Most homeowners in Australia know to check that their builder is licensed. Far fewer check the other professionals who shape, document and sign off the same project - the architect or building designer who prepares the drawings, the certifier who approves the work, and the structural engineer whose design carries the loads.
Each of those roles carries its own registration requirement, its own state-based register and its own consequences when the person turns out not to be registered. Documentation prepared by an unregistered practitioner can be rejected at approval stage. A certificate issued by someone whose licence has lapsed can be challenged. Structural design produced outside a mandatory registration scheme can leave you without the professional indemnity cover you assumed was sitting behind the work.
None of these checks are difficult. Each takes a few minutes on a public register, and each is far cheaper to do before you engage someone than to unwind afterwards. The difficulty is knowing which register applies to which role, because Australia regulates these four professions through separate schemes in each state and territory rather than through one national system.
This guide sets out how to verify each of the four professional types, what a valid registration record looks like, and where the requirements genuinely differ between states. It is the natural companion to the BUILTLY guide on how to check a builder's licence in Australia, and sits within the broader BUILTLY complete guide to building a house in Australia.
Why registration checks matter across every role, not just the builder
Registration and licensing schemes exist because building work is difficult for a consumer to assess and expensive to correct. A registered practitioner has demonstrated a qualification standard, is required in most cases to hold professional indemnity or equivalent insurance, is bound by a code of conduct, and is subject to a complaints and disciplinary process run by the regulator. Take the registration away and every one of those protections goes with it.
The risk is not evenly distributed across a build, and it is not always obvious. A builder who is unlicensed will usually be caught at contract or insurance stage, because home warranty and domestic building insurance schemes are tied directly to the builder's licence. The design and certification roles have no equivalent gate. Nobody automatically checks that the person drawing your plans is entitled to call themselves an architect, or that the engineer whose name appears on the footing detail holds current registration in the state where the work is being built.
Three failure modes account for most of the trouble. A lapsed registration, where the practitioner was registered when you first spoke to them but not by the time they issue the document you are relying on. A scope mismatch, where the registration is genuine but sits in a class that does not cover your project. And title misuse, where a person describes themselves in a way that implies registration they do not hold.
All three are visible on a public register in under five minutes. The habit worth forming is simple: before you sign anything or pay a deposit, ask each professional for the exact name their registration is held under and their registration number, then confirm both against the register yourself rather than accepting a screenshot or a certificate supplied by the practitioner.
Check the person, not just the business
Registration attaches to individuals in most of these professions, while the entity you contract with is often a company. A practice can hold a company registration or approval while the individual actually doing your work is unregistered or is working under supervision. Ask which named individual will prepare and sign the documentation, and verify that person.
How to check an architect's registration
Architect is a protected title in every Australian state and territory. A person may only call themselves an architect, or offer architectural services under that title, if they are registered with the architects registration board in the relevant jurisdiction. Each state and territory has its own board operating under its own architects act, and each board publishes a public register of registered architects and, in most jurisdictions, of approved architectural practices.
Because the title is protected, this is the most clear-cut of the four checks. Either the person is on a board register or they are not entitled to use the title. For what architects actually deliver at each stage and how their fees are structured, see the BUILTLY guide on what an architect does. This section deals only with the verification step.
How to search the register
The process is the same in every jurisdiction, even though the board differs:
- Identify the state or territory where the project is being built, and search that jurisdiction's architects registration board register
- Search by surname or by registration number rather than by trading name, because the register lists individuals
- Confirm the registration status shows as current or registered, not lapsed, suspended or cancelled
- Check whether the individual and the practice are separately listed, and confirm both where the board maintains a practice register
- Note any conditions recorded against the registration and ask the architect to explain them
What a valid registration record looks like
A valid record will show the architect's full registered name, a registration number, a current status and the jurisdiction of registration. Many boards also show the date of first registration and any registration conditions. If the register shows a status other than current, the person is not entitled to provide architectural services under that title in that jurisdiction, regardless of what their website or letterhead says.
Two details commonly cause confusion. Mutual recognition lets an architect registered in one state obtain registration in another, but it is not automatic, so if your project is in Queensland and your architect is registered only in Victoria, ask whether they hold Queensland registration. And membership of a professional institute is voluntary, so a membership certificate is not proof of board registration.
For background on when an architect is the right appointment for a residential project in the first place, see the BUILTLY guide on architects in Australia.
How to check a building designer's registration
Building designers are regulated very differently from architects, and the difference is jurisdictional rather than national. There is no single Australian building designer register, and there is no protected national title. In some states a building designer must be registered or licensed as a building practitioner before they can prepare documentation for approval. In others there is no dedicated registration requirement for the design role at all, and the quality control sits entirely with the certification and approval process.
This is the single most misunderstood point in practitioner verification. A building designer operating lawfully in a state with no registration scheme is not doing anything wrong by being absent from a register, because no register exists for them to appear on. Equally, a building designer working in a state that does require registration and who is not registered is a genuine problem. The only safe approach is to confirm what the requirement is in the state where the work will be carried out, rather than assuming the position is uniform across the country.
