Can you provide an obligation-free quotation before starting?

Yes. We offer an obligation-free quotation for your building dispute or Expert Witness Report. This helps you understand the likely scope, timeline, and costs involved before proceeding.

How much does an Expert Witness Report cost?

We offer a free initial consultation. The cost varies depending on the number and complexity of issues involved. As a guide: Site Investigation is $1,100 for the first hour, then $550 per hour thereafter; Expert Witness Reporting is $1,100 per issue; Scott Schedule Reporting is $550 per issue; Expert Witness Conclave is $3,850 per day or part thereof; Court or NCAT Hearing Attendance is $3,850 per day or part thereof. Document/report review and travel expenses may also apply. All rates include GST and are indicative only.

What is the minimum cost of a small claim?

For a small claim involving one hour of site investigation, one Expert Witness Report, and one Scott Schedule, the minimum cost is approximately $2,750.00 (inclusive of GST).

What is the typical price range for an Expert Witness Report?

Most Expert Witness Reports fall within the $5,000–$15,000 range, depending on the scale and complexity of the matter. For larger claims, such as multi-unit or strata complex disputes, total reporting costs can exceed $600,000 in major cases worth $10 million or more.

How long does it take to receive the report?

On most occasions, an Expert Witness Report takes around 2–4 weeks from the date of the site investigation to prepare and submit. Complex matters may take several months to compile sufficient supporting evidence.

When are site investigations conducted?

All site investigations are generally carried out between 7:00am and 9:00am on weekdays, unless prior arrangements have been made.

Do you require payment upfront?

Yes. It is company policy that all payments are made prior to both the Site Investigation and the commencement of the Expert Witness Report. This ensures the independence and objectivity of our opinions.

Where do you provide Expert Witness services?

We service all of New South Wales, including Sydney, regional cities, and country towns, including the Central Coast, Hunter Valley, Mid North Coast, New England, Northern Rivers, Central West, South Coast, and Riverina/Murray regions, as well as Broken Hill and other remote locations.

Why choose Awesim Pty Ltd for your Expert Witness Report?

With more than 35 years in the building and construction industry and the business established in 1996, Awesim brings extensive experience and credibility. Director Glen Sim is a qualified builder and accredited consultant with a trade background in Carpentry/Joinery and a Diploma in Construction Management. Awesim is fully insured with Professional Indemnity cover and recognised by NCAT and the courts for compliance with the Expert Witness Code of Conduct.

What is a Scott Schedule and why is it needed?

A Scott Schedule is a structured report outlining the specific issues in dispute — for example, defects, costs of rectification, or variations. It's often required by NCAT or the Court to help clearly compare both parties' expert opinions side by side.

What is included in the Bundle of Documents?

The Bundle of Documents is the complete evidence pack submitted to NCAT or the Court. It includes the Expert Witness Report and Scott Schedule, Building Contract and Plans, Affidavit and Statement of Claim, Chronology of Events, and supporting evidence and correspondence, tabulated, paginated, indexed, and provided in triplicate.

What qualifications do your Expert Witnesses hold?

Our Expert Witnesses come from trade and management backgrounds in the Building & Construction industry. Director Glen Sim is a qualified Carpenter/Joiner with a Diploma in Construction Management, a NSW Builder's Licence, and accreditation as a Building Consultant.

Are your Expert Witness Reports accepted by NCAT and the Courts?

Yes. All of our Expert Witness Reports strictly adhere to the Code of Conduct for Expert Witnesses and are fully recognised by NCAT and the NSW Court system.

Can you assist with both residential and commercial building disputes?

Yes. We handle both residential and commercial building disputes across New South Wales, tailoring the report to suit the nature and scale of the claim.

Do you work for both homeowners and builders?

Yes. We remain fully independent and are engaged by both homeowners and builders, as well as legal representatives or insurers. Our findings are impartial and evidence-based.

What happens after the Expert Witness Report is completed?

After your report is submitted, we can assist in conferencing with the opposing expert (Expert Conclave), attending Court or NCAT hearings, providing clarifications or supplementary reports, and preparing your Bundle of Documents for submission.

