Villa Maria, which recently announced plans for a multi-million dollar winery beside its Gimblett Gravels Te Awa Winery, has bought 41 ha from nearby Pask Winery.
The property contains bare land and vineyard - a vineyard that in the past supplied grapes to Villa Maria that were surplus to Pask's needs.
Villa Maria owner and founder Sir George Fistonich said opportunities to buy Gimblett Gravels land were very rare.
"There is fierce competition to purchase more vineyards in this very limited premium wine area," he said.
"We're seeing strong growth in demand for red wines particularly in Asia, so securing our grape supply is crucial to meeting our customer requirements. The Gimblett Gravels is a very unique area renowned for making some of the country's best wines."