A private building certifier is a QBCC-licensed professional who assesses your plans against the Building Act 1975 and the building codes, issues the building development approval, inspects the work at set stages while it goes up, and signs it off at the end. Business Queensland puts it plainly: “Building certifiers manage the building approval and inspection process with all relevant practitioners,” and “all building certifiers must be licensed with the Queensland Building and Construction Commission (QBCC).” Section 10 of the Building Act 1975 defines a “building certifying function” as carrying out building assessment work, giving compliance certificates, inspecting building work, giving stage certificates for a single detached class 1a building or a class 10 building or structure, and giving certificates of occupancy for buildings of other classes. What a certifier is not is your designer, your builder or your quality inspector, and that is a distinction worth getting straight before you sign anything.
What a private building certifier does on your job
Treat the certifier as the independent compliance check running alongside the build. Before a nail is driven they assess the drawings, engineering and energy report against the building codes, the Queensland Development Code and any conditions on the land, then issue the building development approval. Business Queensland describes that approval as what you need “before construction can start on most types of domestic building work,” and confirms “you can get a building approval from your local government or a building certifier.”
Once work starts they inspect at prescribed points, issue documentation for each stage, and at completion issue either a final inspection certificate or a certificate of occupancy depending on the building’s class. Section 9 of the Building Act 1975 recognises two classes of private certifier: a private certifier (class A) holds a development approval endorsement on their licence, and a private certifier (class B) does not. In practice that means only a class A certifier can grant the building development approval itself, so check which one you are dealing with before you engage anybody. Bring them in at design stage, not after the drawings are finished. A setback problem found while the plans are still on the screen is a phone call; the same problem found once the slab is down is a redesign.
Certifier vs council vs builder: who is responsible for what
This is the table worth keeping. Business Queensland sets out five mandatory inspection stages for a class 1a building, citing section 44 of the Building Regulation 2021, and the QBCC lists the same stages for a dwelling as excavation, footing, slab, frame and final. Two of them are conditional on how the building is founded. Business Queensland also notes that “the only mandatory stage of inspection for class 10 buildings and structures (other than swimming pools) is the final stage of inspection.”
| Responsibility or inspection stage | Private building certifier | Local government (Sunshine Coast or Noosa) | Licensed builder |
|---|---|---|---|
| Building development approval | Assesses the plans and issues the approval (class A endorsement) | May issue approvals itself, and holds the records | Must not start work before it is issued |
| Planning scheme or Queensland Development Code variation | Cannot approve it, must refer it | Decides it. Sunshine Coast Council: “Council must receive this request before a building certifier can grant approval” | Flags the conflict early and supplies the detail |
| Excavation stage — after excavation of foundation material and before the concrete for the footings, or slab, is poured | Inspects and passes the stage | No role unless it is the certifier | Books the inspection and holds the pour |
| Footings stage — if the building is to have footings, after the placement of formwork and reinforcement but before the footing concrete is poured | Inspects and passes the stage | No role unless it is the certifier | Sets out, forms up, holds the pour |
| Slab stage — if the building is to have a slab, after the placement of formwork and reinforcement but before the slab concrete is poured | Inspects and passes the stage | No role unless it is the certifier | Coordinates plumber, termite system and slab trades to suit |
| Frame stage — inspection of the frame | Inspects and passes the stage | No role unless it is the certifier | Holds linings until the frame is passed |
| Final stage — Business Queensland lists siteworks and drainage, termite management systems, damp and weatherproofing, fire safety, health and amenity, safe movement and access, construction of wet areas, glazing, sub-floor ventilation, energy efficiency and water saving measures | Inspects outstanding items, collects certificates and issues the final certificate | Holds the approval and inspection documentation on the property record | Completes the work and assembles the trade certificates |
| Plumbing and drainage approval and inspection | Not a certifying function | Noosa Shire Council: “Legislation requires certain plumbing work to be approved and inspected by local government” | Engages a licensed plumber and books council inspections |
| Quality of workmanship and finish | Not a certifying function | No role | Business Queensland: “The contractor and owner share the responsibility for ensuring building work meets an acceptable standard of quality and finish” |
| Rectifying non-compliant work | Declines to pass the stage until it complies | No role | Business Queensland: “the builder must rectify any building work that doesn’t comply with the building legislation” |
| Design and construction of the building | Prohibited. Business Queensland: “Building certifiers must not design the building or carry out any of the work” | No role | Builds to the approved documents |
| Final paperwork | Issues the Form 17 final inspection certificate, or the Form 11 certificate of occupancy for other classes | Receives notice of the certifier’s engagement, on building form 18 or building form 56 | Hands the certificates over with the keys |
What a certifier cannot approve, and why council stays in the picture
A private certifier’s authority stops at the edge of the planning scheme. Sunshine Coast Council states it directly: “Building certifiers cannot approve any work that conflicts with the local planning scheme or the Queensland Development Code.” Noosa Shire Council says the same from the other side: “A building application that requires a variation to the requirements of the Queensland Development Code or the local planning scheme must be submitted to Council prior to the building certifier granting approval.”
