Up to 220,000 paying visits were forecast annually in the project's feasibility study.
Drum said management was working with the tourism sector to drive New Zealanders to dip into their savings in the first few years of the facility's operation and visit the centre.
She said $967,800 in total annual ticket sales had been forecast prior to Covid-19. This income would likely fall significantly.
Drumm asked the council meeting for up to $292,173 in funding to support HAC-WMAG's financial health when it opened.
This would be used to supplement entry prices for Whangārei residents.
HAC-WMAG is run by Whangārei Art Museum Trust, a council-controlled organisation.
It will be part of the proposed Hatea Art precinct, Drumm said.
The building, which is now taking shape, will include Friedensreich Hundertwasser's (SUBS: correct) art and a contemporary Māori art gallery.
A small Hundertwasser building or folly had to built first and officially signed off by the Hundertwasser Foundation.
It's the world's last authentic building design by the late Austrian-born artist and architect. It is also the only art centre outside of Vienna to host his original art.
Hundertwasser lived in Northland's Bay of Islands after first visiting New Zealand in 1973.
He identified the 1923 former Whangārei Harbour Board building as his final legacy via a conversion - with the building's makeover now shaping as a New Zealand and international icon - but did not live to see the project come to fruition.
The original sketches and architectural ideas for what was to become his final building were recovered from Hundertwasser archives about eight years after he died in 2000.
The Hundertwasser Foundation in Vienna had to officially approve the Whangārei Town Basin project before it could proceed.
Hundertwasser's colourful abstract paintings and quirky architecture eschew traditional straight lines, shape and balance.
A sculpture by Kerikeri sculptor Chris Booth has just been confirmed as the first for a collection of sculptors' designs for the centre.
HAC-WMAG will have the southern hemisphere's largest rooftop garden. Two hundred native trees and nearly 4000 plants, many unique to Northland, will be used on the living roof. They include the Three Kings kaikomako(SUBS: correct), the world's rarest tree with just one remaining growing in the wild on the Three Kings Islands to the north of New Zealand.
The natives will be grown by a nursery at Matapōuri on the Tutukaka coast.
Visitors will be able to pick their own fruit from fruit trees also be planted in the rooftop garden.
