Who is responsible for strata plumbing repairs in bathrooms? (Bathroom | Building & Approvals)

Published on 19 November 2025 at 21:18

Bathroom renovations in Sydney often involve complex plumbing systems, especially in multi-unit buildings and strata schemes. Understanding who is responsible for plumbing repairs in bathrooms within a strata property is crucial for homeowners, renovators, and strata managers alike. Incorrect assumptions about responsibility can lead to disputes, delays, or even costly repairs. This guide explains how strata plumbing works in Sydney, outlines responsibilities, and provides practical advice for bathroom renovations.


1. Understanding Strata Plumbing in Sydney

In Sydney, many homes are part of strata schemes, including apartments, townhouses, and terraces. Strata living involves shared walls, floors, and plumbing systems. Bathrooms, as wet areas, often rely on shared pipes, drainage systems, and water supply lines.

Key terms for understanding strata plumbing:

  • Lot: Your individual unit or apartment.

  • Common Property: Shared areas of the building, including main water pipes, sewer lines, gutters, and sometimes walls and floors.

  • Strata Scheme: The legal structure governing ownership and responsibilities for lots and common property, regulated under the Strata Schemes Management Act 2015 (NSW).

In bathrooms, plumbing can be part of lot property (your responsibility) or common property (strata responsibility). Determining which applies is critical for knowing who covers repairs.


2. Lot vs Common Property: Who Repairs What?

In general, responsibility for bathroom plumbing repairs in a strata property is divided as follows:

a) Lot Owner Responsibility

  • Internal Pipes and Fixtures: Pipes and fittings contained entirely within your lot, including taps, vanity pipes, shower mixers, toilet cisterns, and flexible connections.

  • Internal Leaks: Leaks or faults arising from taps, toilets, showers, or vanity plumbing entirely within your unit.

  • Renovation Upgrades: Replacement of fixtures, tiles, and vanity units inside your bathroom, unless it affects common property.

Examples:

  • Replacing a leaking tap in your ensuite.

  • Fixing a clogged toilet within your lot.

  • Installing a new shower mixer or vanity basin.

b) Strata / Common Property Responsibility

  • Shared or Main Pipes: Pipes that pass through walls, floors, or ceilings connecting multiple units.

  • Vertical Stacks: Sewer or waste stacks running from top to bottom through the building.

  • Main Water Supply Lines: Pipes supplying water to multiple units.

  • Drainage Systems: Shared stormwater or sewer lines.

Examples:

  • Leaks in pipes running inside a wall shared between two apartments.

  • Blocked waste stacks affecting multiple bathrooms.

  • Burst main water supply pipe serving the entire building.

Sydney strata buildings vary in design, so what constitutes common property must be confirmed by reviewing the strata plan and the by-laws.


3. How Responsibilities Are Determined

a) Strata Plan and By-Laws

  • The strata plan identifies which parts of the building are lot property versus common property.

  • By-laws outline owner and strata responsibilities, including maintenance obligations.

b) Nature of the Plumbing Issue

  • If the issue originates inside your lot and affects only your bathroom, you are generally responsible.

  • If the issue affects multiple units or main pipes, strata or the owners’ corporation typically handles repairs.

c) Expert Assessment

  • Licensed plumbers or strata managers can identify whether a pipe is part of common property or lot property.

  • In disputes, strata plans, building drawings, or professional assessments are used to clarify responsibility.


4. Role of the Owners’ Corporation (Strata Body) in Bathroom Plumbing

The owners’ corporation manages common property in Sydney strata buildings. Responsibilities include:

  • Organising Repairs to Common Property: Scheduling licensed plumbers for shared pipes or stacks.

  • Funding Repairs: Costs are typically covered by the strata fund, which is paid by owners via strata levies.

  • Approving Renovations: Ensuring that bathroom renovations do not compromise common property, including plumbing, waterproofing, or structural elements.

