Also, there's a new site, http://www.yourmortgage.co.nz which is building up a comprehensive list of mortgage brokers for New Zealand (some listed already) and has calculators and loan comparisons specific for the NZ market.
Would you please add my new property website to your list. The website carries the same name as my user name. You will probably need to start a new category (perhaps called 'Commercial and Residential Rental Properties') because the site is New Zealand's only website that focuses solely on listings for commercial lease premises residential properties for rent. I cannot yet place a URL. Many thanks.