Available two- and three-bedroom apartments range in size from 62sq m through to 111sq m. The layout has 10 apartments on each floor, plus two penthouses on the top level.
Annabel is in charge of the marketing and brothers David and Mike are project directors.
"The location is great; it's on the city fringe, and close to the city's amenities," says David. There is good access to the motorway, and being in a tree-lined street was a big selling point for us."
Inside, the units have 2.7m high ceilings with attractive interiors designed by another Mahoney sibling, Josephine Love.
The Tawera Group views this apartment conversion as its flagship project for future development in Auckland.
"It's not so much about just this one project but about the way the council is heading in the CBD to encourage inner-city living," says David. "This is a vital part of the future of Auckland, especially if it wants to be the one of the most livable cities.
"We're actually looking for another project and we have our eyes on a few buildings, mostly for conversions."
What has surprised the family is the diversity of interest in the Vincent St apartments ... first-home buyers, families, empty nesters, investors and also strong interest from Asian buyers.
With 53 of the 62 apartments sold, Annabel may have to wait until her family's next project to buy. "I'm seriously thinking about apartment living instead of a house," she says. "I think it is the best way to get into the property market."