Getting to the final stage of a build only to find the occupation certificate (OC) is on hold is stressful, especially with a move-in date or a settlement looming. Most delays trace back to a short list of causes. Knowing them early gives you time to deal with each one before the final inspection.
The legal tests for an OC
A principal certifier cannot issue an OC on goodwill. The law sets out what they must be satisfied of first. For a home or outbuilding, the main tests are that:
- the building as built is consistent with the approval
- every inspection the law requires has happened
- any conditions tied to the OC stage have been ticked off
- BASIX commitments have been met and a BASIX completion receipt has been obtained
- the building is fit for the approved use and is not a hazard to the health or safety of the people living in it
Each of the hold-ups below fails one of these tests.
The building does not match the approval
Changes made during construction are the most common problem. A window moved, a room added under the house, a larger deck, a different roof pitch. Each one may seem minor on site, but the certifier has to compare the finished building with the approved plans.
A certifier cannot sign off on a change after the fact simply because it looks reasonable. The options are usually to modify the approval or to rectify the work so it matches. Both take time, which is why changes should be raised before they are built.
Missed or failed inspections
If a critical stage was covered up without an inspection, the certifier may not be able to confirm the hidden work. In limited cases a missed inspection can be treated as not required, but only where the certifier is satisfied it was missed for unavoidable reasons and the work itself is acceptable. Otherwise, extra evidence or opening up the work may be needed. The final inspection can never be skipped. Our guide to Critical stage inspections: what we check and when explains each stage.
BASIX commitments not met
BASIX is the NSW scheme that sets energy and water targets for homes. The certificate issued at approval lists specific commitments, and the certifier must check they were delivered. Common gaps include:
- a rainwater tank installed but not plumbed to the toilets or laundry
- a different hot water system from the one listed
- windows or glazing that differ from the certificate
- insulation that does not match the specified rating
Pre-OC conditions still outstanding
Approvals often list items to be completed ahead of the OC. Some are easy to overlook as a long build wraps up, such as:
- landscaping, driveway or footpath work
- repairs to damage caused to council land during construction
- a final survey confirming levels or boundary positions
- compliance paperwork from the water authority or other bodies
- registration of a covenant or easement shown on the approval
Re-read the conditions a few weeks out from completion and tick each one off.
Safety items left unfinished
The building must be safe to live in on the day the OC issues. Missing balustrades, handrails on stairs, smoke alarms that are not connected, or a pool barrier that has not passed inspection will each stop the OC. These are often small jobs, but they are non-negotiable.
Paperwork that arrives late
Certifiers often need trade certificates to confirm work they cannot see, such as waterproofing or glazing. Our Occupation certificates: what you need before moving in lists the documents most often requested. Chasing them weeks after the trade has left frequently slows things down.
Staying ahead of the final sign-off
- Tell your certifier about any change from the plans as soon as it is proposed.
- Collect paperwork from each trade the day they finish.
- Do your own walk-through against the approval before you book the final inspection.
See our occupation certificate page for how we handle the final stage, and book your final inspection once everything is complete.
Local help across NSW
CertifiBuild certifies Class 1 and Class 10 work in 39 council areas. Local rules on these council pages are a good place to start: Wollondilly Shire Council, Blacktown City Council, Lithgow City Council, Campbelltown City Council, Central Coast Council, Wollongong City Council.
Suburb pages with local planning notes: Eagle Vale, Forresters Beach, Horsley, Ingleburn, Jamberoo, Luddenham, Marsden Park, Marsfield, South Bowenfels, The Oaks. You can also browse every service area.
Sources
- Development Certification & Fire Safety Regulation 2021, as made (legislation.nsw.gov.au)
- Role of certifiers explained, nsw.gov.au