expert witness report for builders nsw

Responding to Homeowner Expert Reports

Builders are often served with an expert report prepared on behalf of a homeowner. Some reports are well-prepared and balanced. Others may include assumptions, unsupported conclusions, incorrect standards, excessive rectification scopes or items that do not properly distinguish between defective work, incomplete work, maintenance and contractual disagreement.

Awesim can assist builders by reviewing a homeowner’s expert report and preparing an independent response.

This may involve considering:

• Whether the expert inspected the relevant areas
• Whether the defect has been properly identified
• Whether the correct standard or code has been applied
• Whether the alleged cause is supported by evidence
• Whether the recommended rectification method is reasonable
• Whether the claimed scope of rectification is excessive
• Whether the alleged defect may be caused by others
• Whether the item is a maintenance issue rather than a building defect
• Whether the alleged defect is within the builder’s contractual scope

This type of review is particularly important where the homeowner’s claim is large, the rectification scope is disputed, or the builder believes the allegations have been overstated.

Defective Work, Incomplete Work and Contractual Scope

A common issue in building disputes is the difference between defective work and incomplete work.

Defective work generally refers to work that has been carried out but does not meet the required standard, specification, code requirement or accepted level of workmanship. Incomplete work refers to work that has not been completed, or work that remains outstanding under the contract.

This distinction matters for builders because a homeowner may incorrectly describe unfinished contractual items as defects, or may claim rectification costs for work that was never part of the builder’s scope. Similarly, a builder may say an item is incomplete when it is actually defective work that requires rectification.

Awesim assists by assessing the nature of each item and explaining whether it appears to be defective, incomplete, outside the agreed scope, a variation item, maintenance-related, or requiring further evidence.

This can be especially useful after contract termination, site abandonment, payment disputes or disagreement about whether the builder was given a reasonable opportunity to rectify.

Practical Building Experience Matters

Builders need an expert who understands how construction sites actually operate. Building disputes often involve sequencing, access, weather, trade damage, variations, design changes, owner-supplied materials, incomplete documentation and workmanship tolerances.

Glen Sim’s 35+ years of building and construction experience allows Awesim to assess disputes with practical site knowledge. This is important when considering whether a defect was caused by poor workmanship, design documentation, movement, owner decisions, third-party trades, maintenance, product failure or normal construction tolerance.

A technically correct expert report must do more than list defects. It should consider causation, responsibility, compliance, practicality and reasonable rectification.

For example, a cracked tile may not automatically prove defective workmanship. It may relate to substrate movement, impact damage, inadequate movement joints, incorrect installation, poor adhesive coverage, structural movement or another cause. A water leak may not necessarily be caused by the builder’s waterproofing work. It may relate to plumbing, external drainage, maintenance, roof flashings, penetrations or later alterations.

Awesim’s role is to investigate the evidence and provide a reasoned opinion.

Waterproofing, Roofing and Building Envelope Disputes

Waterproofing and water ingress claims are among the most common and costly building disputes. Builders may face allegations involving leaking showers, failed bathrooms, balcony leaks, roof leaks, window leaks, ponding water, inadequate falls or defective drainage.

Awesim has specialist experience in forensic waterproofing investigation and building defect assessment. Glen Sim is qualified by the Master Builders Association in Waterproofing Compliance & Inspection and has extensive practical experience in waterproofing membrane application, building defects and rectification.

This is particularly valuable for builders where the alleged defect involves hidden work. A finished bathroom, balcony or tiled area may conceal waterproofing membranes, screeds, substrates, drainage details and penetrations. A proper expert assessment needs to consider how the system was built, where water may be tracking, whether the allegation is technically supported and whether the proposed rectification is reasonable.

Expert Reports for NCAT, Mediation and Settlement

Not every building dispute proceeds to a final hearing. In many cases, a properly prepared expert report helps the parties understand the real issues and move toward settlement.

Awesim’s reports can assist builders with:

• NCAT building disputes
• NSW Fair Trading matters
• Mediation
• Settlement negotiations
• Expert conclaves
• Scott Schedule responses
• Solicitor advice
• Rectification planning
• Response to homeowner expert reports
• Assessment of claimed defects and costs

A clear report can help a builder make informed decisions. It can identify where rectification may be appropriate, where the claim may be excessive, and where the builder may need further evidence or legal advice.