Russian billionaire Alexander Abramov's Helena Bay mansion. Photo / Greg Bowker
"The assistance we have received from Helena Bay Holdings has made our job a lot easier, providing machinery, advice about how we clean up the site and also with our future projects," Mr Stone said at a meeting in the former Helena Bay farmhouse, now staff accommodation and office.
"We've just completed the planning but it hasn't been cheap."
Help drafting tender documents was invaluable in preparing paperwork so suppliers could bid for the work and the board could seek the best bid, he said.
Ngatiwai Trust Board chairman Hayden Edmonds said Helena Bay's help had been invaluable.
Helena Bay Holdings managing director Christopher Seel said no questions were asked when he realised Ngatiwai needed expertise in terms of equipment and skills from his big building site where a number of tower cranes were working for months.
"We were glad to help. The key thing was getting it all cleaned up so it wasn't a constant reminder of the negative and allowing everyone to focus on the future and the new wharenui and wharekai which was a shell. There is now a plan for completion," he said.
Mr Seel said work was under way to prepare to run Helena Bay as a luxury lodge and every effort was being made to include staff of Ngatiwai iwi descent.
Reports two years ago said the fire was believed to have been started by children aged 3 and 6 playing with a lighter. The blaze caused several hundred thousand dollars worth of damage, but no loss of life.