What is a Form 21 in Queensland?

A Form 21 is the Final Inspection Certificate issued by your building certifier under the Building Act. It certifies that the building work is complete and complies with the building approval, and for a house it confirms the home may be lawfully occupied. It's the single most important certificate to have in hand before you move in — the equivalent of a certificate of occupancy for a class 1 dwelling.

What's the difference between a Form 15 and a Form 16?

A Form 15 is a Compliance Certificate for Building Design or Specification — a competent person (such as an engineer or energy assessor) certifies that a design or specification complies with the code. A Form 16 is an Inspection Certificate or Aspect Certificate — it certifies that building work, or a particular aspect of it, was inspected and complies. In short: Form 15 certifies the design, Form 16 certifies the work.

Do I get these certificates automatically at handover?

You should, but they are sometimes incomplete or missing when a home is presented for handover. A practical completion inspection checks that the certificates you're entitled to — the Form 21 and the relevant Form 15s and Form 16s, including the termite, waterproofing and energy certificates — are present and issued in your name, so you're not chasing paperwork after you've paid the final claim.

Who issues the Form 21?

The private building certifier engaged for your project issues the Form 21 after their final inspection. It is a regulatory sign-off that the work complies with the building approval — separate from an independent inspection, which is the buyer-facing check on finish quality, contract items and defects that the certifier isn't engaged to assess.

Form 15, 16 and 21 Explained — Your New Home's Compliance Certificates

A handover inspection checks the build itself against these certificates before you sign off. When your new Queensland home reaches completion, the physical building is only half of what you're paying for. The other half is the paper trail that proves it was designed, inspected and finished to code — and at the centre of that trail sit three documents: Form 15, Form 16 and Form 21.

These are statutory certificates under Queensland's Building Act and Building Regulation. They aren't optional, and they aren't the same thing as an independent inspection report. Understanding what each one certifies — and confirming you actually have them at handover — is one of the most important and most overlooked parts of taking ownership of a new home.

Form 21 — the Final Inspection Certificate

The Form 21 is the one to know first. It's the Final Inspection Certificate, issued by your private building certifier after their final inspection, and it certifies that the building work is complete and complies with the building approval. For a house (a class 1 dwelling), the Form 21 is what confirms the home may be lawfully occupied — effectively the certificate of occupancy for your build.

If you take nothing else from this article: do not move in without the Form 21. Occupying a home that hasn't received its final certificate can create real problems with insurance, finance and any future sale. It should be issued at or before handover.

Form 15 — the Compliance Certificate for Design

A Form 15 certifies a *design or specification*. A competent person — an engineer for the structural design, an energy assessor for the thermal-performance report, a fire engineer where relevant — signs to say that the design they're responsible for complies with the National Construction Code and the relevant standards.

On a typical new home you might see Form 15s covering the slab and footing design, the steel or truss design, and the energy-efficiency (thermal performance) specification. They matter because the certifier and the trades rely on them: the slab is poured to the engineer's Form 15 design, and if the design changed on site, the paperwork should reflect it.

Form 16 — the Inspection or Aspect Certificate

A Form 16 certifies *building work* — that an aspect of the construction was inspected and complies. Two groups issue them:

Your building certifier, at the mandatory inspection stages the approval requires (typically footings/slab, frame, and final). These confirm the regulated stages passed.
Competent persons, certifying specialist aspects they're responsible for — commonly the termite management system, wet-area waterproofing, and plumbing and drainage work.

So the Form 16s are the evidence that the buried and covered-up parts of your home — the parts you can no longer see at handover — were inspected and signed off by someone qualified at the time they were done.

Why these certificates and an independent inspection are different

It's worth being clear about what these forms do and don't tell you. They are regulatory compliance documents: they certify that the work meets the building approval and the code. They are not an assessment of finish quality, they don't check your work against your *contract specification*, and the certifier who signs them isn't engaged to hunt for the cosmetic and workmanship defects that decide whether your home was well built.

That's the gap an independent inspection fills. A PCI inspection is the buyer-facing check — every accessible area assessed against the QBCC Standards and Tolerances, the National Construction Code and the Australian Standards, with each defect photographed. The forms and the inspection report are complementary: the forms prove compliance, the report protects quality. We explain the distinction further in our guide to the independent inspector versus the certifier.

What to check at handover

When your home is presented for handover, make sure you receive — and that they're issued in *your* name:

The Form 21 final inspection certificate.
The relevant Form 15s — structural/engineering design and the energy-efficiency specification.
The relevant Form 16s — the certifier's stage certificates plus the termite management and waterproofing aspect certificates.
The termite durable notice (fixed in a prominent place, usually the meter box) and any manufacturer warranties for fixtures and appliances.

Missing or incomplete certificates are a common finding when a home is rushed to handover. A VG Inspect PCI inspection confirms the compliance documentation is present alongside the physical check, so you're not left chasing paperwork after you've paid the final claim and accepted the keys. Read more about the sequence in our handover guide, or book an inspection to have it checked before you sign.