There are a couple of options.You can order a Birth Certificate from the New Zealand Government. It costs $26.50 to get a copy sent to you, or $39.80 for a pack with a standard and a decorative birth certificate.
 

To apply for a New Zealand Passport, you can apply on online by going to the New Zealand Government website.

For an adult passport it costs:

  • $180 for a standard passport (processed in up to 10 working days)
  • $360 for an urgent passport (processed in up to 3 working days)