She said homelessness in Palmerston North was at about 500.
"We should never tolerate homelessness in a country as prosperous as ours."
Later she was asked if that would include housing for refugees - Palmerston North is one of the hubs for refugee arrivals.
She said she expected they would be part of the numbers on waiting lists.
She ran through other policies, saying Labour would ban foreign buyers and close tax loopholes for speculators.
Ardern also told the the crowd one unexpected issue has resonated during the campaign - mental health.
She said mental health was critical for well-being and Labour would look at pay equity for mental health workers the government had left out of the recent settlement for care workers. The party would also ensure every school had a nurse, she said.