policy provider.