Liquorland has bought 20 stores from rival The Mill in a sale completed today.
The deal was signalled in September, when Liquorland indicated it wanted to purchase the stores.
Liquorland, operated by New World and Pak'n Save owner Foodstuffs, will have 108 stores following the purchase.
Fourteen of The Mill stores are in the North Island and six are in the South Island.
Foodstuffs managing director Steven Anderson said the group was was "delighted" to bring these 20 stores into the Liquorland business.
"It is a win for both the business and our customers," Anderson said.
"Each store will transition to the successful owner-operated, franchisee model that is in place throughout the Liquorland network.