Expert witness disability access consultant (NSW): Makita-standard reports for NCAT and court
When an access issue is in dispute, or proceedings are reasonably anticipated, solicitors and insurers need independent opinion evidence. They do not need another design-advice memo. A compliance consultant helps the project meet the Premises Standards, the NCC access provisions and referenced Australian Standards. An expert witness owes a paramount duty to the tribunal or court. The report has to be testable.
This page is the service page: when the expert role is needed, how it differs from a DA or CC lodgement report, what Makita-standard looks like for access work, and how to instruct GJ Finn & DW Wong trading as Sydney Access Consultants. It is general information about expert services. It is not legal advice. Instructing solicitors remain responsible for procedure and strategy.
Expert witness vs compliance consultant
What a compliance consultant does
A compliance engagement is project-facing. Typical work is plan review for a Development Application or Construction Certificate, an access audit of an existing building, advice on Deemed-to-Satisfy gaps, input to a Performance Solution, or construction-stage coordination. The reader of that report is usually a council planner, a registered certifier, an architect or a builder. The product is a lodgement or design document. Start with disability access reports for DA, CC and CDC if that is the job. Related project pages are Performance Solutions and what certifiers want in an access report.
What an expert witness does
An expert witness is retained when a dispute, claim or proceeding needs independent specialist opinion on the accessible built environment. The duty is to the tribunal or court, not to the party paying the fee. The report must set out instructions, facts and assumptions, methodology and reasoned conclusions so another competent reader, and opposing parties, can test the opinion. It is not advocacy. It is not a redesign workshop dressed as evidence.
Why the roles are not interchangeable
The same practice may be capable of both roles over a career. The engagements are still different. Prior project advice, unpaid “have a look” comments, or a DA report written to get consent can all raise independence and weight questions if the same author later appears as an independent expert on the same facts. Separate appointments are often the safer discussion with legal advisers: one adviser on remedial options, an independently appointed expert for opinion evidence. That is good practice to raise with counsel. It is not a rule invented by this firm. A longer role distinction sits in the journal: expert witness versus compliance consultant.
When NCAT, courts and insurers need Makita-standard access evidence
Typical triggers, in plain language:
- a disability access complaint or DDA-related claim where the building or works will be examined
- a design, defect or contractual dispute that includes access contentions
- disagreement about equitable access after completed works
- an existing access report that will be tested as evidence rather than as a lodgement attachment
- an insurer asking for an independent opinion before or during a claim
Forums can include NCAT, NSW courts, Land and Environment Court access contentions, and insurer-instructed assessments. That list is not a claim that the practice appears in every forum. Material date matters. The NCC edition, Premises Standards version and referenced Australian Standards that applied when the work was designed or built may differ from current practice. NSW is on NCC 2022 Amendment 2 until NCC 2025 adoption on 1 May 2027. The Premises Standards, as amended, reference AS 1428.1:2021 from 29 July 2025. An expert report should say which instruments it applies, and why.
What Makita v Sprowles means for an access report
Makita (Australia) Pty Ltd v Sprowles [2001] NSWCA 305 remains the practical benchmark in New South Wales. In plain terms, Heydon JA’s framework asks the expert to:
- identify the specialised field
- show the expertise that qualifies them to speak in that field
- base each opinion on that specialised knowledge
- separate observed facts from assumed facts
- give those facts a proper foundation
- show the intellectual process, step by step, from facts to opinion
A bare statement that a doorway or ramp is “non-compliant with AS 1428” carries little weight if the report does not record measurements, the drawing or site source, the clause pathway, and the reasoning. That is not a strike-out statistic. It is the difference between an assertion and an opinion that can be tested.
NCAT Procedural Direction 3 (expert evidence) and the Expert Witness Code of Conduct (including UCPR Schedule 7 in court matters) reinforce the same discipline: acknowledge the code, state qualifications, set out instructions, list facts and assumptions, give reasons, identify standards and literature, record inspections and tests, and declare the duty to the tribunal or court. That is a high-level map. It is not a substitute for counsel’s procedural advice. Read the official NCAT direction. For a longer model-structure discussion, see the journal piece expert evidence in access consulting and Makita v Sprowles.
Section 79 of the Evidence Act 1995 (NSW) is the specialised-knowledge gateway. This page does not advise on admissibility. Instructing solicitors decide that.
