Building defects can have significant financial and operational consequences if not addressed early.
Obtaining timely legal advice can help protect both individuals and Owners Corporations, while informing the most appropriate path to rectification or recovery.
Bugden Allen advises on building defect inspections in Melbourne, offering support across all aspects of building defect matters.
Whether the issue involves water ingress, structural cracking, defective cladding or non-compliant building work, our aim is to help resolve defects as early as possible.
We offer specialist legal advice across the property lifecycle, including all levels of building defect matters.
In this article, we discuss the definition of a building defect, along with some of the specific issues you may come across and what they mean for you.
What is a Building Defect? Understanding the Basics
A building defect is a fault, deficiency or non-compliance in building work that affects the quality, safety, functionality or value of a building.
Defects can be structural or non-structural, and may arise from defective design, workmanship, materials or non-compliance with applicable building legislation, the National Construction Code, Australian Standards or the terms of the building contract.
Building defects can range from relatively minor cosmetic issues through to serious structural failures or safety concerns.
They may become apparent shortly after construction is completed or develop over time as the building ages or is exposed to environmental conditions.
In Victoria, homeowners, Owners Corporations and other eligible parties may have legal rights to pursue builders and other responsible parties where defective building work has occurred.
In many cases, legal action for defective building work can be commenced within 10 years of the date the occupancy permit is issued, the certificate of final inspection is issued, or the building work is completed.
This will depend on the circumstances of the claim and the applicable legislative framework.
Building defect disputes can involve breaches of statutory warranties, contractual obligations, the Building Act 1993 (Vic), or non-compliance with the National Construction Code.
Determining the cause of a defect, identifying the responsible parties and understanding the available legal remedies often requires both technical and legal expertise.
There are numerous variables to consider legally when addressing any type of building defect.
These can determine who is responsible for rectification, who can bring a claim, and which parties may be liable.
Bugden Allen works alongside building consultants and other technical experts to understand the nature of a defect and its legal significance.
Building Defect Categories & Common Building Defects in Australia
Building defect matters can arise from a wide range of structural or non-structural issues affecting residential, commercial and mix-use developments. While every matter is unique, some of the more common building defects we encounter include:
- Structural defects: faults affecting load-bearing elements such as foundations, slabs, columns, beams, retaining walls and roof framing.
- Waterproofing defects: failures in waterproofing systems, membranes, flashings or seals that result in water ingress, moisture damage, timber decay, corrosion or mould growth.
- Building service defects: defects involving electrical, plumbing, gas, fire safety or mechanical systems that affect the safe operation of the building
- Building envelope defects: issues affecting roofs, windows, cladding, balconies, façades and external walls that allow water penetration or compromise the building’s performance.
In many cases, multiple defects are interconnected.
For example, a waterproofing failure may lead to structural deterioration, corrosion or mould growth, while inadequate structural design can result in movement that causes cracking and water ingress.
Identifying the underlying cause of a defect often requires an investigation by independent building consultants or engineers before legal liability can be properly assessed.
Building Defect Liability Period
In Victoria, building work must comply with the Building Act 1993 (Vic), the Building Regulations 2018 (Vic), the National Construction Code (NCC) and the relevant Australian Standards.
Where building work fails to meet these requirements, it may constitute defective or non-compliant building work and give rise to a range of legal remedies.
The timeframe for pursuing a building defect claim depends on the nature of the defect, the legal basis of the claim and the legislative framework that applies.
In many cases, domestic building claims can be brought within 10 years of the date of the occupancy permit, certificate of final inspection or completion of the building work, although different statutory regimes and limitation periods may apply depending on the circumstances.
Where defective work involves a failure to comply with the NCC or other applicable building standards, property owners may have access to regulatory remedies through the Building and Plumbing Commission (BPC).
This includes inspections and rectification orders where appropriate.
The introduction of Victoria’s Home Warranty Insurance Scheme on 1 July 2026 has also changed the insurance framework for eligible domestic building claims where a builder has passed away, disappeared or become insolvent.
Bugden Allen can help identify which regime applies to your specific matter, and who you should be engaging with regarding your building defects.
Every case is different, so it’s important to gather all the necessary information before taking legal action.
Reach out to us today.