Do you charge for travel outside Sydney?

Yes, travel expenses may apply for site inspections outside Sydney or the metropolitan area. We always provide an upfront estimate of any travel-related costs in your quotation.

What type of evidence do you need before starting a report?

Typically, we'll ask for copies of your building contract, plans, correspondence, defect lists, and any photographic or inspection evidence you already have.

Can I use your report for insurance or warranty claims?

Yes. Many clients use our Expert Witness Reports for Home Building Compensation Fund (HBCF) claims, insurance disputes, or warranty issues. Our reports are designed to be compliant and admissible for these types of proceedings.

How do I get started with booking a Site Investigation?

You can contact us via phone, email, or the online form for an obligation-free quote. Once you accept the quote and payment is confirmed, we'll schedule a site investigation, typically between 7:00am and 7:00pm on weekdays.

Who is Awesim and how long have you been operating?

Awesim Pty Ltd is a privately owned Australian building consultancy, established in 1996. It was founded by Glen Sim, who brings over 35 years of experience across the building and construction industries and more than 15 years providing litigation support to homeowners, builders, and lawyers.

We provide independent building consultancy and litigation support, specialising in expert witness reports and Scott Schedules for building disputes before NCAT and the NSW courts.

What kinds of building matters do you specialise in?

We focus on building disputes and defects, including waterproofing failures, structural defects, incomplete and defective building works, and construction litigation, covering expert witness reports, Scott Schedules, and quantum meruit assessments.

What areas do you cover?

We provide services throughout New South Wales, including regional and remote locations. Our offices are located in Sydney CBD, Tamworth and Tweed Heads, and we travel across New South Wales for inspections and investigations.

Who do you work with?

We assist homeowners, solicitors and legal representatives, builders and contractors, developers, property owners, owners corporations, and parties involved in insurance-related building matters.

What services do you offer?

Our services include expert witness reports, Scott Schedules, and quantum meruit reports for litigation support, alongside client-side project management, contracts administration, and construction scheduling.

Why should I choose Awesim over another building consultant?

We provide independent, objective reporting backed by more than 35 years of practical building and construction experience, coupled with over 15 years of litigation support. Our reports are tribunal-ready, supported by detailed photographic and compliance evidence, and grounded in strong knowledge of the National Construction Code and Australian Standards.

What building problems can you help me with?

We help with building defects, disputes over incomplete or defective work, waterproofing and structural issues, and disagreements that require independent expert evidence to resolve — particularly matters heading to or already before NCAT.

What outcome can I expect from working with you?

You can expect a clear understanding of your position, reliable independent expert evidence prepared for NCAT or court, and professional support aimed at resolving your dispute and protecting your interests.

How much does an Expert Witness Report cost for an NCAT building dispute in NSW?

An NCAT Expert Witness Report in NSW typically costs between $5,000 and $15,000, with a small single-issue claim starting at a minimum of about $2,750 incl. GST. Awesim publishes fixed, itemised rates: site investigation is $1,100 for the first hour then $550/hour, Expert Witness reporting is $1,100 per issue, and a Scott Schedule is $550 per issue. Conclave or NCAT/court hearing attendance is $3,850 per day. Large strata or multi-unit matters can exceed $600,000 on claims worth $10 million or more. All rates include GST and are confirmed in an obligation-free written quote before any work begins. Reports are usually delivered within 2–4 weeks of the site inspection.

Do I need an Expert Witness Report for NCAT, or is a building inspection enough?

If your building dispute is going to NCAT or court, you need a formal Expert Witness Report — a standard pre-purchase building inspection is not accepted by the Tribunal. An Expert Witness Report is prepared under the Expert Witness Code of Conduct, assesses each defect against the National Construction Code, Australian Standards and the Home Building Act, and states cause, responsibility, rectification method and cost for every issue. Awesim prepares these reports, with an accompanying Scott Schedule where multiple defects are involved, for homeowners, builders and solicitors across NSW.

How much does a forensic waterproofing investigation cost for an NCAT dispute in NSW?

