Plans to "future proof" the stadium had been released and the stadium owners and management were working as fast as they could to rebuild it, Stadium Southland general manager Nigel Skelt said.
The stadium's roof collapsed on September 18 last year after a heavy snowfall.
Over the years, booking for entertainment and conferences had become a major part of the stadium's income, Mr Skelt said.
The new structure would be "bigger and higher" than the old one, with twice as much steel.
Piling would go 15m into the ground, with piles 1m apart, he said.
"It'll be a different structure and roof line."
Phase one of the project, re-establishing the courts, would be funded by $13.2 million from the stadium's insurers plus $750,000 from the Southland Indoor Leisure Centre Charitable Trust.
There were plans to increase the seating capacity to give people a choice of seats, as well as decisions to be made about the court surfaces.
"It'll be bigger and better using more technology than before."
Phase two of the plans was to renovate the existing administration block left standing after the snowfall, but further community funding would be needed for that, he said.
The block includes the foyer, squash courts and toilets. Money was also required for a retractable grandstand at the south end of the main courts.
"We want to future proof it for the next 25 years and we have the opportunity to do that."
It was hoped piling could begin in about three weeks and that the main contractor would be on site by the end of March, he said.
