Those numbers were valued slightly more highly than the number four, which is considered unlucky in the culture.
Property Brokers regional manager Paul Whitaker said number two might have been more valuable because of its location.
"Probably it's on a corner so it's got more land around the house."
He said it would be more common in Auckland for Chinese buyers to shy away from particular letterbox numbers.
"I haven't seen it in my 18,19 years."
Homes.co.nz spokesman Jeremy O'Hanlon said the idea that a number on a letterbox could impact values was a little absurd, however number 13 seemed to drive down values in certain regions.
"It's funny that Whangarei seems to buck the trend and value 13 higher than all but the number 12.
While the Bay of Plenty and Hawke's Bay seem to have a real distaste for it".
"Perhaps it's worth hunting for the number 13 in your property search to grab a bargain."