So anything outside the standard siting envelope goes to council first: a boundary setback relaxation, extra site cover, a height variation, work near council infrastructure. Sunshine Coast Council handles that as a request for a concurrence agency response for building work, and confirms “Council must receive this request before a building certifier can grant approval.” On the Sunshine Coast the assessment runs under the Sunshine Coast Council Planning Scheme 2014, and in Noosa Shire under the Noosa Plan 2020. It is a separate application sitting on council’s timeframe rather than yours, which is why we run it in parallel with detailed design in our build process instead of waiting until the drawings are finished. There is more on both councils in our guide to building approvals on the Sunshine Coast and in Noosa.
Who engages the certifier, and the paperwork that follows
The QBCC notes that “in most cases, the building contractor is responsible for engaging the private certifier on the client’s behalf. However, property owners can directly appoint a private certifier.” Either way the certifier answers to the legislation, not to whoever pays the invoice: Business Queensland is explicit that certifiers are “bound by a strict code of conduct and have an obligation to always act in the public interest.”
Some statutory clocks matter, and they are short. Where you are the person engaging the certifier and you are not the owner, the QBCC says “you must give the private certifier the name and contact details of the owner within 10 business days after the certifier’s engagement,” and “if the owner’s details change, you must notify the private certifier of the change within 5 business days.” Business Queensland notes the certifier then notifies the owner and local government of the engagement using building form 18, or building form 56 where the client is the owner. From receiving notice of the certifier’s details the owner has 10 business days to request additional inspections or certifying functions beyond the mandatory stages, using building form 31; a client who receives that request must forward it to the certifier within 5 business days, and the parties then have 10 business days to agree a date for the additional work.
At handover, houses are treated differently to everything else. Business Queensland confirms “any building that was built after 1 April 1976 should have a certificate of occupancy,” but that “this doesn’t apply to a single detached house (class 1a), carport or garage (class 10),” which get a final inspection certificate instead. From 1 October 2020 the certificate of classification (Form 11) was amended and renamed the certificate of occupancy, with content and display obligations in sections 103 and 108A of the Building Act 1975.
Pools are their own trap. Business Queensland points to section 44(1)(e) of the Building Regulation 2021 and QDC MP 3.4 for the barrier, and the QBCC is clear that only a pool safety inspector licensed by the QBCC can issue a pool safety certificate, which the QBCC says is current for “1 year for shared pools” and “2 years for non-shared pools.” Where the pool is newly built, or the barrier has been replaced or altered and inspected by a building certifier under a development approval, the QBCC allows the certifier’s Form 17 or Form 11 to stand in place of a pool safety certificate once it is lodged with the QBCC.
If your certifier gets it wrong
The QBCC licenses building certifiers, keeps “a publicly available register of building certifiers, including any conditions, demerit points or any decisions of misconduct complaints,” and can take disciplinary action for unsatisfactory conduct or professional misconduct. Complaints carry time limits: 7 years after a certificate of occupancy is issued for certified building work, 1 year after the certifier is engaged for other building work applications, and 1 year from becoming aware of the conduct in other cases. The QBCC adds that those limits apply “unless the conduct has caused, or may cause, significant financial loss or other serious harm.” Note too that the QBCC does not regulate “the communication method or demeanour of building certifiers and how they engage with their clients/customers,” so slow replies are not a misconduct complaint. Picking a certifier who answers the phone is your own protection, and it deserves the same due diligence you apply when you check a QBCC licence.
Frequently asked questions
Is a private certifier better than going through council?
Neither is inherently better. Business Queensland confirms “you can get a building approval from your local government or a building certifier.” Most Sunshine Coast and Noosa residential work runs through a private certifier because they can be engaged directly and scheduled around the build program, but a planning scheme or Queensland Development Code variation goes back to council either way.
Does the certifier check the quality of my builder’s work?
No. The certifier checks compliance with the approved plans and the building legislation at the prescribed stages. Business Queensland places quality and finish with the contractor and owner, and states that under the building contract the builder must rectify work that does not comply with the building legislation. Workmanship is a contract and defects liability matter, not a certification one.
Can I appoint my own certifier if the builder usually arranges it?
Yes. The QBCC confirms property owners can directly appoint a private certifier rather than leaving it to the contractor. Raise it before contracts are signed, and treat it as one more question to ask when you choose a builder.
What happens if work gets covered before a stage inspection?
The stages are timed around exactly this: excavation before the concrete, footings and slab before the pour, frame before the linings go on. A certifier cannot certify what they cannot see, so if reinforcement is buried or a frame is sheeted before the stage is passed, the practical options are exposing the work again or producing other evidence the certifier will accept. Both cost time and money, and which party wears that is a question for your building contract. The cheap fix is booking inspections into the program rather than around it.
Do I need a certifier for a bathroom or kitchen renovation?
It depends what you are touching. A like-for-like refit inside existing walls is a different proposition to moving or removing walls, altering windows and doors, changing egress or fire separation, or reworking a wet area, and any of those can turn the job into building work needing approval. Plumbing sits on a separate track again: Noosa Shire Council notes that “legislation requires certain plumbing work to be approved and inspected by local government.” Sunshine Coast Council says “a private building certifier can advise whether you need a development building work permit,” so ask before you lock in a scope.