Hearings into Ngati Whatua's fight to increase ground rent on the first two properties in its 20ha of inner-city Auckland land are concluding.
But the iwi's boss said his organisation had tried to strike an accord with building owners on its sites.
Tiwana Tibble, chief executive of Ngati Whatua O Orakei Maori Trust Board, has said the iwi was not being unreasonable and had tried to broker deals to head off fights on the Quay Park land.
Arbitration started last Monday for sites occupied by GE Plaza in Tangihua St and BNZ in Mahuhu Cres.
"Our team met with all lessees. However we have been unwilling to lower our expectations so we have agreed to go to an independent arbitrator as required under the lease. We do not expect to go to arbitration with every single lessee, and have now focused on some key parties from separate precincts on the land.