Tradie Forms: complete QLD Form 15 on the official PDF layout when you need to hand a building certifier a design or specification certificate. Fill the property, extent, basis, reference documents, certifier details, competent person block, signature, and date before the job file goes cold.
QLD Form 15 turns up when the building certifier needs a clear certificate for a design or specification, not a half-readable note attached to an email. You might be in the site office with marked-up plans open, in the ute after a meeting, or back at the workshop with the certifier asking for the certificate before the approval can move.
The job is simple in theory. State the aspect or specification. Explain the basis for the certificate. List the drawings, standards, tests, or product documents relied on. Add the appointed competent person details. Sign it.
The messy part is doing that cleanly while the project has moving drawings, revised specs, product substitutions, and approval numbers flying around. A flat PDF does not help much when you are filling long narrative fields on a phone.
Use the QLD Form 15 template when you want a guided version of the official PDF layout, or browse QLD building forms for related building paperwork including QLD Form 12 aspect inspection certificates.
What QLD Form 15 is for
Business Queensland lists Form 15 as the compliance certificate for building design or specification, with the current PDF effective from 10 March 2023.
The official Form 15 says it is the approved form used under section 10 of the Building Act 1975 and sections 73 and 77 of the Building Regulation 2021. In plain terms, it is a design-specification certificate. It states that an aspect of building work or specification will, if installed or carried out as stated in the form, comply with the building assessment provisions.
That wording matters. Form 15 is about design or specification. It is not the same job as Form 12, which is an aspect inspection certificate after work has been completed and inspected. Form 15 helps the building certifier assess a building development application, issue a building development approval, or deal with updated aspect information such as glazing, truss specifications, or revised excavation drawings.
Tradie Forms maps your entries onto the official Form 15 PDF layout. It does not decide whether the design or specification complies, whether you are the right competent person, or whether the building certifier can rely on the certificate. The appointed competent person and the building certifier remain responsible for checking the work and the exported PDF.
Who completes Form 15
The Form 15 appendix says a building certifier can accept the certificate from a competent person for design-specification work. The certifier must assess and decide to appoint an individual as a competent person before accepting design-specification help.
The official form also says the building certifier must consider the person's experience, qualifications, and skills, and ensure the person holds a licence or registration if required. The certificate must be signed by the individual assessed and appointed by the building certifier as competent to give that design-specification help.
On site, do not treat this as a generic company certificate. Before filling the form, confirm:
- The building certifier appointed you for this type of design-specification help
- The aspect or specification matches the appointment
- Your licence, registration, role, and contact details are current where they apply
- You can explain the basis for the certificate
- The reference documents are the current drawings, specs, test results, or product documents
If a manufacturer or supplier completed the design component for a product, the official Form 15 appendix says the building certifier may accept Form 15 from that manufacturer or supplier if the certifier has decided they are a competent person for design-specification. If the supplier did not do the design work, the appendix points to evidence of suitability, such as a product technical statement, rather than pretending the supplier designed it.
The job-site details to collect
Form 15 is short, but the fields carry a lot of weight. Treat each section as part of the project record, not just a box to get through.
Property description
The property section only needs to be completed where street address and property details are applicable. The official form gives examples where it may not apply, such as standard or generic pool design, shell manufacture, or patio and carport systems.
When property details do apply, the description must identify all land subject to the application. Use the street address, suburb or locality, state, postcode, lot and plan details, and local government area. The official form notes that lot and plan details can be found on title documents or a rates notice, and that previous lot and plan details should be used if the plan is not registered by title.
Do not rely on an invoice address if the approval uses different lot and plan details. For staged sites, subdivisions, commercial buildings, or body corporate work, check the approval records before export.
Description of aspect or specification
The description field should say what the certificate covers. The official form gives structural steel roof beams as an example. Your wording should be narrow enough that the certifier, builder, and owner can understand the scope later.
Good wording might include the system, material, room, building area, plan reference, stage, or product range. "Structural design" is usually too broad. "Structural design of steel roof beams to warehouse extension shown on drawings S04 to S08" gives the certifier something useful.
Do not make the form sound like it covers more than you assessed. If it is a standard product design, say that. If it is one part of a staged project, say which part.
