Principal Certifier and Inspections in Sydney
The principal certifier is appointed before building work starts, carries out critical-stage inspections during construction, and issues the occupation certificate when the work is complete and suitable to occupy or use. The role was formerly called the PCA.


What this service covers
- Principal certifier appointment
- Critical-stage inspections for class 1 and 10 work
- Written inspection outcomes, directions and reinspections
- Path from first inspection to occupation certificate
- Greater Sydney sites
Book an inspection
Request a fee proposal to book a critical-stage inspection or to appoint Exclusive Certifiers as principal certifier. Include the site address, the CDC or construction certificate already issued, and the inspection stage you need.
Submitting the form does not appoint Exclusive Certifiers and does not lock an inspection date until the engagement is confirmed.
The owner appoints the principal certifier
NSW requires a principal certifier to be appointed before building work commences. The owner appoints the principal certifier. The builder cannot choose or influence that appointment.
The principal certifier is responsible for the inspection regime and for the occupation certificate. The role is not project management, site supervision or running the builder’s programme.
Typical class 1 and 10 critical-stage inspections
Required stages depend on the approval and the work. For many class 1 and 10 jobs they include work before covering footings or slab, the frame, wet-area waterproofing, stormwater connections and a final inspection. The approval and the building class determine the exact hold points. This list is typical, not a substitute for the stages that apply to your certificate.
Missed inspections, written directions and reinspections
If an inspection is missed, the work may have to be opened up or additional evidence supplied. Failed or incomplete work is recorded in writing. The work has to be rectified and re-inspected. That is the point of the system.
Request a fee proposal with the address, the certificate already issued and where the project sits today. An enquiry is not an appointment.
What you receive
Once appointed, you receive an inspection programme aligned to the approval, written outcomes for critical-stage inspections, and — when the work and evidence support it — an occupation certificate. Appointment does not mean Exclusive Certifiers supervises the builder or runs the site.
Responsibilities
The owner appoints the principal certifier. The builder books inspections at the correct hold points and does not cover work early. Designers and engineers remain responsible for their documents. The principal certifier inspects, records outcomes and decides occupation certification — not construction quality management or programme advocacy for any party.
Official sources
Questions about principal certifier
When must a principal certifier be appointed?
Before building work starts. The owner makes the appointment. Do not book a pour or a frame stand-up without a principal certifier appointment and a clear inspection plan.
Are critical-stage inspections optional?
No. They are required stages. Missing them can delay or prevent an occupation certificate and can be difficult to unwind after the work is covered.
Related services
Ready to enquire? Request a fee proposal. Submitting the form does not appoint Exclusive Certifiers and does not start a project-specific review.
Request a fee proposal


