Forensic & Expert Engineering

Building Disputes.
Expert Engineering Evidence.

Expert engineering reports and forensic investigations for building disputes, NCAT proceedings, Building Commission NSW matters, insurance claims and legal proceedings.

Gavel and law books on structural plans beside scales of justice and a hard hat, representing expert engineering evidence in building disputes

Clear. Objective. Evidence-Based.

10+
Years Expert Witness Experience
NCAT
Code of Conduct Compliant
UCPR
NSW Court Admissible
AS 4349
Inspection Standard
FORENSIC.

When You Need This

When you need expert engineering support

If you are dealing with a building defect or a dispute with your builder, or the matter has not been satisfactorily resolved through your builder or insurer, you may need to take the next step through NCAT or other legal proceedings.

In these situations, independent, accurate and well-supported engineering evidence can help establish the technical facts, strengthen your case, and provide the professional support you need to pursue the best possible outcome.

Building Dispute

Conflicts with builders, contractors or owners regarding quality of work, costs or defects.

NCAT / Tribunal

Expert engineering reports for NCAT or other legal proceedings.

Insurance Claim

Assessment and technical reports to support or dispute insurance claims.

Defective Work

Assessment of poor workmanship or non-compliant work against the applicable standards.

NSW Building Commissioner

Engineering reports to support matters referred to or investigated by the NSW Building Commissioner.

Builder / Owner

Professional support for both property owners and builders.

Our Services

Our forensic & expert engineering services

Each report type has distinct procedural requirements, audiences and admissibility standards. We prepare each category specifically for its intended purpose — never a generic document repackaged for a different forum.

Expert Engineering Reports

NCAT Reports

Building Defect Investigation

Structural Damage Assessment

Insurance Claim Assessment

Causation Investigation

Remedial Recommendations

Expert Technical Opinion

Who We Assist

Who we assist

Property Owners

Lawyers

Strata & Owners Corporations

Builders

Insurers

Property Managers

Engineer in a hard hat and hi-vis vest examining a large structural crack in a brick house wall

What We Investigate

We investigate the full range of structural defects

Our investigations begin with a systematic site inspection under AS 4349.0 and AS 4349.1 — visual inspection of all accessible structural elements, measurement and photographic documentation of cracking, deformation and settlement, and assessment of the drainage, moisture and environmental conditions that may be driving the deterioration.

  • Cracking
  • Retaining walls
  • Movement & settlement
  • Structural failure
  • Foundation issues
  • Non-compliant work
  • Water ingress & leakages
  • Deterioration
  • Defective construction
  • Boundary & neighbour damage

Our Process

Our investigation process

A thorough, structured approach to uncover the facts and deliver clear, reliable engineering findings.

01

Initial Review

We review your documents and understand the issues in dispute.

02

Inspection

We inspect the property and gather the physical evidence.

03

Analysis

We analyse the data and identify the causes.

04

Report

We prepare a clear, comprehensive report.

05

Support

We provide ongoing technical support as required.

What You Receive

What you receive

Every forensic engagement produces a single, self-contained document that a tribunal, court, insurer or opposing expert can work from without needing to ask you for anything further.

A written expert report

Findings, methodology, and professional opinions set out in plain English — structured for the forum the report is prepared for.

Photographic evidence

Dated, annotated photographs and measurements documenting every defect and damage location we observed on site.

Causation analysis

A reasoned technical explanation of the probable cause or mechanism of failure, referenced to the applicable Australian Standards.

Remedial recommendations

The rectification works required, with urgent safety items separated from programmatic maintenance.

Code of conduct declaration

Where the report is for NCAT or a court, a declaration of compliance with the applicable expert witness code of conduct.

Post-issue support

Availability for solicitor queries, expert conclaves, joint expert reports, and oral evidence at hearing.

NCAT & Legal Disputes

NCAT & legal proceedings

We provide independent engineering evidence for building disputes, NCAT proceedings and legal matters. Our reports are clear, objective, and prepared to assist the Tribunal or Court.

