Who Is Responsible for Repairs in an Owners Corporation?

07 May 2026 Posted in Maintenance & Repairs

Quick Answer: In an Owners Corporation, repair responsibility is usually determined by whether the issue relates to private lot property or common property. While owners are generally responsible for internal fixtures and finishes within their lot, the Owners Corporation is typically responsible for shared infrastructure and common property areas. However, issues involving water leaks, balconies, shared plumbing, waterproofing systems, or older buildings can become more complicated and often require contractor investigations to determine the true source of the problem.


Repair disputes are one of the most common challenges within apartment and townhouse developments. Water leaks, balcony defects, roofing issues, and shared plumbing problems can quickly create confusion between lot owners and the Owners Corporation, particularly when responsibility is not immediately clear.

In many Victorian Owners Corporations, responsibility is determined by whether the issue relates to private lot property or common property. However, responsibility can become difficult to determine when shared services, waterproofing systems, insurance claims, or older buildings are involved.

Understanding how repair responsibility is generally assessed can help owners and committees reduce delays, avoid disputes, and respond to maintenance issues more effectively.

What Is Common Property?

Common property generally refers to areas and infrastructure shared by all owners within the development.

This may include:

  • Roofs and gutters
  • External walls
  • Shared plumbing and drainage
  • Driveways and pathways
  • Stairwells and hallways
  • Shared building services

The Owners Corporation is generally responsible for maintaining and repairing common property.

This can include organising contractors, coordinating emergency works, and arranging insurance notifications.

What Is Private Lot Responsibility?

Private lot property is generally the responsibility of the individual owner.

This often includes:

  • Internal walls and paint finishes
  • Flooring and carpets
  • Cabinetry and appliances
  • Internal fixtures and fittings
  • Non-shared plumbing fixtures

One of the most common misconceptions we see is owners assuming anything inside their apartment automatically falls under private responsibility.

In reality, the source of the issue is often more important than where the visible damage appears.

Why Water Leaks Become Complicated

Water ingress issues are among the most disputed repair matters within Owners Corporations.

Problems involving balconies, roofs, drainage systems, and shared plumbing can sometimes affect multiple lots simultaneously.

Responsibility can become complicated when:

  • The source of the leak is unclear
  • Water travels between lots
  • Shared infrastructure is involved
  • Previous renovations have altered the structure
  • Older waterproofing systems have deteriorated

In many cases, contractor investigations are required before responsibility can be properly determined.

Plumbers, leak detection specialists, or building consultants may need to provide reports identifying the actual source of the issue.

Common Grey Areas

Some repair issues sit between private lot property and common property.

Examples can include:

  • Balcony tiles versus balcony membranes
  • Plumbing located within walls or slabs
  • Air-conditioning units attached to external walls
  • Shared stormwater drains
  • Courtyard fencing and retaining walls

Older townhouse and apartment developments can present additional challenges because subdivision plans and building standards have changed significantly over time.

The Importance of the Plan of Subdivision

One of the most important documents when determining repair responsibility is the Plan of Subdivision.

The Plan of Subdivision helps define:

  • Lot boundaries
  • Common property areas
  • Shared infrastructure
  • Maintenance responsibilities

We regularly see situations where owners assume a repair falls under the Owners Corporation, only for investigations to confirm the issue sits within the private lot boundary.

Similarly, damage appearing inside a lot may still originate from common property infrastructure.

A Practical Example

For example, an owner may notice water damage to an internal bedroom wall after heavy rain and assume it is their own responsibility.

However, after investigation, a roof plumber may identify failed flashing or deteriorated roofing on common property as the true source of the leak.

In these situations, contractor reports and supporting evidence become critical in determining responsibility and assisting insurers with claim assessments.

Insurance Can Add Complexity

Insurance involvement can sometimes create further confusion.

Depending on the situation, there may be:

  • Owners Corporation insurance involvement
  • Private lot insurance involvement
  • Multiple insurers assessing the same issue

One of the most common misunderstandings we see is confusion around whether insurance covers the cause of the issue, the resulting damage, or both.

For example, insurance may cover water damage caused by a burst pipe, but not necessarily the failed pipe itself.

Why Early Investigation Matters

Delays in investigating leaks and repair issues can often increase both damage and costs.

Prompt attendance by contractors can help:

  • Identify the source of the issue earlier
  • Prevent additional property damage
  • Reduce insurance complications
  • Improve repair coordination

Clear communication between owners, committees, contractors, and managers also plays an important role in helping disputes progress more efficiently.

If your Owners Corporation requires assistance managing repair issues, water leaks, or maintenance coordination, contact our team.

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