  • Compliance and Safety: Ensuring all work meets Australian Standards (AS 3500 plumbing, AS 3740 waterproofing) and council approvals.

In practice, if a plumber identifies a burst pipe inside a shared wall affecting your bathroom and other units, the strata committee coordinates the repair, and costs are shared according to the by-laws.


5. Lot Owner Responsibilities During Bathroom Renovations

When renovating your bathroom in a Sydney strata property, lot owners must:

  1. Engage Licensed Tradespeople: Ensure plumbers, waterproofers, and electricians are licensed.

  2. Check Common Property Boundaries: Avoid altering pipes or structures that belong to common property without strata approval.

  3. Notify the Strata Manager: For any work that may affect shared plumbing, waterproofing, or structural elements.

  4. Obtain Approvals: Depending on the scope, renovations may require a Complying Development Certificate (CDC) or a Development Application (DA), especially if common property or structural elements are involved.

  5. Coordinate Inspections: Ensure that private certifiers or council inspectors approve any waterproofing or plumbing work affecting wet areas.

Failing to comply can lead to strata disputes, fines, or insurance issues.


6. Strata Plumbing Repairs: Practical Examples in Sydney

  1. Leaking Shower Pipe Inside a Wall in Pyrmont Apartment

    • The pipe services only one unit; repair is the lot owner’s responsibility.

    • If the leak damages neighbouring units due to wall penetration, strata may coordinate repairs.

  2. Blocked Waste Stack in a North Sydney Apartment

    • Stack affects multiple bathrooms; repair is common property responsibility.

    • The strata committee schedules licensed plumbers and covers costs from the strata fund.

  3. Burst Main Water Supply Line in Bondi Beach Townhouse

    • Repairs affect all units in the building; owners’ corporation funds and organises repairs.

  4. Bathroom Renovation in a Glebe Heritage Apartment

    • Plumbing work inside the unit may be lot owner responsibility.

    • Any changes to shared walls or pipe stacks require strata approval before commencing.


7. Insurance Considerations

In Sydney, insurance coverage depends on responsibility:

  • Lot Owner Insurance: Covers damage and repairs inside your unit, including plumbing issues originating within your lot.

  • Strata Insurance: Covers common property plumbing and shared systems.

Proper documentation, including plumbing reports, strata approvals, and waterproofing certificates, is essential to avoid claims being denied.


8. Tips for Managing Strata Plumbing Repairs in Bathrooms

  1. Understand Boundaries: Review your strata plan to know which pipes and walls are common property.

  2. Engage Licensed Professionals: Always use licensed plumbers experienced in strata plumbing.

  3. Communicate with Strata: Notify the strata committee for repairs affecting shared systems.

  4. Document Work: Maintain records of inspections, certificates, and approvals.

  5. Plan Renovations Carefully: Avoid accidental damage to shared pipes or walls; ensure compliance with AS 3500, AS 3740, and council requirements.

  6. Coordinate Insurance Claims: Notify your insurer and strata insurer promptly for coverage.


9. Conclusion

In Sydney strata properties, responsibility for bathroom plumbing repairs depends on whether the affected pipes are within your lot or part of common property:

  • Lot Owner Responsibility: Internal fixtures and pipes contained entirely within your bathroom.

  • Strata / Owners’ Corporation Responsibility: Main water lines, waste stacks, and pipes shared between units.

Understanding these boundaries, engaging licensed tradespeople, obtaining necessary approvals, and coordinating with the strata committee ensures repairs are conducted legally, safely, and efficiently. Proper management protects your investment, maintains building safety, and prevents disputes with neighbours or strata management.

Sydney homeowners undertaking bathroom renovations should always check strata by-laws, council requirements, and Australian Standards to determine responsibilities before commencing any plumbing works. By following these guidelines, you can ensure a smooth renovation process, avoid costly disputes, and protect both your unit and the broader strata building.

Visit www.mb9.com.au to find out more information about kitchen, bathroom and house renovation services from MB9 Australia Pty Ltd.

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