The NSW Civil & Administrative Tribunal hears a significant volume of residential building disputes, including defect claims under the Home Building Act 1989. Expert witnesses appearing before NCAT are required to comply with NCAT's Expert Witness Code of Conduct, which imposes duties of independence, impartiality and disclosure that ordinary engineering reports do not address. Our reports include a declaration of compliance with the Code, identify the factual basis for our opinions, disclose the assumptions underlying our analysis, and draw a clear line between matters of fact and matters of professional opinion.

For District Court and Supreme Court matters, reports are prepared in accordance with the NSW Uniform Civil Procedure Rules 2005, including Schedule 7. We are available to attend court as expert witnesses, participate in joint expert conclaves, and prepare joint expert reports following conferral with opposing experts — a process increasingly required by NSW courts prior to hearing.

“An expert witness owes their duty to the tribunal — not to the party who retained them. That independence is not a constraint. It is the foundation of everything the report is worth.”

IA Engineering Forensic Team
Discuss Your Case

Insurance Claims

Insurance claim assessment & reporting

We prepare structural engineering reports to support or contest insurance claims arising from damage events — storm, hail, flood, fire, subsidence, vehicle impact, and construction-related incidents. Our reports document the physical evidence observed on site, assess the structural significance of the damage, identify the probable cause or mechanism of failure, and specify the rectification works required to restore the structure to its pre-event condition.

Reports are formatted to meet the requirements of insurers and loss adjusters, with clear findings, photographic evidence, material assessments and itemised rectification recommendations. Where causation is contested, we provide a detailed technical analysis setting out our reasoning and referencing the relevant Australian Standards and inspection methodologies under AS 4349.0 and AS 4349.1.

Discuss Your Claim

Experience & Projects

Experience across contested matters

Our forensic team has prepared expert evidence across residential, strata, commercial and industrial matters throughout NSW — from single-dwelling defect claims to multi-unit structural failures.

Engineer assessing structural damage to a residential building

Residential Defects

Home Building Act defect claims

Multi-defect NCAT matters covering cracking, footing movement, water ingress and non-compliant construction — with rectification cost assessments and responses to opposing expert reports.

Failed retaining wall undergoing remedial engineering assessment

Retaining Wall Failure

Boundary & neighbour disputes

Structural impact assessments for encroachments, retaining wall failures, and damage attributable to adjacent construction or excavation works.

Commercial precast panel building and site works under engineering assessment

Commercial & Industrial

Structural failure investigations

Causation analysis for commercial and industrial structures, including insurer-instructed investigations where the cause, extent or repair methodology is contested.

View our projects

Why Choose Us

Why choose IA Engineering

Specialist Expertise

We focus on forensic and expert engineering.

Independent & Objective

Impartial reports you can rely on.

Practical Experience

Real-world construction knowledge.

Clear Communication

Reports written in plain English.

Trusted by Professionals

Lawyers, insurers, builders and owners trust us.

Standards & Compliance

Every forensic report prepared to the applicable code of conduct and standards

Our forensic and expert witness reports are prepared by Registered Professional Engineers holding current professional indemnity insurance, in accordance with the procedural requirements of the forum in which the report will be used. We do not issue generic inspection certificates — every engagement begins with a clear understanding of the proceedings, the applicable code of conduct, and the specific technical questions the report must address.

NCAT Expert Witness Code of ConductNSW UCPR Schedule 7AS 4349.0 Inspection of BuildingsAS 4349.1 Pre-Purchase InspectionsHome Building Act 1989 (NSW)Professional Indemnity Insured

FAQ

Frequently asked questions

Expert engineering support for building disputes, NCAT matters and Building Commission NSW.

Do I need an engineer's report before applying to NCAT?

Not in every case. However, if your dispute involves cracking, settlement, structural defects, defective workmanship, non-compliant work or other technical building issues, an independent engineering report can provide important evidence to support your case. It can document the defects, investigate their likely causes and clearly explain the technical issues in dispute.

What should an expert engineering report for a building dispute include?

