That resulted in David Benham being brought in to independently investigate.
He decided after a preliminary assessment that the complaint warranted a full inquiry and he gave his results to the council after interviewing all relevant parties.
Cr Vandervis was eventually censured.
In 2020, he challenged the legitimacy of the process through judicial review in the High Court, which was dismissed.
The next year, he appealed that judgment in the Court of Appeal, which similarly knocked him back in a decision released in June.
Cr Vandervis sought leave to bring the case before the Supreme Court but that was declined in a four-page judgment released today.
He was ordered to pay costs of $2500 but that figure may be far greater given the earlier adverse results.
Before the Supreme Court decision, Dunedin City Council confirmed the entire episode had cost it more than $100,000: $14,148 for the initial investigation; $56,678 for the High Court case and $30,856 for the Court of Appeal.
The council previously confirmed a third party had paid the $12 ticket.
Cr Vandervis has been contacted for comment.