The questions to ask
Regardless of the state, four questions establish where you stand:
- Does this state or territory register or license building designers as building practitioners, and if so under what category
- If registration applies, what class does the designer hold, and does that class cover the scale and type of building on my project
- If no registration scheme applies, what qualification, experience and insurance does the designer hold instead
- Who will actually prepare and sign the documentation, and does that person hold the registration or qualification described
Registration classes and scope limits
In jurisdictions that do register building designers, registration is typically graded by class. Lower classes are limited to smaller and simpler buildings, and higher classes extend to larger or more complex work. A designer registered for single dwellings may not be registered to document a multi-unit development. Checking the class is therefore as important as checking that a registration exists, because a class mismatch can stop your documentation at approval stage even though the designer is genuinely registered.
Professional indemnity insurance deserves particular attention here. Where registration is required, insurance is usually a condition of holding it. Where registration is not required, there is no automatic insurance requirement, so ask for a current certificate of currency and check that the sum insured is sensible relative to the value of the project.
If you are still deciding which of the two design routes suits your project, the BUILTLY comparison of building designer versus architect sets out how the two roles differ on scope, cost and the type of project each tends to suit, and it is listed in the related guides below.
How to check a building certifier's licence
Of the four professionals covered here, the certifier is the one whose registration has the most immediate legal effect on your project. The certifier issues the approvals and the certificates that allow work to start, continue and be occupied. If the person issuing those documents is not licensed for the class of work, the validity of the documents themselves can be called into question, which is a far worse position than simply having engaged the wrong adviser.
What a certifier does, when you need one and how private certification compares with going through council are covered in detail in the BUILTLY guides on building certifiers in Australia and private certifier versus council approval. This section covers only the verification step.
Find the right register and the right category
Certifiers are registered under state and territory building legislation, and the title used varies. Depending on the jurisdiction the role is described as a building certifier, a building surveyor, a private certifier or a registered building practitioner in a surveying category. The register is usually maintained by the state building regulator or the body that administers building practitioner registration in that jurisdiction, and it is generally a different register from the one used for builder licences.
Work through these steps:
- Search the building practitioner or certifier register for the state where the project is located, not the state where the certifier's office is based
- Confirm the individual's licence status is current and has not lapsed, been suspended or been made subject to conditions
- Check the licence class or level, because certifier registration is graded and lower levels are restricted to smaller and lower-risk buildings
- Confirm the class covers the building classification of your project, including any secondary structures such as a pool, retaining wall or garage that forms part of the approval
- Ask in writing whether the certifier has any conflict of interest with the builder or designer on the project, and record the answer
Verify at appointment and at each certificate
A certifier's involvement in a residential build runs over months and sometimes years, from the initial approval through mandatory inspections to the final certificate. A registration that was current at appointment can lapse before the final certificate is issued. It is worth re-checking the register before the final inspection, and worth keeping a dated copy of each register result alongside the certificate it relates to.
Keep the certificates themselves as well, since every approval and inspection record forms part of the compliance history a future buyer, insurer or lender will ask to see.
How to check a structural engineer's registration
Engineer registration in Australia is a patchwork of state schemes rather than one national requirement, and the schemes have been expanding. The result is that the answer to the question "does my engineer need to be registered" depends heavily on where the project is and what the engineer is being asked to certify.
Queensland is the clearest and strictest case and is worth naming specifically. Queensland has operated a mandatory registration scheme for professional engineers for decades under the title Registered Professional Engineer of Queensland, commonly shortened to RPEQ. Engineering services provided for Queensland projects generally must be carried out by an RPEQ or under the direct supervision of one, and the register is public and searchable by name and registration number. If your project is in Queensland and the engineer producing your slab, footing or framing design is not an RPEQ and is not supervised by one, that is a clear issue to raise before the design is issued.
Other jurisdictions have introduced or expanded their own engineer registration arrangements, often prompted by the same building confidence reforms that tightened certifier and designer regulation. Because these schemes have commenced at different times and cover different engineering disciplines, an engineer working outside Queensland may hold a different state registration, or may be working in an area where registration is not yet mandatory. Ask which scheme they are registered under and confirm it on that scheme's register.
What to confirm before design work starts
- The named individual who will produce and sign the structural design, not just the engineering firm
- The registration scheme and number that individual holds, and the state it applies to
- Whether the registration covers the relevant engineering discipline, since these schemes are typically divided by area of practice
- Current professional indemnity insurance held by the practice, with a certificate of currency
- Whether the engineer will also carry out inspections during construction or only produce the design
Why the engineer check is easy to miss
Homeowners rarely engage the structural engineer directly. The builder or designer engages them, the drawings arrive inside a documentation package, and the homeowner never speaks to the engineer at all. That is why the check gets skipped. You are still entitled to ask who prepared the structural design, and a builder with nothing to hide will supply the name and number.
Where you are making the engineering appointment yourself, treat registration as the first check and residential experience as the second.