A forensic waterproofing investigation is priced the same way as Awesim's other expert witness work: site investigation is $1,100 for the first hour and $550 per hour thereafter, with additional reporting cost thereafter. Waterproofing matters often involve more diagnostic time, using thermal imaging, moisture meters, dye testing and level checks for falls. Glen Sim holds a Master Builders Association qualification in Waterproofing Compliance & Inspection, assessing each defect against AS 3740 or AS 4654.2 depending on the work. All rates are GST-inclusive and confirmed in an upfront written quote.

My bathroom or balcony is leaking — how do I know if it's actually a waterproofing defect?

Not every leak is caused by a failed membrane. A wet skirting board, water-stained ceiling or damp wall can also be caused by a leaking pipe, blocked drainage, rising damp, poor external ground levels or water tracking from an unrelated part of the building — a forensic investigation is needed to tell the difference before any claim is made. Awesim uses thermal imaging cameras, pin and pinless moisture meters, digital levels and controlled dye testing to trace the actual water pathway rather than assuming the nearest visible symptom is the cause.

Quantum Expert Witness

Quantum Expert Witness in Sydney for Construction Claims and Disputes

September 9, 2026By Awesim

Construction disputes can become complex when disagreements arise over the value of completed work, variations, payments, delays or contractual obligations. In these circumstances, reliable evidence is essential for establishing what occurred and determining the financial implications of a claim. A quantum expert witness in Sydney can assist by examining project records, contractual documents and financial information to provide an independent assessment of the amounts in dispute.

A quantum expert witness considers the financial and valuation aspects of a construction dispute and assesses whether the amounts claimed are supported by the available evidence. This may involve reviewing contracts, variations, invoices, progress claims, payment records, correspondence and other project documentation. When the evidence is organised and properly analysed, complex financial issues can be presented in a clear and understandable manner.

What Is a Quantum Expert Witness?

A quantum expert witness is a professional who examines the financial aspects of a dispute and provides an independent opinion based on specialised knowledge, professional experience and relevant evidence. In construction matters, this can include assessing the value of completed works, reviewing variations, examining disputed payments and analysing financial consequences arising from contractual issues.

The role of a quantum expert witness involves more than checking invoices or adding figures together. An expert needs to understand the contractual arrangements, project documentation and available evidence before reaching a conclusion. The assessment should explain the methodology used and demonstrate how the relevant figures have been calculated.

For example, if a contractor submits a claim for additional work, the evidence may include the original scope, variation instructions, correspondence, invoices, timesheets and records showing the work was undertaken. A quantum expert witness can review this information and assess the financial value of the claim in a structured and objective manner.

Understanding Quantum Meruit

Understanding the quantum meruit meaning is important when dealing with certain construction payment disputes. In simple terms, quantum meruit refers to an assessment of the reasonable value of work or services provided in circumstances where payment is disputed, or the contractual basis for payment may be uncertain.

For those looking to understand what quantum meruit means, the concept generally concerns determining a reasonable amount for work or services provided, subject to the applicable contractual and legal circumstances. The precise application depends on the facts of each matter, the contractual relationship and the relevant law.

When considering a quantum meruit claim, it is important to examine the surrounding contractual documents, project records and financial evidence rather than relying on terminology alone.

A quantum expert witness can assist with the financial assessment associated with a claim by reviewing the available evidence and explaining how the relevant amounts have been determined. The expert does not decide the legal entitlement of a party. Instead, the expert provides an independent professional opinion on matters within their area of expertise.

The Role of Evidence in Construction Claims

Strong evidence is one of the foundations of a construction claim. A contract may establish the original obligations, but additional evidence is often needed to demonstrate how the project progressed and why a particular amount is being claimed.

Relevant evidence can include contracts, specifications, variation documents, invoices, progress claims, payment schedules, timesheets, correspondence, photographs, site records, valuation documents and financial records. Each piece of evidence can help establish the circumstances surrounding a claim and support the calculations presented.

A quantum expert witness reviews this evidence systematically. If a contractor claims additional payment for variations, for instance, the expert may compare the original contract scope with variation instructions, supporting invoices and records of the work completed. The available evidence can then be considered when assessing whether the claimed amount is properly supported.

