SaltyNZ: Friday is the final official election result. This includes a full recount of all the votes already counted on the day. Not sure what recourse candidates have to contest it in the event of a small winning margin - probably not a lot as that is the legal deadline for the GG to announce the new parliament.
Electorate candidates have to apply within three working days of the official results to a District Court Judge and pay a fee for a recount.