Mahi doesn't even know who Friedensreich Hundertwasser was or the fact an art centre would be built in Whangarei in his memory.
"She saw a picture of the proposed Hundertwasser Art Centre in a newspaper and drew a matcher. It took her four days to draw it in school."
The Bach chairwoman Heather Carthew said Mahi's entry really stood out.
"We picked the winning picture from each age group and asked which child has a good sense of colour, element and drawing and, for her age, she really stood out."
Ms Carthew said Mahi's design was chosen by her teacher as one of two entries submitted to the competition.
"Students learned quite a bit about Hundertwasser as well ... elements he put into his paintings and his belief in the environment," she said.
"Hundertwasser art appeals to kids. Unlike (some) adults, they seem to get it."