NSW residential certification
Principal Certifier Appointments
The Principal Certifier is appointed by the owner to oversee a building project from commencement to completion. The role is to act independently in the public interest, confirming that the work proceeds in accordance with the approval and that mandatory inspections are carried out.
Overview
Under the post-2020 framework, the term Principal Certifier replaced Principal Certifying Authority. The Principal Certifier is engaged by the person having the benefit of the development consent, the owner, and not by the builder. This independence is central to the role.
Before work begins, a Notice of Commencement is lodged and the Principal Certifier appointment is recorded on the NSW Planning Portal. During construction, the critical stage inspections set by the Environmental Planning and Assessment (Development Certification and Fire Safety) Regulation 2021 are carried out at the right points by the Principal Certifier, or by another registered certifier as agreed.
At completion, the Principal Certifier assesses the project for the Occupation Certificate. Appointing the certifier early means inspection points are scheduled in advance and documentation is assembled as the project progresses, rather than scrambled at the end.
Typical timeline
Indicative only, as every project differs. We confirm the timeline for yours once complete documentation is held.
Appointment
before workThe owner appoints the Principal Certifier; the appointment is recorded on the Planning Portal.
Notice of Commencement
before workLodged on the NSW Planning Portal before building work begins.
Critical stage inspections
during buildThe mandatory inspections, carried out at each stage before the work is covered up.
Final inspection
on completionThe final critical stage inspection, before the Occupation Certificate.
Occupation Certificate
on completionAssessed and issued once requirements are satisfied.
Required documentation
What a complete application typically holds. Conditional items apply where the site or building triggers them.
| Document | Detail | Status |
|---|---|---|
| Development consent or CDC | The approval the project is being built under. | Required |
| Construction Certificate | Where the project proceeded via a DA. | Conditional |
| Notice of Commencement | Lodged on the Planning Portal before work. | Required |
| Inspection schedule | Critical-stage inspection points for the project. | Required |
| Contractor and insurance detail | Builder details and applicable insurances. | Required |
Common issues and delays
Late appointment
Engaging a Principal Certifier after work has started can leave required inspections un-witnessed and create compliance gaps.
Un-witnessed inspections
A critical-stage inspection that is missed cannot simply be repeated later; it may require a remediation pathway.
Commencement before lodgement
Beginning work before the Notice of Commencement and appointment are recorded is a regulatory breach.
Assuming the builder appoints
The owner appoints the certifier. Misunderstanding this can delay the start of the project.
Frequently asked
Who appoints the Principal Certifier?
The owner, the person with the benefit of the development consent, appoints the Principal Certifier. The certifier acts independently in the public interest and is not engaged by the builder.
When should I appoint a Principal Certifier?
Before building work begins. The appointment and Notice of Commencement must be recorded on the NSW Planning Portal before work starts, and early appointment lets inspection points be scheduled in advance.
What are critical stage inspections?
Mandatory inspections at set stages of construction, carried out before the work is covered. For a Class 1 or 10 building they run from footings, through concrete pours, framework, wet-area waterproofing and stormwater, to a final inspection before the Occupation Certificate. Which stages apply depends on the building, and the approval can require more, so we confirm the schedule for your project. They are carried out by the Principal Certifier, or by another certifier as agreed.
Ready to get started?
Need a Principal Certifier?
Tell us about your project and its stage. We will set out the appointment process and the inspection schedule from commencement to Occupation Certificate.
We respond to enquiries within one business day.