Labour says it will build 15,000 affordable homes over three years if elected in September.
It's all part of the party's wider plan to build 100,000 in the next decade, with 50 percent in Auckland.
Leader Andrew Little says after three years it'll ramp up significantly.
"That three-year period is also the time when you're adding to your workforce, you're building your workforce, you're getting a range of other things sorted out too."
He says the bulk of the figure will be in Auckland, but the programme is for all around the country.
Labour's KiwiBuild policy plans for standalone houses in Auckland to cost $500,000 to $600,000, with apartments and townhouses under $500,000.
In May, Labour housing spokesperson Phil Twyford revealed a Labour Government would be willing to buy private land in Auckland if it had to.
"We are going to work with the council, we are going to work with Ngāti Whātua, we are going to work with other investors, and if necessary we are going to buy private land to develop," he told The Nation.
"We've committed $2 billion to kick-start KiwiBuild and we're going to establish an affordable housing authority to act as an urban development agency."
It came after Social Housing Minister Amy Adams announced a plan for the Government to build 34,000 new homes in Auckland over the next 10 years as part of its Crown Building Project.
It'll mean 8300 run-down houses will be replaced with 34,000 homes.
Of those, 24,300 will be built by Housing New Zealand through their Auckland Housing Programme and will be a mix of apartments, houses and terraced housing.
Ms Adams says the project will deliver 13,500 newly built social housing and 20,600 affordable and market homes.
- Government plans to build 34,000 Auckland homes
- Affordable housing: Labour will buy private land - Twyford
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