A single person earning under $120,000 or a couple under $180,000 can apply.
First-time buyers must live in the house for at least three years before reselling.
The trade show's KiwiBuild Summit inside the ASB showgrounds was completely packed out as Phil Twyford elaborated on the Government's ambitious goals.
"We're going to roll up our sleeves and build 100,000 affordable homes in 10 years," he said.
They'll cost up to $650,000 in Auckland and $500,000 nationwide.
"Are they going to look like crap?" asked Summit host Paddy Gower, expressing widely held fears of "army barracks" style housing littering the country.
"We're not building state homes or subsidised housing" replied the Minister.
"We're going to partner up with developers to produce middle-class aspirational homes that will be warm, dry and energy efficient."
He went on to say that KiwiBuild is essentially a procurement company of a massive volume and scale which will give it the opportunity to reduce construction costs and set new standards for better homes.
Currently, the Government is drafting legislation to speed up the building consent process by shifting the risk from Councils to builders and owners with proportional liability.
Additionally, it will allow the digital lodging of plans and a multi-proof building consent process - one design, many sites.
It also intends to reduce the price of land by opening urban boundaries: "We're going to build up and out in Auckland," declared Minister Twyford "and turn the tap on for infrastructure financing."
Confidence in KiwiBuild?
Projected on the screens above the KiwiBuild Summit stage was a live poll asking the audience if they had confidence that the Government will deliver on the KiwiBuild promise of 100,000 affordable homes in 10 years
The running tally at that point?
47% were confident, 48% not confident, 5% neutral.
Following the Housing Minster's presentation, there were various panel discussions with other Government representatives and industry leaders.
They probed the need for innovation in construction with Jenny Salesa, the Minister for Building & Construction confirming that KiwiBuild is considering proposals from around the world for prefabrication and modular systems that would work in New Zealand.
Industry leaders called on the Government to lead the way in making the construction industry greener and community focused.
"What's stopping KiwiBuild from making every house Green Star six," asked Jerome Partington, Sustainability Manager at architects Jasmax.
"We need to focus on creating whole communities in harmony with water ecology, energy and transport infrastructure for a sustainable future - that's where the real savings come in."
The head of KiwiBuild, Stephen Barclay, declared that they were currently working on new standards to which all tenders from developers must adhere.
One of the most pressing issues for KiwiBuild is Auckland's water infrastructure.
After 25 years of underfunding, coping with the huge growth is going to be really tricky.
However, Raveen Jaduram, the CEO of Watercare (the body responsible for Auckland's fresh and wastewater management), pledged to discount the $14,000 subdivision connection fee by 20% to houses that employ extensive water saving measures.
At the closing of the Summit, the poll referred to earlier declared 54% were confident that KiwiBuild would deliver while 27% were not confident.
The first 30 houses will be ready in October.