
Running a strata scheme in Wollongong comes with a long list of maintenance duties, and plumbing is one of the most frequent sources of confusion. When a pipe bursts or a drain blocks, the first question is always the same: who pays for it? For strata managers, committee members, and apartment owners, understanding the line between body corporate and lot owner responsibility is essential.
Under the Strata Schemes Management Act 2015, the owners corporation (commonly called the body corporate) is generally responsible for plumbing issues related to common property. This article explains what that means in practice, what your compliance obligations are, and how local providers such as Plumbing Creations handle body corporate plumbing across Wollongong, Kiama, and Shellharbour.
What Is Common Property Plumbing Under NSW Strata Law?
The Strata Schemes Management Act 2015 governs how strata schemes in New South Wales are managed, and it clearly distinguishes between common property and lot property. Common property includes areas shared by multiple units, such as external walls, ceilings, floors, and any area outside the boundaries of individual lots.
For plumbing, this means that the following items fall under the responsibility of the owners corporation:
- Pipes embedded in common property walls
- Sewers and drains that serve more than one unit
- Roof guttering and downpipes
- The main water supply stopcock
- Backflow prevention and TMV compliance testing

Common Property vs Lot Property Plumbing Responsibility
Knowing exactly where the boundary lies can save your strata committee time and money. The table below outlines typical plumbing issues and who is responsible under NSW law.
| Plumbing Issue | Responsible Party |
|---|---|
| Burst pipes inside boundary walls or beneath the floor | Owners corporation |
| Water seepage through external walls | Owners corporation |
| Blocked sewers or drains serving multiple lots | Owners corporation |
| Guttering and roof plumbing | Owners corporation |
| Main water supply stopcock | Owners corporation |
| Faulty taps, showerheads, sinks or toilets inside the lot | Lot owner |
| Internal plumbing fixtures and fittings | Lot owner |
| Hot water systems serving only one lot | Lot owner (unless on common property) |
Individual lot owners are responsible for plumbing inside their unit's "airspace", which includes everything from the taps on the basin to the showerhead and the toilet cistern. If a tap leaks or a sink blocks, the lot owner generally arranges and pays for the repair. The same applies to internal plumbing fixtures that are not part of the common property infrastructure.
Common Scenarios That Cause Disputes
Disputes often arise when the source of a leak is hidden. For example, water may appear on a lot owner's ceiling but originate from a burst pipe in the common property slab above. In these cases, the owners corporation is responsible for repairing the pipe, but the lot owner may need to reinstate their own ceiling.
If the leak is inside a wall that is common property, the body corporate covers the pipe repair, while the lot owner is usually responsible for internal finishes unless the strata by-laws say otherwise. Clear communication with your strata manager and a licensed plumber early on can prevent disagreements from escalating.

Compliance Obligations for Strata Plumbing in the Illawarra
Beyond repairs, owners corporations have ongoing compliance duties under NSW law. These include regular testing and servicing of backflow prevention devices and thermostatic mixing valves (TMVs).
Backflow prevention devices stop contaminated water from flowing back into the mains supply — a critical safety measure in multi-storey buildings. Thermostatic mixing valves control hot water temperature to prevent scalding. Both must be tested at prescribed intervals by a licensed plumber.
Failing to meet these obligations can lead to fines and liability if an injury occurs. Plumbing Creations offers mandatory compliance testing as part of our strata compliance services across Wollongong, Kiama, and Shellharbour, helping body corporates stay on the right side of the regulations.

Strata Plumbing Services in Wollongong, Kiama, and Shellharbour
Plumbing Creations provides comprehensive strata plumbing across Wollongong, Kiama, Shellharbour and the greater Illawarra region. Our services include:
- 24/7 emergency repairs
- Blocked drain clearance & CCTV inspection
- Pipe relining (no-dig sewer repair)
- Backflow prevention & TMV compliance testing
- Centralised & individual hot water
- Roof & gutter maintenance
When choosing a strata plumber, it pays to look for a provider that understands the Strata Schemes Management Act and can identify whether a job falls on common or lot property. A good plumber will also help your body corporate stay compliant with backflow and TMV testing requirements, reducing the risk of non-compliance.

How to Handle a Plumbing Emergency in a Strata Scheme
When a plumbing emergency occurs, the first step is to determine whether the issue is on common property or inside a lot.
If it's on common property (for example, a blocked main sewer or a burst pipe in a common wall), the lot owner or tenant should contact the strata manager or the body corporate's emergency contact. Many schemes use a 24/7 after-hours service that can dispatch a licensed plumber around the clock.
If the emergency is inside the lot (such as a burst flexi hose under the sink), the lot owner must call their own plumber. Having a list of vetted strata plumbing providers ready before an emergency occurs can save precious time and prevent water damage from escalating.

Frequently Asked Questions
Who is responsible for blocked drains in a Wollongong apartment?
If the blocked drain serves only one lot, the lot owner is responsible. If the drain is a common sewer or drain that multiple units share, the owners corporation must arrange and pay for the clearing. CCTV inspection can confirm the location and cause of the blockage, helping to assign responsibility correctly.
What if a leak is inside a wall that is common property?
The owners corporation is responsible for repairing the leaking pipe inside the common property wall. However, the lot owner may need to reinstate any internal finishes such as plasterboard, paint, or tiles, unless the strata by-laws assign that cost to the body corporate. Check your scheme's by-laws for specific wording.
Does the body corporate cover hot water system repairs?
It depends on where the hot water system is located. If it serves only one lot and is inside that lot's boundary, the lot owner pays. If it is a central system on common property that supplies multiple lots, the owners corporation is responsible for its repair and maintenance.
How do I find a licensed strata plumber in Wollongong?
Look for a plumber who advertises strata-specific services and has experience working with owners corporations. Plumbing Creations offers licensed strata plumbing in Wollongong, Kiama and Shellharbour — including backflow prevention testing, TMV servicing, CCTV drain inspection, pipe relining and 24/7 emergency response.
Need a Strata Plumber in Wollongong?
Understanding the split between common and lot property is one of the most important duties for Wollongong strata committees. By working with a trusted local plumber, you can keep your building compliant, handle emergencies quickly, and avoid costly misunderstandings.