Building Certification

In New South Wales, building certification is the process of independently inspecting and approving building work to ensure it complies with the National Construction Code (NCC), the Environmental Planning and Assessment Act, and relevant development consent conditions. Accredited certifiers (Principal Certifying Authorities) review designs, issue approvals, inspect work at mandatory stages, and certify that completed buildings are safe and fit for occupation.

Certification is separate from engineering design: certifiers assess compliance; designers demonstrate how the building meets the code. For most new building work, you cannot lawfully commence construction without an approved Construction Certificate (or Complying Development Certificate where applicable), and you cannot occupy a building without an Occupation Certificate or Interim Occupation Certificate.

Nunese is a civil and structural engineering consultancy. We do not act as accredited certifiers. We provide the certified engineering design and documentation that certifiers and councils need to assess your project — and we stay engaged through construction to resolve technical queries that affect approval and sign-off.

You need a certification pathway whenever new building work, change of use, or substantial alterations require approval under the NCC in NSW (and equivalent frameworks in other states). Certification support from your engineer is valuable when:

Our role is to deliver certifiable engineering design and to bridge the gap between your project team and the certifier. Typical scope includes:

The NCC sets mandatory performance requirements for structure, fire safety, access, health and amenity, energy efficiency and more. Your approval pathway depends on development type, building class and local planning controls.

Common pathways include Development Application (DA) followed by Construction Certificate (CC), or Complying Development Certificate (CDC) for code-compliant work on qualifying land. The Principal Certifying Authority (PCA) — an accredited private certifier or council certifier — issues the CC, conducts mandatory inspections during construction, and issues the Occupation Certificate when the work is complete and compliant.

We align structural and civil deliverables with the NCC volumes applicable to your building class (e.g. Class 5 office, Class 6 shop, Class 7 warehouse, Class 8 factory, Class 9 public building). Where sustainability provisions apply (such as BASIX for residential components), we coordinate with specialists so structural and civil scope does not hold up certification.

Understanding the certification timeline helps keep your programme on track:

Certifiers need clear, complete engineering information — not fragmented calculations. We package structural and civil design for efficient review: indexed drawing sets, referenced standards, explicit design actions and load paths, and details that reflect site constraints on industrial and mining projects.

When certifiers issue RFIs or council imposes conditions, we respond with technical revisions grounded in code compliance and constructability. On operating sites, we understand production windows, access limits and the need to stage certification for partial occupation where allowed.

If you do not yet have a certifier, we can advise on information required for CC lodgement and work with your nominated Principal Certifying Authority once appointed. Our goal is the same as yours: lawful construction, safe buildings, and no surprises at final inspection.