Building Code Violations & Compliancy Issues
Building code violations and non-compliance issues occur when work falls below implied warranty standards or breaches the Building Act 1993 (Vic) or the National Construction Code (NCC).
These typically require distinct legal resolution pathways, depending on the complexity of the matter.
- Common code violations include:
- Waterproofing failures
- Fire safety non-compliance
- Structural inadequacy
- Ventilation and energy inefficiency
In Victoria, the legal pathways for non-compliance issues and code violations can involve any of the following:
- Building and Plumbing Commission (BPC): the primary regulatory body responsible for issuing formal rectification orders.
- Relevant Building Surveyor (RBS): responsible for inspecting mandatory construction stages.
- Victorian Civil and Administrative Tribunal (VCAT): where builders refuse to rectify issues, property owners can escalate matters to VCAT.
Difference Between Defects & Non-Compliance
| Aspect |
Non-Compliant Building Work |
Standard Building Defect |
| Definition |
Building work that does not comply with the requirements of the Building Act 1993 (Vic), the National Construction Code (NCC), relevant Australian Standards, approved plans or permit conditions. |
A fault, deficiency or failure in the building works that affects the quality, safety, functionality or intended performance of a building. |
| Legal basis |
Assessed against prescribed legislative and regulatory requirements. |
Assessed against the contractual obligations, accepted building practices, statutory obligations and the standard expected of a competent building practitioner. |
| Cause |
Failure to comply with the applicable building legislation, code, permits or approved documentation.
Deviation from code requirements, unapproved variations, or work completed without required permits/approvals |
Defective design, poor workmanship, unsuitable materials, construction errors or inadequate supervision. |
| Overlap |
Non-compliant building work is often defective, but this is not always the case. |
A building defect may exist even where the work complies with the NCC or other regulatory requirements. |
| Example |
Combustible cladding installed contrary to NCC fire performance requirements or work completed without the required building approval. |
A waterproofing failure resulting in water ingress despite the original design complying with the applicable building standards. |
| How it’s identified |
Building surveyor inspections, compliance audits, expert reports or comparison against approved plans, permits and the NCC. |
Building inspections, engineering assessments, destructive testing or defects becoming apparent over time through cracking, movement or water ingress. |
| Typical remedy |
Rectification to achieve compliance, regulatory action or rectification orders issued by the Building and Plumbing Commission. |
Rectification, damages or other remedies available under contract, statute or common law |
| Relevant claim |
Claims or regulatory action under the Building Act 1993 (Vic) and related legislation. |
Claims arising under contract, statutory warranties, negligence or other applicable causes of action. |
The key distinctions between non-compliance and building defects are important to be made aware of, as the two concepts are related but not identical.
Non-compliance focuses on whether building work meets the requirements of the Building Act 1993 (Vic), the National Construction Code and other legislative standards.
A building defect is a broader concept, referring to work that is faulty, unsafe or not fit for its intended purpose.
In practice, many building defect disputes involve both defective and non-compliant work.
However, it is possible for building work to be non-compliant without causing an obvious defect, or for a defect to arise even where the work technically complies with the applicable codes and standards.
Understanding the distinction is essential when determining liability, identifying the responsible parties and selecting the appropriate legal pathway for resolving a building dispute.
Seeking legal advice on a building defect claim can help you identify the best path forward.
Identifying Building Defects in Melbourne Properties
Building defects are not always immediately apparent.
While some issues become obvious shortly after construction is completed, others may take months or even years to emerge as the building settles or is exposed to weather and everyday use.
Some common signs of a potential building defect include:
- Cracking in walls, ceilings or foundations
- Doors and windows that stick or no longer close properly
- Uneven floors
- Roof leaks or water ingress
- Water stains, dampness or mould
At Bugden Allen, we recommend engaging a licensed professional to carry out a comprehensive investigation.
We can assist you throughout this process and guide you through the next steps if a defect is identified.