Basis of certification
The basis field is where you explain why you can give the certificate. The official form asks for the basis and the extent to which tests, specifications, rules, standards, codes of practice, and other publications were relied on.
This is not a place for "as per plans" if there are drawing numbers, revision letters, engineering calculations, product specs, test reports, or Australian Standards that actually matter.
Use plain wording, but be specific. Include the standard, code, drawing set, report, design criteria, or product documents that support the certificate. If you relied on a test result, say which result. If you relied on a specification, name it.
Reference documentation
The reference section should make the paper trail findable. The official form asks you to clearly identify relevant documentation, such as numbered structural engineering plans.
Use document numbers, drawing titles, revisions, dates, project names, report numbers, and product data where available. If the space is not enough, the official Form 15 appendix says additional material can be created and referred to in an addendum or attachment.
That does not mean every file belongs in the form body. It means the form should point clearly to the documents that support the certificate.
Certifier reference and approval numbers
The form asks for the building certifier reference number and the building development application number if available. These fields help match the certificate to the approval file.
Copy them from the certifier request, approval documents, or project system. Old approval numbers are easy to drag across from the last job, especially where a builder has multiple projects open at once.
Competent person details and signature
The competent person section needs the full name, company name where applicable, contact person, phone, mobile, email, postal address, licence class or registration type where applicable, and licence or registration number where applicable.
Tradie Forms can save competent person details so you do not retype the same name, licence, postal address, and contact block every certificate. Still check the details before export, especially after licence renewals, role changes, or a business address update.
The signature section belongs to the appointed individual. The official form states that the certificate must be signed by the individual assessed and appointed by the building certifier as competent to give design-specification help.
Common Form 15 mistakes
Treating Form 15 like Form 12
Form 15 is for design or specification. Form 12 is for an aspect inspection after work has been completed and inspected. If the job moment is wrong, the form may be wrong too. Use the Form 12 guide when the certificate is about an inspected aspect of completed work.
Leaving the basis too thin
"Complies with NCC" or "as per plans" may not be enough for the certifier to understand what you relied on. Include the actual basis for your certificate. Use drawing numbers, standards, report names, specification references, product documents, and revisions where they apply.
Certifying more than you assessed
Broad wording creates problems later. If your certificate covers one material, system, stage, product, drawing set, or design package, say that. Do not make a narrow certificate sound like a whole-building certificate.
Reference documents are hard to match
A project can have several versions of the same drawing. "Engineering plans" is weak if the certifier needs revision C, dated 3 May 2026. Name the documents so the job record can be checked later.
Competent person details are out of date
Saved details save time, but they are not a licence check. Review name, company, contact, licence, registration, and postal details before issuing the PDF.
How Tradie Forms helps
Tradie Forms turns QLD Form 15 into guided sections that match the official PDF order:
- Property
- Extent of aspect or specification
- Basis of certification
- Reference documentation
- Building certifier reference and approval number
- Competent person details
- Signature and date
You can fill the certificate at the job, in the site office, or back at the workshop without fighting a flat PDF. Saved competent person details cut repeat typing. Required-field checks catch missing name, signature, and date before export. The preview shows the official PDF layout so you can check how long descriptions and references land on the form.
When the PDF is ready, download it for the building certifier and attach it to the job record with the drawings, specs, addenda, calculations, product documents, and correspondence that support the certificate.
A clean handover habit
For most teams, the best Form 15 habit is simple:
- Confirm the certifier appointment and scope.
- Open the current drawings, specs, product documents, and approval references.
- Fill the property section if it applies to the certificate.
- Describe the exact aspect or specification covered.
- Write the basis for certification in plain, specific language.
- Name the reference documents with dates and revisions where available.
- Add the certifier reference and approval number.
- Check competent person details.
- Preview the official PDF layout before sending.
- Store the finished PDF with the supporting job records.
That habit keeps the certificate tied to the actual design package, not memory and old email threads.
Next steps
Start the QLD Form 15 design or specification certificate when you need to prepare the official PDF layout, or browse QLD building forms for related paperwork.
If the job is about a completed and inspected aspect of building work, use QLD Form 12 instead.
Official references
For current requirements, check the Business Queensland building forms page, the Queensland Form 15 PDF, and the Business Queensland competent persons guidance.