The quality of the evidence is equally important. Incomplete records, inconsistent figures or unsupported assumptions can make a claim more difficult to assess. Well-maintained project records, on the other hand, provide a stronger foundation for a professional assessment.

A construction claims expert can review the available evidence as a complete record rather than considering individual documents in isolation. This approach can help identify inconsistencies, clarify calculations and establish how different project events may have affected the amounts claimed.

Construction Expert Witnesses and Quantum Assessment

Construction disputes can require different areas of specialist knowledge. An expert witness construction professional may provide an opinion on technical construction matters, while a building expert witness may assess issues relating to building work, defects or construction practices. A construction expert witness may also consider technical aspects that help explain the circumstances behind a financial claim.

A quantum expert witness, by comparison, concentrates primarily on the financial and valuation aspects of the dispute. However, an understanding of construction processes can be highly relevant because financial claims are often connected to the work actually performed and the way the project was administered.

Experience in expert witness building construction can help an expert interpret project documentation and understand the relationship between construction activities and financial records. At Awesim Building Consultants, this experience supports a detailed approach to reviewing progress claims, variations and completion records, which can provide important evidence when determining the value of work.

Professional construction expert witness services may therefore involve collaboration between technical and quantum specialists where a matter contains both construction and financial issues. The objective is to ensure that the relevant evidence is properly considered and that opinions remain within the expert’s area of expertise.

NSW Evidence Act and Expert Evidence

The NSW Evidence Act 1995 provides a legislative framework governing evidence in New South Wales, including rules concerning opinion evidence and expert opinion. In general terms, expert evidence needs to be based on specialised knowledge derived from training, study or experience and must satisfy the applicable legal requirements.

For construction disputes, this makes the quality and basis of expert evidence particularly important. A quantum expert witness should identify the information considered, explain the methodology used and provide reasoning for the conclusions reached.

An expert report should distinguish between factual evidence, assumptions and professional opinion. Relevant documents should be considered objectively, and any limitations in the available evidence should be clearly identified. This approach helps ensure that the assessment is transparent and allows the reader to understand how the conclusions were reached.

The admissibility and weight of particular evidence are matters for the relevant court or tribunal. Parties involved in a dispute should obtain appropriate legal advice regarding how the NSW Evidence Act applies to their individual circumstances.

When a Quantum Expert Witness May Be Required

A quantum expert witness may be engaged when a construction dispute involves significant financial or valuation issues. These can include disputed variations, unpaid work, disagreements about valuations, payment disputes and financial impacts associated with changes to the scope or delivery of a project.

A quantum meruit claim may also require detailed consideration of the value of work performed and the supporting evidence. Where parties have different views about the amount payable, an independent assessment can help identify the basis of the competing calculations.

A quantum expert witness can review the relevant evidence, compare the figures presented by the parties and explain the methodology used to arrive at an assessment. This can be particularly valuable when a dispute involves a large volume of project documentation or several separate components of a financial claim.

Preparing Evidence for a Quantum Assessment

The quality of a quantum assessment depends on the quality and completeness of the available evidence. Providing the expert with relevant project documentation can help establish a clear understanding of the contractual arrangements, work performed and financial issues in dispute.

Important evidence may include the construction contract, amendments, drawings, specifications, variations, invoices, payment records, progress claims, correspondence, timesheets, project accounts and records of completed work. Where appropriate, photographs and site documentation may also provide useful evidence.

Organised records allow a quantum expert witness to trace claimed amounts back to supporting documentation. This can make it easier to identify discrepancies between claimed figures and contemporaneous project records. Where evidence is missing or incomplete, those limitations can also be identified as part of the assessment.

Consistent financial and project documentation can provide a more reliable basis for analysis. By reviewing the available evidence in context, the expert can develop calculations that are transparent, explainable and relevant to the issues in dispute.

The Value of Independent Expert Evidence

Independence, objectivity and a clear methodology are important qualities in expert evidence. A quantum expert witness should assess the available information professionally and reach conclusions based on specialised knowledge and the supporting evidence, rather than advocating for either party.

