"We are looking for four new children," said associate producer Paula McKinnon. "We are looking in Australia as well but we will be holding auditions in New Zealand in July."
McKinnon said no acting experience was necessary but the successful children would need a stage presence.
"They need talent and it certainly helps if they can sing and dance. We try to look for very natural children."
During downtime, the children would be schooled by a tutor.
A spectacular set makes the show, in Mary Poppins' speak, practically perfect.
Sixteen shipping containers will bring the elaborate set of 17 Cherry Tree Lane to New Zealand for the three-month season.
Lead actor Matt Lee who plays chimney sweep Bert - made famous by Dick Van Dyke - said the show about a dysfunctional family and their supercalifragilisticexpialido-cious nanny would strike a chord with most.
"I have never been in a show that has had such a warm response and the people most affected are the adults," said Lee.
"It is such a great story with a great message and it's one everyone can relate to."
There were new songs and characters in the stage show. One of the most entertaining was evil anti-nanny Miss Andrew - played by Natalie Gamsu, 51.
The nanny was the one actor not applauded at the end of the show.
"It is fun - until I have to go out and bow," said Gamsu. "It requires me to be very brave to go to the edge of my mean-ness, I try to scare the children every night."
Mary Poppins goes on sale June 21 at The Edge and Ticketmaster.
