Far North District deputy mayor Tania McInnes, who was at the meeting, said the investment showed confidence in local growers' ability to produce.
"It's a massive boost to our local industry. It's a significant industry for us in the Far North," she said.
McInnes said the Far North was already well-known for producing kiwifruit, avocados and citrus, with Kerikeri being one of the highest producers of gold kiwifruit and Seeka was a reputable company.
Seeka chief executive Michael Franks said the investment showed commitment to Northland.
"We are here for the long term. This investment will provide world-class facilities in the heart of Northland," he said.
It gave Seeka a competitive edge, which could encourage new growers to use the company, Franks said.
Franks said Seeka continues to "positively look for expansion options" in Northland.
Development will begin this year with the building of a new packhouse and grading machinery, expected to be completed in time for the 2019 harvest.
Seeka will also upgrade its on-site information systems and build additional cool storage later next year, doubling its pre-cooling and cooling capacity.