A blocked drain beneath a townhouse driveway, recurring moisture in a ground-floor garage or an overflowing pit after heavy rainfall can quickly become a costly strata dispute. The first question is usually: does strata cover drainage repairs? In many NSW schemes, the owners corporation is responsible when the affected asset is common property. But the answer depends on the registered strata plan, the location of the asset, its purpose and any relevant by-laws.
Getting this right before work starts protects lot owners, committees and strata managers from avoidable delays, disputes and repeated damage. A specialist inspection provides the evidence needed to identify the fault, define the affected asset and plan the right repair.
When strata is responsible for drainage repairs
Under the Strata Schemes Management Act 2015 (NSW), an owners corporation must properly maintain and keep common property in a state of good and serviceable repair. Drainage infrastructure often falls within that obligation, particularly where it serves multiple lots or is located in common areas.
Common examples include pits and grates in shared driveways, underground lines beneath landscaped common areas, roof drainage, detention systems, shared pumps and lines serving more than one residence. If a damaged line runs beneath common property and carries runoff from several lots, the repair will generally be an owners corporation matter.
That does not mean every drain in a strata scheme is automatically covered by strata. Some assets that appear shared may be contained within a lot boundary, while others may have been altered by an individual owner after the scheme was registered. The strata plan is the starting point, not assumptions based on where a grate or pipe happens to sit.
Start with the strata plan, not the visible problem
Drainage faults are often hidden. A surface depression, persistent damp patch or slow-draining pit may be some distance from the actual failure. Cracked pipes, displaced joints, root intrusion, collapsed sections and silt build-up are all common causes, particularly in older complexes.
Before allocating responsibility, review the registered strata plan and any accompanying documents. These establish lot boundaries and common property. In many standard strata plans, the internal surfaces of a lot form the boundary, while structural elements and services outside those boundaries remain common property. However, plans vary. A surveyor, strata manager or qualified legal adviser may be needed where boundaries are unclear.
A drainage inspection should then establish the practical facts: where the line runs, what it serves, its condition and whether there is a defined defect. CCTV inspection, asset tracing and condition reporting can turn a vague complaint into a repair scope supported by evidence.
Shared service versus single-lot service
The purpose of the drainage line matters as much as its location. A line that receives runoff from a shared roof, driveway or multiple lots is more likely to be a strata responsibility. A line serving only one lot may be the lot owner’s responsibility, especially where it sits entirely within that lot.
There are exceptions. A service that benefits one lot can still be common property if the strata plan identifies it that way. Conversely, an owner may be responsible for an asset serving several areas if a valid by-law has transferred maintenance obligations. This is why committees should avoid approving works based only on a contractor’s verbal view or an owner’s recollection of past repairs.
When the lot owner may need to pay
A lot owner may be responsible where the drainage issue is confined to their lot and the affected asset is not common property. This can include a private courtyard drain, a line installed solely for that lot, or damage resulting from unapproved alterations.
By-laws are particularly relevant where owners have added courtyards, decking, landscaping, external fixtures or altered drainage arrangements. A common property rights by-law may grant an owner exclusive use of an area while requiring them to maintain and repair associated assets. The wording matters. Exclusive use alone does not always transfer responsibility.
Responsibility can also change where an owner’s actions have caused damage to common property. For example, inappropriate landscaping, heavy loading over a buried line or unauthorised works may contribute to a failure. Establishing causation requires evidence, not guesswork. A clear condition report can help the committee make a fair and defensible decision.
Does strata cover drainage repairs through insurance?
Insurance and maintenance are related, but they are not the same thing. Building insurance may respond to sudden insured damage, depending on the policy terms, cause of loss and excess. It will not necessarily cover gradual deterioration, poor maintenance, root intrusion, accumulated debris or defects that developed over time.
For this reason, a committee should not delay essential investigation while waiting for an insurance decision. The owners corporation still has a duty to maintain common property. If a drainage defect is causing property damage, safety concerns or ongoing moisture ingress, the immediate priority is to identify the source and prevent further deterioration.
Keep records of complaints, photographs, prior maintenance, inspection findings and repair invoices. These documents support an insurance claim where one is available, but they also demonstrate that the scheme has acted reasonably and maintained its assets responsibly.
The practical process for strata committees
A structured process avoids the two most common mistakes: repairing the wrong asset and arguing about responsibility before the condition is known. Start by recording the issue, including the location, timing and any visible signs such as ponding, silt, odours, staining or damaged grates.
Next, arrange a specialist drainage inspection. The scope should identify the relevant pits, lines, discharge points, pumps or detention components, then document defects and likely causes. For larger or recurring issues, request a written report with photographs, findings, repair options and priorities.
Once the asset and fault are confirmed, compare the findings with the strata plan and applicable by-laws. The strata manager can then advise the committee on the approval pathway, while legal advice may be appropriate for disputed boundary or by-law questions. If the works are common property repairs, obtain a clear scope and proceed without unnecessary delay.
For significant repairs, the committee should consider both the immediate fix and the asset’s longer-term condition. Replacing one failed section may be sensible where the surrounding line is sound. If inspection shows widespread cracking, poor falls or recurring blockage points, a staged remediation plan may offer better value than repeated reactive work.
Why maintenance records matter
Drainage systems are easy to overlook until they fail. Pits fill with sediment, grates become obstructed, pumps wear out and buried lines deteriorate without obvious warning. Planned inspections and cleaning reduce the chance of disruptive failures and give strata committees a reliable record of asset condition.
This is especially relevant for complexes with basement areas, sloping driveways, large roof catchments, landscaped podiums or on-site detention systems. These sites often have multiple interconnected components, and a defect in one area can create consequences elsewhere.
A maintenance program should be based on site conditions, not a one-size-fits-all schedule. Older sites, leaf-heavy surrounds and properties with a history of flooding or blockages may need more frequent attention. Formal reporting also helps incoming committee members understand what has been inspected, repaired and budgeted for.
What to ask before approving repairs
A useful repair proposal should state what has failed, where the affected asset sits, the likely cause, the recommended method and any access requirements. It should also distinguish between urgent risk reduction and permanent rectification.
Ask whether the diagnosis is supported by inspection evidence, whether nearby assets have been checked, and whether the proposed repair addresses the root cause. A low upfront price is not good value if it only clears a blockage while leaving a collapsed or misaligned line in place.
When responsibility is uncertain, do not let the dispute prevent investigation. Establishing the facts early is usually the fastest way to protect the property and reach a fair decision. For strata drainage repairs, the strongest outcome is a documented diagnosis, a clearly allocated responsibility and work completed properly the first time.
