To fill out and submit Form 12 in QLD, an appointed competent person inspects the specific aspect of building work, completes each field of the Aspect Inspection Certificate with the property details, building classification, aspect inspected, and the standards or plans relied on, signs and dates the form, and delivers it directly to the building certifier for the project. The current version of the form (effective 10 March 2023) is available as a PDF or DOCX download from the Queensland Department of Housing website.
Before You Complete the Form
Two things need to be true before you put anything on the page. You must be a person formally appointed as a competent person (inspection) by the building certifier for the project, and Form 12 must be the right form for the aspect you inspected.
The appointment is not automatic. The certifier evaluates your experience, qualifications, and skills, and confirms you hold any licence or registration the law requires for the type of work being inspected.1Queensland Government. Building Regulation 2021 Form 12 Aspect Inspection Certificate For footing reinforcement on a class 1a building, the regulation is explicit: the competent person must be a registered professional engineer.2Queensland Government. Building Regulation 2021 For boundary clearances on the same class of building, it must be a cadastral surveyor. For other building classes and aspect types, the certifier has discretion to determine who qualifies, but you still need whatever professional registration or QBCC licence the work demands.
Under section 74 of the Building Regulation 2021, you can give the certifier an aspect inspection certificate only after inspecting the work and being satisfied it complies with the building development approval, with the inspection carried out in line with best industry practice.2Queensland Government. Building Regulation 2021
Is Form 12 the Right Form?
For a single detached class 1a building (a typical house), the certifier can only accept a Form 12 for two aspects: boundary clearances and reinforcement of footing systems or formwork and reinforcement for a slab. Every other aspect on class 1a and class 10 buildings (sheds, carports, fences) uses Form 43, completed by the QBCC licensee who carried out the work.1Queensland Government. Building Regulation 2021 Form 12 Aspect Inspection Certificate Submit a Form 12 for an aspect that should have used Form 43 and the certifier will reject it.
Common aspects that do call for Form 12 on other building classes include waterproofing, tiling, glazing, energy efficiency measures, emergency lights, exit signs, smoke detection systems, and air-conditioning installations.1Queensland Government. Building Regulation 2021 Form 12 Aspect Inspection Certificate These are the kinds of aspects that get concealed by later work, or that need specialist technical knowledge the certifier may not personally hold.
Filling Out Each Section
The form is structured to give the certifier everything they need to accept and rely on your certificate. Work through it in order.
Property details. Enter the street address and the Real Property Description, which is the lot and plan number shown as SP or RP on title documents or a rates notice.1Queensland Government. Building Regulation 2021 Form 12 Aspect Inspection Certificate
Building description and classification. Describe the type of building or structure and give the classification determined under the National Construction Code. Class 2 for an apartment building, class 5 for an office, and so on.
Aspect of work inspected. Be specific. “Waterproofing to ensuite bathroom” or “reinforcement of footing system” tells the certifier exactly what you are certifying. Vague entries like “general compliance” get the form bounced back.
Basis for giving the certificate. This is the section that carries the weight. State the basis for your certification, including the extent to which you relied on tests, specifications, rules, standards, codes of practice, or other publications.2Queensland Government. Building Regulation 2021 Reference the specific Australian Standards by number, such as AS 3740 for waterproofing, and cite the exact drawing numbers from the approved plans. The more precise the entry, the less likely the certifier is to come back with questions.
Competent person details. Your full name, licence class or registration number, and contact information.
Signature and date. Sign the form personally and record the date the inspection actually took place, not the date you filled the form in.
Every field feeds the certifier’s decision-making and record-keeping obligations. If they cannot clearly link your form to the approved plans and the relevant standards, they cannot rely on it, and an incomplete form slows the whole project down.
Submitting the Certificate to the Certifier
Once signed, the Form 12 goes directly to the building certifier for the project. There is no central government portal for lodging it. Most certifiers accept a scanned signed copy by email; some will accept hand-delivered originals. Check the certifier’s preferred method before sending.
The certifier assesses whether to accept and rely on your certificate as part of their broader compliance record. They combine collected Form 12 certificates with Form 16 Inspection Certificates for stage inspections to build the compliance trail needed before issuing final project certificates. For a single detached class 1a or class 10 building, the end point is a Form 21 Final Inspection Certificate, which the certifier gives the owner once satisfied all work complies with the building development approval.3Queensland Government. Form 21 Final Inspection Certificate For other building classes, the end point is a Form 11 Certificate of Occupancy.4Business Queensland. Building Certificate of Occupancy
Timing matters. Aspect inspections often cover work that gets concealed by the next stage of construction. If a builder proceeds to the next stage without the required inspection certificate for the current stage, the building certifier must notify the QBCC once aware, and the QBCC has discretion to investigate and take enforcement action.5Queensland Government. Guidelines for Inspection of Class 1a and 10 Buildings or Structures In practice, that can mean the builder having to uncover concealed work at their own expense so the inspection can happen.
Form 12 Compared With Form 43 and Form 15
Queensland’s building framework uses several certificates that get mixed up. If someone hands you the wrong one, the certifier will not accept it.
- Form 12 Aspect Inspection Certificate (Appointed Competent Person) is used for aspect inspections across all building classes. For class 1a buildings, it is limited to boundary clearances and footing reinforcement only. Completed by the competent person appointed by the certifier after inspecting the work.1Queensland Government. Building Regulation 2021 Form 12 Aspect Inspection Certificate
- Form 43 Aspect Certificate (QBCC Licensee) is used for aspect work on single detached class 1a buildings and class 10 buildings and structures. Completed by the QBCC licensee who carried out or authorised the aspect work, not by an independent inspector.6Queensland Government. Form 43 Aspect Certificate QBCC Licensee
- Form 15 Compliance Certificate for Building Design or Specification is used at the design stage, before construction begins. It certifies that a proposed aspect of building work or specification will comply if installed or carried out as described, and the certifier relies on it when assessing the building development application.7Queensland Government. Form 15 Compliance Certificate for Building Design or Specification
Form 15 covers the design (will it comply if built as planned?). Form 12 covers the completed work (was it actually built as planned?). Form 43 is the self-certification route for licensed tradespeople on houses and small structures.
Penalties for Getting It Wrong
Giving a building certifier a document or certificate you know is false or misleading carries a maximum penalty of 100 penalty units. The Building Regulation 2021 increased this from 20 units because of the seriousness of the offence.8Queensland Government. Building Regulation Changes – Building Regulation 2021 As of 1 July 2025, one penalty unit in Queensland is worth $166.90, which puts the maximum fine for a false Form 12 at $16,690.9Queensland Government. Sentencing Fines and Penalties for Offences
The certifier is exposed too. A certifier who accepts a Form 12 from someone without the appropriate credentials puts their own licence at risk, and the QBCC can investigate and take disciplinary action against certifiers found to have failed their obligations.10Queensland Building and Construction Commission. Complaint Against a Certifier That is why the certifier will check your appointment paperwork and your licence before relying on anything you sign.