A professional expert engineering report should clearly identify the issues in dispute, document the observed defects, assess the available evidence, investigate likely causes and provide independent engineering opinions supported by technical reasoning. Depending on the matter, it may also assess relevant drawings, specifications, Australian Standards and applicable building requirements, and provide recommendations for rectification where appropriate.

Can you review another engineer's or builder's report?

Yes. We can independently review technical reports prepared by another engineer, builder, consultant or other party. We assess the technical basis, assumptions, available evidence, calculations and conclusions, and identify any matters that may require further investigation or a different engineering interpretation.

Do you need to inspect the property before preparing a report?

In many building defect matters, a site inspection is an important part of the engineering assessment because it allows the engineer to observe and document the actual condition, nature and extent of the defects. However, the need and scope of an inspection will depend on the circumstances of the matter and the information already available.

What documents should I provide to get started?

Any documents that help establish the history and technical circumstances of the matter can be useful. These may include contracts, architectural and structural drawings, previous reports, photographs and videos, correspondence with the builder, scopes of work, inspection reports, and documents from Building Commission NSW or NCAT. We will advise you if additional information is required after our initial review.

Can an engineering report help if I have already tried to resolve the issue with my builder?

Yes. Where discussions or correspondence with the builder have not resolved the matter, an independent engineering assessment can help clarify the technical facts. Rather than relying solely on the competing claims of the parties, the defects and their likely causes can be investigated and documented using engineering evidence and professional analysis.

Do you prepare engineering reports for Building Commission NSW matters?

Yes. Where a Building Commission NSW matter involves technical or engineering issues, we can investigate the building conditions and alleged defects and prepare appropriate technical documentation. The scope and level of reporting will depend on the nature of the dispute and the stage the matter has reached.

Can you determine whether a building defect was caused by defective workmanship or something else?

One of the key purposes of an engineering investigation is to identify or narrow down the likely cause of a defect. We can assess the available evidence, building conditions, construction methods and other relevant factors to determine whether an issue may be associated with workmanship, design, ground movement, water ingress, deterioration, maintenance or other causes. Our conclusions are based on the available evidence and engineering assessment.

Can your report assess whether the builder's work complies with relevant standards and requirements?

Where relevant to the matter, the completed work can be assessed against applicable drawings, specifications, contractual requirements, Australian Standards and other relevant technical or building requirements. Any opinion regarding non-compliance will be based on the requirements applicable to the particular work and the available evidence.

Do you only work for property owners, or can builders and contractors engage you as well?

Our services are not limited to one side of a dispute. Property owners, builders, contractors, legal professionals and other relevant parties may engage us for specialist engineering advice. Regardless of who appoints us, our engineering opinions remain independent, objective and based on the technical evidence.

Can you also determine the cost of repairing the defects?

Where required and within the agreed scope, the engineering assessment can first identify the defects and the appropriate remedial requirements. A scope of remedial works can then be developed, with cost estimation or other related services considered separately where appropriate. Establishing the technical cause and suitable rectification method should generally come before determining the repair cost.

How long does it take to prepare an expert engineering report?

The timeframe depends on the complexity of the matter, number and nature of the defects, volume of documentation, need for a site inspection and level of technical investigation required. Once we have reviewed the initial information and understood the required scope, we can provide an estimated timeframe for completing the assessment and report.

Can you continue supporting my matter after the report has been issued?

Yes. Our involvement does not necessarily end when the report is issued. Depending on the matter, we can provide further engineering support in relation to technical questions, new evidence, additional documentation, responses to technical issues raised by another party and other engineering matters that may arise as the dispute progresses.

How do I know whether my matter actually requires an expert engineering report?

You do not need to determine this before contacting us. You can provide an overview of the building issue together with the documents and information currently available. Following an initial review, we can advise whether the matter is more appropriately addressed through an Expert Engineering Report, Site Inspection, Technical Assessment or another form of engineering service, and what level of investigation may be appropriate for your circumstances.

Have a building dispute or need an expert report?

Talk to our engineering team today. From insurance claim investigations to NCAT expert reports and Supreme Court litigation support, we deliver independent, court-admissible structural engineering evidence for NSW proceedings.

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