Why this matters at different build stages
These four checks are not a single task to complete once. Each becomes relevant at the point where that professional's work first affects the project, and each is cheapest to resolve before their documentation is issued and relied upon.
Design stage
Verify the architect or building designer before you sign a design agreement or pay a concept fee. This is the earliest point at which real money changes hands, and the point at which a registration problem is easiest to walk away from. Documentation produced by an unregistered practitioner in a state that requires registration may need to be reissued by someone who is, which costs both fee and programme.
Structural design and documentation stage
Verify the structural engineer before the engineering package is issued for approval and pricing. Structural documentation drives the footing design, the frame and a meaningful share of the construction cost. Discovering a registration problem after the slab is poured is not a paperwork issue, it is a rectification issue.
Approval and certification stage
Verify the certifier at appointment, before the first approval is issued. Because the certifier's authority underpins the validity of the approval documents, this is the check with the most direct legal consequence if it is missed.
Construction stage
Verify the builder's licence before contract, using the state register that applies to your project. Queensland projects are covered in the BUILTLY guide on the QBCC licence check in Queensland, and New South Wales projects in the guide on how to check a builder's licence in NSW.
Completion and handover
Re-check the certifier's status before the final certificate, and collect every registration record you have gathered into the project file alongside the certificates, approvals and insurance documents. The value of these checks is only fully realised when the evidence survives the build.
If a practitioner cannot be verified
A failed search is not always a red flag. Registers are searched by legal name, and practitioners routinely trade under a business name that bears no resemblance to the name on their registration.
Work through the possibilities in order before drawing a conclusion:
- Search by registration number rather than name, since the number is unique and unambiguous
- Ask for the exact registered name and the registering body, then repeat the search
- Confirm you are searching the correct state register for the location of the project
- Confirm you are searching the correct practitioner category, because builders, certifiers and designers are usually listed separately
- Check whether registration is held by a supervising individual within the practice rather than by your day to day contact
If the person still cannot be located, put the question in writing and ask for the register, the category and the number in reply. A registered practitioner will answer within a day, because the information is public. Evasion or an offer to send a scanned certificate instead of a register reference is itself the answer.
Do not sign, do not pay a deposit and do not allow work to start while the position is unresolved. Where you have already paid or work has commenced, contact the relevant state regulator, since unregistered practice is a matter they investigate and it is far better raised early than at handover.
BUILTLY and lasting project records
Registration confirms that a person is legally allowed to do the work. It does not tell you whether they do it well. A current registration and a long list of poorly documented projects can sit comfortably together, because the register records entitlement, not outcome.
BUILTLY is building a record of completed Australian homes that credits the builder, architects, designers and trades behind each one.
The two checks are complementary starting points. Search the state register to confirm entitlement, then look at the published record of completed projects to judge quality and consistency.
Frequently asked questions
Is an architect's registration the same in every Australian state?
No. Architect registration is administered separately by a registration board in each state and territory, under that jurisdiction's own architects legislation. The professional standard is broadly consistent across the country and mutual recognition allows a registered architect to be registered in additional jurisdictions, but the register you search depends on where the person practises. A person registered in one state is not automatically shown on another state's register unless they have taken out registration there as well.
Do building designers need to be registered in Australia?
It depends on the state or territory. Some jurisdictions register or license building designers as building practitioners in their own right, with defined classes tied to the scale of work they can document. Others have no dedicated building designer registration at all, and the person's work is instead controlled through the certification and approval process. This is one of the most misunderstood areas of practitioner regulation in Australia, so check the requirement that applies in the state where the work is being carried out rather than assuming a national rule.
What is RPEQ and does it apply outside Queensland?
RPEQ stands for Registered Professional Engineer of Queensland. Queensland has operated a mandatory registration scheme for professional engineers for decades, and engineering services provided for Queensland projects generally must be carried out or directly supervised by an RPEQ. The registration itself is a Queensland scheme. Other states have introduced or expanded their own engineer registration arrangements, so an engineer working outside Queensland may hold a different state registration rather than an RPEQ.
Can I check a certifier and a builder on the same register?
Usually not. Builders and certifiers are commonly registered under different practitioner categories, and in some states they are handled by different bodies altogether. Search the practitioner category that matches the role the person is performing on your project. If you are verifying a builder, use the state builder licence register. If you are verifying the certifier who will assess and approve the work, search the building certifier or building surveyor category on the relevant state register.
What should I do if a practitioner does not appear on the register?
Do not assume the register is wrong. Ask the practitioner for the exact name their registration is held under, the registration number and the entity name, then search again. Registrations are frequently held under a legal name that differs from the trading name on a quote or website. If the person still cannot be found, ask them to explain in writing which register they appear on and under what number, and do not sign or pay a deposit until the position is clear.
Does registration tell me whether a professional is any good?
No. Registration is a threshold, not a quality measure. It confirms the person holds the qualifications, insurance and standing required to legally provide the service, and that no current disciplinary restriction prevents them from doing so. It says nothing about the quality of their documentation, how they run a project, or whether their completed work holds up. Registration is the first check. Evidence of completed projects is the second.