Coopers Covention Centre is up for sale as part of the Mystery Creek Wines sale.

Mystery Creek Wines is up for sale, including an onsite convention centre and restaurant.

One of Waikato's two wineries is on the market as its owners head into retirement.

Garry and Vicki Major started Mystery Creek Wines 16 years ago, after planting a vineyard on a block of land they bought in 1987.

The Waikato couple took out a gold award for their chardonnay in the winery's first year, and daughter Sam Ward said from there "it just took off".

MARK HAMILTON Mystery Creek Wines, which includes Coopers Convention Centre, is up for sale.

Ward, now the general manager of Mystery Creek Wines, said the decision to sell was an emotional one.

"Blood, sweat and tears have gone into it for the last 20 years.

"Running a winery in the Waikato is tough, like in any region in New Zealand."

She said her parents were proud of how successful the winery had been, having picked up awards for its chardonnays, muscats and rieslings over the past 16 years.

It also took home Waikato's first gold award for a pinot noir at the New Zealand International Wine Show this year.

"He's [Garry Major] going out on a high; it's a good time," Ward said.

When the question of selling was raised, she considered staying on, but the job was too big for her to do on her own and her parents were ready to move on, she said.

"Mum and dad are very tired.

"Now is as good a time as any to give somebody else a go at their dream."

She had worked in the business her whole life, so the sale was "a big, very emotional change" and she would move onto something else career-wise.

Ward said she and her parents were thankful to all those who had supported Mystery Creek Wines over the years.

The winery, which included a restaurant and convention centre, was "a one-stop, ultimate package for somebody" to take up, she said.

Mystery Creek Wines is located on the outskirts of Hamilton, overlooking the Waikato River.

It was previously the home of award-winning restaurant, Woodbox, which was bought by Pumice Food Group in 2014 and converted into Angus Rd Eatery.

Angus Rd Eatery closed down in May this year, with the owners of the business citing tougher drink driving laws as the reason.

Pumice Food Group currently hold the lease for both the restaurant and Coopers Convention Centre. It covers 630 square metres and seats 125, while the restaurant can seat up to 80.

These are up for review in April next year.

The winery sits on 9.35 hectares of land, with 4ha planted out in grapes.

L J Hooker real estate agent Garry Webb said the property held three titles – one for the winery, one for the restaurant and convention centre, and one for a four-bedroom house which also sits on the property.

While the Majors would consider selling separately, he said the house would have to be part of the deal with one of the sales.

The winery includes two temperature-controlled barrel rooms and a 2300 litre-per-hour boiling line. It also houses a cellar and tasting room.

Webb said the new owner would have plenty of room to grow the business, as the Majors had bottled "1000 tonnes of product" from their Marlborough vineyard at the Mystery Creek site.

"You could make beer there; you could convert it into whatever you want," he said.

"The capacity of the winery is a lot bigger than [the vineyard]."