What this expert witness service covers
Scope of specialised knowledge
The field is the accessible built environment: the Disability (Access to Premises - Buildings) Standards 2010, NCC access provisions in force at the material date, the AS 1428 suite and related standards as they apply to the instructions, and the architectural and construction literacy needed to read drawings and site conditions. SDA, housing and public-building work is included only where it sits inside the instructions and the author’s expertise. Reports are prepared by the Hurstville practice. Mid North Coast inspections can involve Sandy Grey at Black Beach where capacity allows. Western Australian instructions are taken against the code in force in that State, without assuming NSW planning overlays.
Typical deliverables
- review of the letter of instruction and a conflict / independence check
- site inspection, measurement and photographic record where the questions require it
- an independent expert report structured for scrutiny: instructions, qualifications, duty, facts, assumptions, methodology, standards, reasoned opinions, limitations
- availability for expert conclave, joint reporting or hearing as instructed
Availability is a capability, not a promise of a result.
What this engagement does not include
- legal advice or legal strategy
- advocacy briefs dressed as independent evidence
- any guarantee of a tribunal or court outcome
- treating a prior project compliance report as expert evidence without a fresh independence analysis
How to instruct an access expert
Letter of instruction essentials
Send a letter that states the questions to be answered, the documents to be considered, site access arrangements, the material date and the instruments that may apply, any known prior involvement between this practice and any party, the procedural framework (for example NCAT Procedural Direction 3 or the applicable Expert Witness Code of Conduct), and the timetable set by counsel. Preserve drawings, approvals, photographs, correspondence and variation records. Incomplete records limit certainty. The report should state those limitations rather than fill gaps with speculation.
Engagement pathway
Call (02) 9586 3111 and ask for an expert-witness engagement. Send the draft letter of instruction and the core bundle first. Independence and conflicts are checked before substantive work. A fee proposal is prepared against defined questions. Fees are not published on this page.
Work is based in Hurstville. Mid North Coast and Perth instructions proceed where the questions, site and capacity fit. See locations.
Boundary with compliance and lodgement reports
If you need a DA, CC or CDC access report for approval, use the lodgement guide. If the matter has become, or is about to become, independent evidence for a dispute, stay on this page. Certifier-facing report discipline is a different product: what certifiers want in an access report. Makita-ready wording on a CC report is not the same as an expert-witness retainer.
Frequently asked questions
What is the difference between an expert witness and a compliance consultant in access work?
A compliance consultant is engaged to help a project team design, assess or upgrade a building so it better meets applicable access requirements, for example reviewing drawings, auditing an existing site, or advising on NCC and Australian Standards pathways. An expert witness is engaged when a dispute, claim or tribunal or court proceeding needs independent specialist opinion evidence. Their primary duty is to the tribunal or court, not to the party paying the fee. The report must set out instructions, facts and assumptions, methodology and reasoned conclusions so another competent reader can test the opinion. The engagements are not interchangeable. Mixing project advocacy with later “independent” evidence can raise independence and weight problems that instructing solicitors need to manage.
When do NCAT or the courts need a Makita-standard access report?
When access compliance, design adequacy or equitable access is a live issue in proceedings, or proceedings are reasonably anticipated, decision-makers typically need opinion evidence from a witness with specialised knowledge in the accessible built environment, not a bare assertion that something is “non-compliant.” In New South Wales, Makita v Sprowles remains the practical benchmark. A routine DA or CC access report prepared only for lodgement is usually not enough on its own if the document will be relied on as expert evidence.
Can the same firm that advised on design later act as expert?
Independence and prior involvement must be disclosed and assessed. Separate appointments are often safer. Legal advisers decide. Do not assume a previous SAC compliance report can be re-badged as expert evidence.
Is a compliance access report enough for NCAT?
Usually not by itself. Expert evidence has different duties and a different structure. See also when an expert witness is needed in access disputes.
Do you provide legal advice?
No. Solicitors instruct. Experts opine within specialised knowledge. This page is not legal advice.
Related reading: Makita and expert evidence (journal), expert versus compliance, when you need an access expert witness, what an access consultant does, services.
Letters of instruction: (02) 9586 3111. This page is general information about expert services, not legal advice.