The trust obtained a report from the council that confirmed none of the baches was legal and they did not have building consents.
Max Connelly said at a hearing that the father of a current trustee gave his blessing for him to build a bach about 1985 but Judge Ambler said any permission granted to him could be revoked by the trust.
Another bach owner Carol Martin - whose family are not beneficial owners and have no ancestral connection to the land - relied on the fact that his family had been camping on the land and using their bach for many years.
Judge Ambler said the law was clear in that the trust, as an ahu whenua trust, had all the rights as legal owners of the land.
"Overall, I do not consider that an injunction would be oppressive as the occupiers built the baches as temporary holiday accommodation, without permission and in the knowledge that at some stage, they may be required to remove them," the judge said.
"The trust's approach has been reasonable throughout, and the fact that the trust is looking to provide camping facilities for its beneficial owners and their whanau is clear evidence of that."
Judge Ambler has ordered non-owners to remove their baches before March 1next year and beneficial owners to do the same by April 1, 2013.