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Home » Maintenance & Common Property » Common Property NSW » NSW: Common Property Water Leaks: A Strict Duty to Repair

NSW: Common Property Water Leaks: A Strict Duty to Repair

Published August 26, 2025 By Adrian Mueller, JS Mueller & Co Lawyers Leave a Comment Last Updated August 26, 2025

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This article is about the core responsibilities of an owners corporation to repair common property damage after heavy rainfall across NSW.

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Heavy rainfall across NSW has led to a significant surge in water leaks and defects within strata buildings. These leaks can damage both common and lot owner property, causing significant frustration for apartment owners.

As strata living continues its rapid growth across the state, it’s no surprise that disputes related to these issues have significantly risen. A key source of conflict involves water leaks and the subsequent damage they cause.

In this article, we look at the core responsibilities of an owners corporation to repair common property damage from water leaks.

The Duty to Repair

Section 106 of the Strata Schemes Management Act 2015 (Act) imposes on an owners corporation a duty to:

  1. properly maintain and keep in a state of good and serviceable repair the common property;
  2. where necessary, renew or replace any fixtures or fittings comprised in the common property.

This duty requires an owners corporation to fix any defects in the common property that are allowing water to leak into a lot.

The Nature of the Duty to Repair

The duty of the owners corporation to maintain and repair common property has been considered in a number of cases.

In those cases, the Supreme Court and NCAT has said that the duty to repair common property:

  1. is compulsory;
  2. is absolute; and
  3. is not a duty to use reasonable care to maintain and repair common property or to take reasonable steps to do so but a strict duty to maintain and keep in repair.

This means that an owners corporation cannot delay any repairs that need to be carried out to fix defects in the common property that are causing water to leak into a lot. Even if it is impossible to find contractors who are available to repair those defects, that does not provide an owners corporation with a lawful excuse for delaying any necessary repairs to common property.

Other Aspects of The Duty to Repair

There are other aspects of the duty to repair common property that are often overlooked, particularly in the case of new buildings or where a tenant damages common property.

The Supreme Court and NCAT have held that the duty to repair common property:

  1. extends to require the remediation of defects in the original construction of the building;
  2. must still be fulfilled even if the owners corporation did not cause the damage to the common property which needs to be repaired.

This means that, in general, an owners corporation cannot blame an original builder or developer for defects in the common property and refuse to fix them. However, if the owners corporation takes legal action against a builder or developer in respect of defects in the original construction of the common property, then the owners corporation can put on hold its obligation to repair common property defects.

Further, the cases say that even if a person damages the common property, in general, the owners corporation must still repair that damage, even though it may have a right to recover the cost of that repair from the offender. Alternatively, under section 132 of the Act, the owners corporation can apply to NCAT for an order to require an owner or occupier to repair damage to the common property caused by them. It appears that if the owners corporation takes legal action against an owner or occupier in NCAT to obtain that order, that allows the owners corporation to put on hold its duty to repair the damage.

Anything Else?

The duty to repair the common property also requires the owners corporation to carry out repairs which are not for the benefit of the majority of owners. Indeed, the owners corporation is obliged to carry out repairs to the common property that only benefit a single owner. This means that an owners corporation cannot refuse to repair a leaking window on common property on the basis that the leak only affects one lot.

Is there an Escape Route?

There are generally two ways for an owners corporation to relieve itself from its duty to repair common property (apart from the ways we have discussed above).

First, an owners corporation can pass a special resolution at a general meeting to determine that it is inappropriate to repair a particular item of common property. This can be done under section 106(3) of the Act but only if the decision will not affect the safety of the building or detract from the building’s appearance.

Second, an owners corporation can make a common property rights by-law that transfers its responsibility for the repair of a particular item of common property to one or more owners. The by-law needs to be approved by a special resolution at a general meeting. However, the by-law also needs to be approved by the owners who will be responsible for repairing the item of common property under the by-law. Often it proves difficult to obtain the consent of those owners.

What about Compensation?

Inclement weather can cause a substantial increase in claims for compensation being made by owners against owners corporations who have failed to repair defects that have allowed water to leak into and cause damage to lot property. Typically, those claims are made by investor owners for rental loss when the damage to their lots become so severe that the lots are uninhabitable. But compensation claims can also cover alternate accommodation expenses if an owner occupier is forced to move out of a lot due to damage caused by water ingress, the costs an owner incurs cleaning and repairing lot property (e.g. replacing saturated carpet), experts’ fees and legal costs. The liability of an owners corporation to pay compensation to an owner is a strict one.

This can make it difficult for owners corporations to defend compensation claims that are made by owners as a result of common property defects that allow water to leak into and damage lot property. Indeed, one Court has remarked that this puts an owners corporation into the position of an insurer.

Conclusion

Even though it may be difficult to find contractors who are able to repair common property defects, that does not provide an owners corporation with a lawful excuse for delaying essential repairs and maintenance. The duty to repair is a strict one and there are limited exceptions to that rule. This emphasises the importance of proactive and ongoing building maintenance to help avoid the problems that many owners corporations are now encountering.

Adrian Mueller
JS Mueller & Co Lawyers
E: [email protected]
P: 02 9562 1266

This post appears in Strata News #758.

Have a question or something to add to the article? Leave a comment below.

Read next:

  • NSW: Water Leaks, Defects and Disputes in Strata Buildings
  • NSW: NCAT, Common Property and Water Leaks
  • NSW: Q&A Who is responsible for water damage in a strata unit?

This article has been republished with permission from the author and first appeared on the JS Mueller & Co Strata Lawyers website.

Visit our Maintenance and Common Property OR NSW Strata Legislation.

Are you not sure about some of the strata terms used in this article? Take a look at our NSW Strata Glossary to help with your understanding.

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About Adrian Mueller, JS Mueller & Co Lawyers

For over 22 years Adrian has specialised exclusively in strata law, his knowledge and experience is second to none.

Known for his articulate and engaging presentation style he has delivered groundbreaking papers to strata lawyers, the strata industry and lectured extensively on strata law topics.

He has been published in many mainstream and industry broadcast and digital and print media publications for his extensive knowledge on strata law.

In recognition of his outstanding ability, Adrian has been admitted as a Fellow of the Australian College of Community Association Lawyers, the peak body for Australian strata lawyers.

View Adrian’s full profiles here and LinkedIn.

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