Once Final Comletion is done and you have occupation, the follwoing would apply.
As per the NHBRC:
After Ocupation, 3 months to draw up your Snag List. I would recommend that you take your time, as you can only issue one comprihensive List.
Then as per the NHBRC the following applies.
5 Year structual Gaurentee.
2 Year Roof Gaurentee.
1 Year Roof Leak Gaurentee.
1 Year Plumbing Gaurentee - Sanitary and Brassware Excluded.
1 Year Electrical Installation Only Guarentee - Light Fittings, Bulps, Appliances Excluded.