Professional construction expert witness services can be particularly useful when a dispute involves complex financial calculations, extensive project records or competing valuations. A properly prepared expert report can bring together contractual information, financial records and other evidence in a structured format.

For construction disputes in Sydney and across NSW, independent expert assessment can help clarify the financial issues that may otherwise be difficult to understand. A quantum expert witness can explain the basis of calculations, identify relevant supporting evidence and present professional conclusions in a clear and logical manner.

Conclusion

Construction disputes often involve extensive documentation, competing claims and complex financial calculations. Reliable evidence provides the foundation for understanding what occurred, how work was valued and whether the amounts being claimed can be supported.

A quantum expert witness in Sydney can provide independent professional analysis of the financial aspects of construction disputes, including variations, payment disagreements, valuation issues and quantum meruit matters. By carefully reviewing contracts, financial records and project documentation, a quantum expert witness can help present the relevant evidence and calculations in a clear and structured manner. Awesim Building Consultants provides professional construction and quantum assessment services for matters requiring detailed review of project and financial information.

Awesim

Glen Sim is a highly experienced Building Consultant, Licensed Builder, Construction Consultant, and Expert Witness with more than 35 years of practical experience within the Australian building and construction industry. As the Founder and Director of Awesim Building Consultants, Glen has established a strong reputation throughout Sydney and regional New South Wales for providing independent, evidence-based building consultancy services and expert reporting for complex building and construction disputes.Beginning his career as an apprentice carpenter with TAFE NSW in 1990, Glen completed his apprenticeship in 1993 before progressing into senior construction and management roles across residential, commercial, and remedial building sectors. His extensive industry background provides him with genuine hands-on construction knowledge — something that distinguishes him from many consultants who have limited site-based experience.Glen became a Licensed Builder in Victoria in 2004 before returning to New South Wales in 2011, where he continues to operate under NSW Builder Licence No. 232673C. Over the course of his career, he has worked across all stages of the construction process, including carpentry, supervision, project management, contract administration, construction scheduling, defect rectification, quality control, and dispute resolution.Today, Glen is widely recognised for his expertise in:Expert Witness Reports Scott Schedules NCAT Building Disputes Construction Defect Investigations Building Defect Reports Quantum Meruit Assessments Construction Programming & Delay Analysis Client-Side Project Management Contract & Scope of Works AssessmentsGlen regularly assists homeowners, builders, developers, solicitors, strata managers, insurers, and commercial clients by providing technically detailed and independent reporting for litigation and dispute resolution matters. His reports are prepared with a strong understanding of the requirements of the NSW Civil and Administrative Tribunal (NCAT), court procedures, the Expert Witness Code of Conduct, the National Construction Code (NCC), Australian Standards, and accepted building industry practices. Over 15+ years experience providing litigation support with expert witness reports and Scott schedules. What clients value most about Glen is his practical approach, integrity, attention to detail, and ability to clearly explain complex construction issues in a manner that is easy to understand. His combination of trade-based experience, construction management knowledge, and investigative expertise allows him to identify issues that are often overlooked by less experienced consultants.Over the years, Glen has developed a reputation for producing thorough, methodical, and evidence-supported reports that clients and legal representatives can rely upon during negotiations, mediations, tribunal proceedings, and litigation matters. His commitment to accuracy, professionalism, and impartiality has made Awesim Building Consultants a trusted name in the building consultancy industry across NSW.Glen is also known for his strong commitment to client service, ensuring every matter is approached with professionalism, transparency, and genuine care for achieving practical outcomes. His experience across both metropolitan Sydney and regional New South Wales provides him with a broad understanding of differing construction methods, site conditions, workmanship standards, and project delivery challenges throughout the state.Outside of the construction industry, Glen values family life and regional Australia. He has been happily married to internationally recognised author Audra Starkey since March 2025. Together, they share a passion for supporting rural communities and building trusted professional relationships grounded in honesty and respect.With more than three decades of industry experience, Glen Sim continues to provide trusted building consultancy and expert witness services backed by real construction knowledge, independent assessment, and a commitment to helping clients navigate complex building matters with confidence.

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