Commercial Leak Detection Perth
Leak Detection Specialists for Businesses, Strata Properties & Facilities
Expand Plumbing & Gas provides commercial leak detection for businesses, strata managers, property managers and facility teams across Perth and wider Western Australia. We use non-invasive leak detection equipment to locate hidden water, gas, roof, underground and fire service leaks with minimal disruption to your site.
From Perth metro sites to regional commercial projects in areas such as Kalgoorlie and Port Hedland, our WA-licensed plumbers have the experience to support businesses, strata properties and facilities across the state.
Rating + “24/7 | WA-licensed | Family-owned
Why Commercial Leak Detection Matters
A hidden leak in a commercial property can affect far more than one room. It can disrupt staff, tenants, customers, stock, flooring, ceilings, shared areas and maintenance budgets.
For strata managers, property managers and business owners, the priority is usually simple: find where the leak is coming from, understand how serious it is and know what needs to happen next.
Using professional leak detection equipment helps reduce unnecessary damage, avoid guesswork and give you a clearer repair pathway.
Signs Your Commercial Property May Have a Hidden Leak
Commercial leaks are not always obvious. In many cases, the first warning sign is a higher water bill, tenant complaint, musty smell, stain or recurring maintenance issue.
You may need commercial leak detection if you notice:
- Sudden increases in water usage or water bills
- Damp walls, ceilings, carpets or flooring
- Water stains in offices, foyers, amenities or shared areas
- Mould, mildew or musty smells
- Water sounds when fixtures are not being used
- Low water pressure in part of the building
- Wet patches near external pipework or landscaped areas
- Leaks around bathrooms, kitchens, laundries or plant rooms
- Roof or ceiling leaks after heavy rain
- Fire service pressure loss or recurring faults
- Gas odours or suspected gas leaks
For suspected gas leaks, call immediately and follow proper safety procedures.
Who We Help
We work with Perth businesses, strata teams, property managers and facility managers who need hidden leaks located quickly and clearly.

Businesses
Leaks can interrupt trading, damage fit-outs, affect staff access and create safety issues. We locate the source so repairs can be planned with less disruption.

Strata Managers
Strata leaks can affect common areas, multiple lots, shared plumbing and maintenance budgets. We help identify the likely source and explain what has been found.

Offices
Office leaks often show up as wet carpets, ceiling stains, damp walls, musty smells or tenant complaints. We test the affected area and narrow down the cause.

Warehouses
Warehouses may include long pipe runs, external services, hardstand areas, loading zones and amenities. Our equipment helps reduce unnecessary excavation.

Managed Facilities
Schools, medical centres, workshops, community buildings and mixed-use sites often need practical leak detection with clear communication and safe access.

Property Managers
Property managers need answers for owners, tenants, contractors and insurers. We help locate hidden leaks and recommend the next step clearly.
Our Commercial Leak Detection Process
Our process is designed to give businesses, strata managers, property managers and facility teams clear answers without unnecessary damage.
Why Choose Expand Plumbing & Gas?
Perth businesses, strata teams and property managers choose Expand Plumbing & Gas because we combine licensed plumbing experience with practical leak detection technology.
WA-Licensed & Fully Insured
Your site is handled by qualified plumbers who understand commercial plumbing systems, safe access and repair requirements.
Family-Owned Perth Business
You deal with a local Perth plumbing team, not a call centre or national directory.
Over 25 Years of Local Experience
Our experience helps us diagnose hidden leaks across offices, warehouses, strata sites, facilities and commercial buildings.
Non-Invasive Detection Methods
We use targeted equipment to help reduce unnecessary damage, cutting, digging and guesswork.
5-Star Google reviews
Our local reputation is backed by customers who trust us for reliable plumbing and leak detection support.
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!
Commercial Leak Types We Can Help Locate

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

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

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

Fire Service 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 Perth
Advanced Commercial Leak Detection Technology
Commercial properties can be complex. Pipework may run through walls, floors, ceilings, plant rooms, car parks, service ducts, common areas or underground zones. We use advanced leak detection tools to narrow down the issue before repair work begins. This helps reduce unnecessary cutting, digging and disruption.
- Thermal imaging cameras to detect temperature changes behind surfaces
- Acoustic listening equipment to identify escaping water in pipes
- Moisture meters to confirm damp areas and water spread
- Pressure testing to check whether a system is holding pressure
- Tracer gas testing for difficult-to-find leaks
Commercial & Strata Leak Detection Across Perth and WA
Expand Plumbing & Gas provides commercial leak detection across Perth for businesses, strata properties, offices, warehouses, managed facilities and property managers.
We can assist with leak detection in commercial buildings, office facilities, apartment complexes, warehouses, shared amenities, external service areas and properties affected by hidden water, roof, gas, fire service or underground leaks.
We service Perth metro areas including Perth CBD, West Perth, East Perth, Subiaco, Osborne Park, Balcatta, Malaga, Canning Vale, Welshpool, Fremantle, Joondalup, Midland, Cockburn, Bibra Lake, Bayswater, Victoria Park, Myaree and surrounding suburbs.
Featured Clients
Book Commercial Leak Detection in Perth
A hidden leak can disrupt operations, damage property and create unnecessary costs if it is left unresolved. Expand Plumbing & Gas can help locate the source using non-invasive leak detection technology and licensed plumbing experience.
Speak with our Perth team today to book commercial leak detection for your business, strata property, office, warehouse or managed facility.
Leak Detection FAQs
How do I know if I need commercial leak detection?
You may need commercial leak detection if you notice higher water bills, damp walls, ceiling stains, wet carpets, musty smells, low water pressure, roof leaks, water sounds or recurring maintenance issues.
Do you provide leak detection for strata properties?
Yes. We assist strata managers, body corporates and property managers with leak detection across common areas, units, external pipework, bathrooms, roofs and shared plumbing systems.
Can you find leaks without damaging walls or floors?
In many cases, yes. We use non-invasive methods such as thermal imaging, acoustic listening, moisture testing, pressure testing, tracer gas testing and pipe locating tools.
Do you provide leak detection for offices and warehouses?
Yes. We can help locate leaks in offices, warehouses, workshops, commercial buildings, external service areas, amenities and managed facilities.
Can you detect fire service leaks?
Yes. We can assist with leaks affecting fire mains, hydrants, hose reels and sprinkler lines, depending on the site and access requirements.
Can you repair the leak after finding it?
Where suitable, yes. As licensed plumbers, we can often complete the repair after locating the leak. If further access or specialist work is required, we will explain the next step.
How quickly can you attend a commercial leak detection job?
Expand Plumbing & Gas offers 24/7 plumbing availability. For urgent leaks, call (08) 6500 0025 so the team can assess the issue and advise the next available attendance time.
How much does commercial leak detection cost in Perth?
The cost depends on the property size, leak type, access, testing equipment required and how complex the investigation is. We provide clear pricing before work begins.