Building Defect Inspection Process
| Step |
Action |
| 1. Document & Assess |
Gather all relevant documents, including the building contract, approved plans, specifications, occupancy permit or certificate of final inspection, warranties and any correspondence. Engage a registered building practitioner, engineer or independent building consultant to inspect the property and prepare a report identifying the defects and any non-compliance with the Building Act 1993 (Vic), the National Construction Code (NCC) or applicable Australian Standards. |
| 2. Notify the Builder |
Notify the builder of the alleged defects in writing. Include the expert report, supporting photographs and a reasonable opportunity for the builder to inspect the property and rectify the defects. Maintaining clear records of all correspondence is essential should the dispute escalate. |
| 3. Lodge a Complaint / Seek Dispute Resolution |
If the builder refuses to rectify the defects or the dispute cannot be resolved, the matter may be referred to the Building and Plumbing Commission (BPC). Depending on the circumstances, the BPC may facilitate dispute resolution, investigate the complaint or exercise its statutory powers, including issuing rectification orders where appropriate. |
| 4. Escalate to VCAT |
Where the dispute remains unresolved, a claim may be commenced in the Victorian Civil and Administrative Tribunal (VCAT) or another court of competent jurisdiction, depending on the nature of the dispute. VCAT may make legally binding orders requiring rectification works, payment of damages or other appropriate relief. |
Who is Responsible for Fixing Building Defects in Melbourne?
Typically, the licensed builder who signed the original building contract is responsible for fixing building defects.
This applies to both standalone houses and multi-unit complexes.
However, who is responsible for coordinating repairs can depend on the type of property and whether the defect affects common or private property:
- Houses and townhouses: The original builder is responsible for defects in the property.
- Common property in apartment buildings: The Owners Corporation is responsible for coordinating repairs, and can pursue the original builder where the defect falls within the statutory liability period.
- Private lots within apartment buildings: Individual lot owners are generally responsible for defects within their own lot, though they may still have a claim against the original builder.
Reach out to us at Bugden Allen if you’re unsure which category your property falls under, or if disputes arise within the Owners Corporation.
We have extensive experience working alongside Owners Corporations on building defect matters, and can guide you towards an equitable resolution.
What Should You Do When Defective Building Works are Identified?
When defective building work is identified, an Owners Corporation and/or lot owners should act promptly to understand the nature and extent of the problem and protect its legal position.
The first step is to document the defect carefully. This may include photographs, a detailed description of the issue, relevant plans and reports, and records of previous repairs or correspondence.
Depending on the nature of the defect, it may also be appropriate to obtain advice from a building consultant, engineer or other technical expert before rectification work is undertaken.
For Owners Corporations, there may be additional considerations.
It is important to determine whether the defect affects common property, a private lot or shared building infrastructure, as this can influence responsibility for rectification, the Owners Corporation’s obligations and who may be entitled to pursue a claim.
The builder or other relevant party should generally be notified of the alleged defects in writing and given an appropriate opportunity to respond.
Legal advice at this stage can assist with preserving evidence, coordinating experts, identifying potentially responsible parties and ensuring that any applicable limitation periods or procedural requirements are considered.
Where a dispute cannot be resolved directly, it may be necessary to engage with the Building and Plumbing Commission (BPC) or another applicable dispute resolution process before proceedings are commenced.
If the dispute remains unresolved, the matter may ultimately proceed to VCAT or another appropriate forum.
Obtaining legal advice early can help an Owners Corporation or lot owner understand the available options and develop an appropriate strategy for investigation, rectification and, where necessary, recovery.
When to Hire a Building Defect Lawyer?
Building defects may become apparent during or shortly after construction. In some cases, however, issues may not emerge until years later.
Persistent water ingress, recurring cracking, waterproofing failures or problems affecting common building services are often the first signs that further investigation is warranted.
When defects are identified, it is important to understand not only what has gone wrong, but who is responsible and what steps should be taken next.
An Owners Corporation may need to investigate and preserve evidence of defective work while also meeting its obligations to repair and maintain common property.
Obtaining legal advice early can help to:
- Determine whether the defect affects common property, a private lot or shared building infrastructure
- Understand responsibility for repair and rectification
- Identify the scope and location of defects
- Coordinate building consultants, engineers and other experts
- Preserve evidence while necessary repairs are undertaken
- Identify potentially responsible parties and available claims
- Assess applicable limitation periods
- Engage with builders, developers, consultants and insurers from an informed position.
Early legal advice doesn’t mean litigation is inevitable.
In many cases, it enables you to make informed decisions during the defect recovery process while continuing to meet your obligations to lot owners.
Contact Bugden Allen for personalised support and advice on your building defect matter.