About a decade ago, New Zealanders hardly gave Halloween (Happy Birthday, Peter Jackson!) a thought. Nowadays, a few kids dress up and trot along with their parents to see Gran and get some lollies (sweeties, candy, depends on which other country you come from). But folk just do not decorate their houses or grounds.
However, for the last couple of years there's been a house in Miramar that has dolled up their fences on Halloween. It's become known by neighbourhood kids as 'The Halloween House". They love going there. The house is owned, I believe, by someone who works for Weta. There are lots of Americans working at Weta.