In Australia, an Owner Builder Defect Report (Section 137B Report) may be required in the following situations:

• PRE-SALE OF A PROPERTY: If you are an owner builder looking to sell a property you have constructed or renovated, some states or territories may require you to obtain an owner builder defect report before selling. This report assesses the quality of the construction work and identifies any defects or issues that need to be rectified before the sale.

• INSURANCE OR WARRANTY CLAIMS: When making an insurance or warranty claim for construction defects, some insurance providers or warranty issuers may require an owner builder defect report as part of the claims process. This report helps in assessing the extent of the defects and determining the necessary repairs or remediation.

• DISPUTE RESOLUTION: In the event of a dispute between the owner builder and another party, such as a contractor, subcontractor, or homeowner, an owner builder defect report can serve as an objective assessment of the construction work. It helps in identifying any defects or deficiencies that may be the subject of the dispute and provides a basis for resolution.

• COMPLIANCE WITH REGULATORY REQUIREMENTS: Depending on the state or territory, there may be specific regulatory requirements that mandate the submission of an owner builder defect report. These requirements vary, so it is important to consult the relevant building authority or regulatory body in your jurisdiction to determine if such a report is necessary.

It's worth noting that the specific rules and regulations surrounding owner builder defect reports can differ between states and territories in Australia. Therefore, it is crucial to consult with local building authorities, regulatory bodies, or legal professionals in your specific area to understand the precise requirements that apply to your situation.