Structural · 6 min read
Building approval in Queensland: who signs what, and where engineering fits
Most delays we see are paperwork order, not engineering. Knowing who signs what — and in which sequence — saves weeks. Here is the Queensland approval pathway in plain language.
The players
Four different people sign different things, and none of them can do another's job.
- Designer or architect — produces the architectural documents
- RPEQ engineer — designs the structure and certifies the design (Form 15)
- Building certifier (usually private) — issues the building approval and the final certificate
- Builder — builds it, and provides Form 16 aspect inspection certificates where required
Form 15 and Form 16
Form 15 is a design and specification certificate: an engineer certifies that a designed component complies with the relevant standards. It goes with the structural drawings into the approval application.
Form 16 is an inspection and aspect certificate: it confirms that a completed aspect was inspected and complies. Both are routine parts of Queensland residential work, and we issue them for the work we design and inspect.
The order that avoids delays
Architectural concept, then site information (survey and geotechnical report), then structural design and Form 15, then the building approval application, then construction with staged inspections and Form 16 where needed.
Applying before the engineering is finished, or ordering a kit before the wind classification is confirmed, are the two most common causes of rework.
Where certification alone is enough
Sometimes there is already a design — a supplier's drawings, a kit, or another engineer's documents — and all that is missing is RPEQ review and certification. We can review, amend where needed and certify, rather than redesign from scratch.
Design certification and stamping is quoted free once we have seen the documents. We only certify what we have checked.
Frequently asked questions
- What is a Form 15 in Queensland?
- A design and specification certificate signed by an RPEQ engineer confirming the designed component complies with the relevant standards. It supports the building approval application.
- Can you certify drawings you did not design?
- Yes, after reviewing them and checking they comply. We may require amendments before certifying. This is quoted free once we see the documents.
- Do I go to council or a private certifier?
- Most residential work in Brisbane goes through a private building certifier. Some work also needs council approvals for overlays, sewers or boundary issues.
Send your drawings for a free certification quote.
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