Craggy Range chairman and owner Terry Peabody said the winery planned to progressively extend its Waimarama Rd estate from next year.
"This is a further endorsement of our family's long-term commitment to the Hawke's Bay region and the wine industry," he said.
The adjoining land had resource consents for the winery's intended activities.
"As we continue to expand our global markets, the Waimarama Rd estate and its associated visitor and hospitality programmes remains a key part in delivering the Craggy Range experience."
Hawke's Bay Winegrowers Association chairman Nicholas Buck said the purchase was good news and proof the industry had turned a corner.
"This is another sign that the more successful players in the industry are continuing to expand," he said.
Vendors Denis Thorner and Pamela Brockie have moved to another Havelock North address. Mr Thorner is managing director of Thorners, an Upper Hutt-based insurance and finance company.